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mariadb/storage/innobase/handler/handler0alter.cc
Oleksandr Byelkin a8d4642375 Merge branch '10.11' into 11.4
2025-04-26 10:53:02 +02:00

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/*****************************************************************************
Copyright (c) 2005, 2019, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2013, 2023, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file handler/handler0alter.cc
Smart ALTER TABLE
*******************************************************/
/* Include necessary SQL headers */
#include "univ.i"
#include <debug_sync.h>
#include <log.h>
#include <sql_lex.h>
#include <sql_class.h>
#include <sql_table.h>
#include <mysql/plugin.h>
#include <strfunc.h>
/* Include necessary InnoDB headers */
#include "btr0sea.h"
#include "dict0crea.h"
#include "dict0dict.h"
#include "dict0load.h"
#include "dict0stats.h"
#include "dict0stats_bg.h"
#include "log0log.h"
#include "rem0types.h"
#include "row0log.h"
#include "row0merge.h"
#include "row0ins.h"
#include "row0row.h"
#include "row0upd.h"
#include "trx0trx.h"
#include "trx0purge.h"
#include "handler0alter.h"
#include "srv0mon.h"
#include "srv0srv.h"
#include "fts0priv.h"
#include "fts0plugin.h"
#include "pars0pars.h"
#include "row0sel.h"
#include "ha_innodb.h"
#include "ut0stage.h"
#include <thread>
#include <sstream>
/** File format constraint for ALTER TABLE */
extern ulong innodb_instant_alter_column_allowed;
static const char *MSG_UNSUPPORTED_ALTER_ONLINE_ON_VIRTUAL_COLUMN=
"INPLACE ADD or DROP of virtual columns cannot be "
"combined with other ALTER TABLE actions";
/** Operations for creating secondary indexes (no rebuild needed) */
static const alter_table_operations INNOBASE_ONLINE_CREATE
= ALTER_ADD_NON_UNIQUE_NON_PRIM_INDEX
| ALTER_ADD_UNIQUE_INDEX;
/** Operations that require filling in default values for columns */
static const alter_table_operations INNOBASE_DEFAULTS
= ALTER_COLUMN_NOT_NULLABLE
| ALTER_ADD_STORED_BASE_COLUMN;
/** Operations that require knowledge about row_start, row_end values */
static const alter_table_operations INNOBASE_ALTER_VERSIONED_REBUILD
= ALTER_ADD_SYSTEM_VERSIONING
| ALTER_DROP_SYSTEM_VERSIONING;
/** Operations for rebuilding a table in place */
static const alter_table_operations INNOBASE_ALTER_REBUILD
= ALTER_ADD_PK_INDEX
| ALTER_DROP_PK_INDEX
| ALTER_OPTIONS
/* ALTER_OPTIONS needs to check alter_options_need_rebuild() */
| ALTER_COLUMN_NULLABLE
| INNOBASE_DEFAULTS
| ALTER_STORED_COLUMN_ORDER
| ALTER_DROP_STORED_COLUMN
| ALTER_RECREATE_TABLE
/*
| ALTER_STORED_COLUMN_TYPE
*/
| INNOBASE_ALTER_VERSIONED_REBUILD
;
/** Operations that require changes to data */
static const alter_table_operations INNOBASE_ALTER_DATA
= INNOBASE_ONLINE_CREATE | INNOBASE_ALTER_REBUILD;
/** Operations for altering a table that InnoDB does not care about */
static const alter_table_operations INNOBASE_INPLACE_IGNORE
= ALTER_COLUMN_DEFAULT
| ALTER_PARTITIONED
| ALTER_COLUMN_COLUMN_FORMAT
| ALTER_COLUMN_STORAGE_TYPE
| ALTER_CONVERT_TO
| ALTER_VIRTUAL_GCOL_EXPR
| ALTER_DROP_CHECK_CONSTRAINT
| ALTER_RENAME
| ALTER_INDEX_ORDER
| ALTER_COLUMN_INDEX_LENGTH
| ALTER_CHANGE_INDEX_COMMENT
| ALTER_INDEX_IGNORABILITY;
/** Operations on foreign key definitions (changing the schema only) */
static const alter_table_operations INNOBASE_FOREIGN_OPERATIONS
= ALTER_DROP_FOREIGN_KEY
| ALTER_ADD_FOREIGN_KEY;
/** Operations that InnoDB cares about and can perform without creating data */
static const alter_table_operations INNOBASE_ALTER_NOCREATE
= ALTER_DROP_NON_UNIQUE_NON_PRIM_INDEX
| ALTER_DROP_UNIQUE_INDEX;
/** Operations that InnoDB cares about and can perform without validation */
static const alter_table_operations INNOBASE_ALTER_NOVALIDATE
= INNOBASE_ALTER_NOCREATE
| ALTER_VIRTUAL_COLUMN_ORDER
| ALTER_COLUMN_NAME
| INNOBASE_FOREIGN_OPERATIONS
| ALTER_COLUMN_UNVERSIONED
| ALTER_DROP_VIRTUAL_COLUMN;
/** Operations that InnoDB cares about and can perform without rebuild */
static const alter_table_operations INNOBASE_ALTER_NOREBUILD
= INNOBASE_ONLINE_CREATE
| INNOBASE_ALTER_NOCREATE;
/** Operations that can be performed instantly, without inplace_alter_table() */
static const alter_table_operations INNOBASE_ALTER_INSTANT
= ALTER_VIRTUAL_COLUMN_ORDER
| ALTER_COLUMN_NAME
| ALTER_ADD_VIRTUAL_COLUMN
| INNOBASE_FOREIGN_OPERATIONS
| ALTER_COLUMN_TYPE_CHANGE_BY_ENGINE
| ALTER_COLUMN_UNVERSIONED
| ALTER_RENAME_INDEX
| ALTER_DROP_VIRTUAL_COLUMN;
/** Initialize instant->field_map.
@param[in] table table definition to copy from */
inline void dict_table_t::init_instant(const dict_table_t& table)
{
const dict_index_t& oindex __attribute__((unused))= *table.indexes.start;
dict_index_t& index = *indexes.start;
const unsigned u = index.first_user_field();
DBUG_ASSERT(u == oindex.first_user_field());
DBUG_ASSERT(index.n_fields >= oindex.n_fields);
field_map_element_t* field_map_it = static_cast<field_map_element_t*>(
mem_heap_zalloc(heap, (index.n_fields - u)
* sizeof *field_map_it));
instant->field_map = field_map_it;
ut_d(unsigned n_drop = 0);
ut_d(unsigned n_nullable = 0);
for (unsigned i = u; i < index.n_fields; i++) {
auto& f = index.fields[i];
ut_d(n_nullable += f.col->is_nullable());
if (!f.col->is_dropped()) {
(*field_map_it++).set_ind(f.col->ind);
continue;
}
auto fixed_len = dict_col_get_fixed_size(
f.col, not_redundant());
/* Long fixed length can be treated as variable
length fields that needs external storage */
if (fixed_len > DICT_MAX_FIXED_COL_LEN) {
fixed_len = 0;
}
field_map_it->set_dropped();
if (!f.col->is_nullable()) {
field_map_it->set_not_null();
}
field_map_it->set_ind(fixed_len
? uint16_t(fixed_len + 1)
: DATA_BIG_COL(f.col));
field_map_it++;
ut_ad(f.col >= table.instant->dropped);
ut_ad(f.col < table.instant->dropped
+ table.instant->n_dropped);
ut_d(n_drop++);
size_t d = f.col - table.instant->dropped;
ut_ad(f.col == &table.instant->dropped[d]);
ut_ad(d <= instant->n_dropped);
f.col = &instant->dropped[d];
}
ut_ad(n_drop == n_dropped());
ut_ad(field_map_it == &instant->field_map[index.n_fields - u]);
ut_ad(index.n_nullable == n_nullable);
}
/** Set is_instant() before instant_column().
@param[in] old previous table definition
@param[in] col_map map from old.cols[] and old.v_cols[] to this
@param[out] first_alter_pos 0, or 1 + first changed column position */
inline void dict_table_t::prepare_instant(const dict_table_t& old,
const ulint* col_map,
unsigned& first_alter_pos)
{
DBUG_ASSERT(!is_instant());
DBUG_ASSERT(n_dropped() == 0);
DBUG_ASSERT(old.n_cols == old.n_def);
DBUG_ASSERT(n_cols == n_def);
DBUG_ASSERT(old.supports_instant());
DBUG_ASSERT(not_redundant() == old.not_redundant());
DBUG_ASSERT(DICT_TF_HAS_ATOMIC_BLOBS(flags)
== DICT_TF_HAS_ATOMIC_BLOBS(old.flags));
DBUG_ASSERT(!persistent_autoinc
|| persistent_autoinc == old.persistent_autoinc);
/* supports_instant() does not necessarily hold here,
in case ROW_FORMAT=COMPRESSED according to the
MariaDB data dictionary, and ALTER_OPTIONS was not set.
If that is the case, the instant ALTER TABLE would keep
the InnoDB table in its current format. */
dict_index_t& oindex = *old.indexes.start;
dict_index_t& index = *indexes.start;
first_alter_pos = 0;
for (unsigned i = 0; i + DATA_N_SYS_COLS < old.n_cols; i++) {
if (col_map[i] != i) {
first_alter_pos = 1 + i;
goto add_metadata;
}
}
if (!old.instant) {
/* Columns were not dropped or reordered.
Therefore columns must have been added at the end,
or modified instantly in place. */
DBUG_ASSERT(index.n_fields >= oindex.n_fields);
DBUG_ASSERT(index.n_fields > oindex.n_fields
|| !not_redundant());
#ifdef UNIV_DEBUG
if (index.n_fields == oindex.n_fields) {
ut_ad(!not_redundant());
for (unsigned i = index.n_fields; i--; ) {
ut_ad(index.fields[i].col->same_format(
*oindex.fields[i].col));
}
}
#endif
set_core_fields:
index.n_core_fields = oindex.n_core_fields;
index.n_core_null_bytes = oindex.n_core_null_bytes;
} else {
add_metadata:
const unsigned n_old_drop = old.n_dropped();
unsigned n_drop = n_old_drop;
for (unsigned i = old.n_cols; i--; ) {
if (col_map[i] == ULINT_UNDEFINED) {
DBUG_ASSERT(i + DATA_N_SYS_COLS
< uint(old.n_cols));
n_drop++;
}
}
instant = new (mem_heap_alloc(heap, sizeof(dict_instant_t)))
dict_instant_t();
instant->n_dropped = n_drop;
if (n_drop) {
instant->dropped
= static_cast<dict_col_t*>(
mem_heap_alloc(heap, n_drop
* sizeof(dict_col_t)));
if (n_old_drop) {
memcpy(instant->dropped, old.instant->dropped,
n_old_drop * sizeof(dict_col_t));
}
} else {
instant->dropped = NULL;
}
for (unsigned i = 0, d = n_old_drop; i < old.n_cols; i++) {
if (col_map[i] == ULINT_UNDEFINED) {
(new (&instant->dropped[d++])
dict_col_t(old.cols[i]))->set_dropped();
}
}
#ifndef DBUG_OFF
for (unsigned i = 0; i < n_drop; i++) {
DBUG_ASSERT(instant->dropped[i].is_dropped());
}
#endif
const unsigned n_fields = index.n_fields + n_dropped();
DBUG_ASSERT(n_fields >= oindex.n_fields);
dict_field_t* fields = static_cast<dict_field_t*>(
mem_heap_zalloc(heap, n_fields * sizeof *fields));
unsigned i = 0, j = 0, n_nullable = 0;
ut_d(uint core_null = 0);
for (; i < oindex.n_fields; i++) {
DBUG_ASSERT(j <= i);
dict_field_t&f = fields[i] = oindex.fields[i];
if (f.col->is_dropped()) {
/* The column has been instantly
dropped earlier. */
DBUG_ASSERT(f.col >= old.instant->dropped);
{
size_t d = f.col
- old.instant->dropped;
DBUG_ASSERT(d < n_old_drop);
DBUG_ASSERT(&old.instant->dropped[d]
== f.col);
DBUG_ASSERT(!f.name);
f.col = instant->dropped + d;
}
if (f.col->is_nullable()) {
found_nullable:
n_nullable++;
ut_d(core_null
+= i < oindex.n_core_fields);
}
continue;
}
const ulint col_ind = col_map[f.col->ind];
if (col_ind != ULINT_UNDEFINED) {
if (index.fields[j].col->ind != col_ind) {
/* The fields for instantly
added columns must be placed
last in the clustered index.
Keep pre-existing fields in
the same position. */
uint k;
for (k = j + 1; k < index.n_fields;
k++) {
if (index.fields[k].col->ind
== col_ind) {
goto found_j;
}
}
DBUG_ASSERT("no such col" == 0);
found_j:
std::swap(index.fields[j],
index.fields[k]);
}
DBUG_ASSERT(index.fields[j].col->ind
== col_ind);
fields[i] = index.fields[j++];
DBUG_ASSERT(!fields[i].col->is_dropped());
DBUG_ASSERT(fields[i].name
== fields[i].col->name(*this));
if (fields[i].col->is_nullable()) {
goto found_nullable;
}
continue;
}
/* This column is being dropped. */
unsigned d = n_old_drop;
for (unsigned c = 0; c < f.col->ind; c++) {
d += col_map[c] == ULINT_UNDEFINED;
}
DBUG_ASSERT(d < n_drop);
f.col = &instant->dropped[d];
f.name = NULL;
if (f.col->is_nullable()) {
goto found_nullable;
}
}
/* Discard tablespace doesn't remove the instantness
from the table definition. if n_core_null_bytes wasn't
initialized then assign it based on nullable fields */
if (!oindex.table->space
&& oindex.n_core_null_bytes
== dict_index_t::NO_CORE_NULL_BYTES) {
oindex.n_core_null_bytes = static_cast<uint8_t>(
UT_BITS_IN_BYTES(unsigned(oindex.n_nullable)));
}
/* The n_core_null_bytes only matters for
ROW_FORMAT=COMPACT and ROW_FORMAT=DYNAMIC tables. */
ut_ad(UT_BITS_IN_BYTES(core_null) == oindex.n_core_null_bytes
|| !not_redundant());
DBUG_ASSERT(i >= oindex.n_core_fields);
DBUG_ASSERT(j <= i);
DBUG_ASSERT(n_fields - (i - j) == index.n_fields);
std::sort(index.fields + j, index.fields + index.n_fields,
[](const dict_field_t& a, const dict_field_t& b)
{ return a.col->ind < b.col->ind; });
for (; i < n_fields; i++) {
fields[i] = index.fields[j++];
n_nullable += fields[i].col->is_nullable();
DBUG_ASSERT(!fields[i].col->is_dropped());
DBUG_ASSERT(fields[i].name
== fields[i].col->name(*this));
}
DBUG_ASSERT(j == index.n_fields);
index.n_fields = index.n_def = n_fields
& dict_index_t::MAX_N_FIELDS;
index.fields = fields;
DBUG_ASSERT(n_nullable >= index.n_nullable);
DBUG_ASSERT(n_nullable >= oindex.n_nullable);
index.n_nullable = n_nullable & dict_index_t::MAX_N_FIELDS;
goto set_core_fields;
}
DBUG_ASSERT(n_cols + n_dropped() >= old.n_cols + old.n_dropped());
DBUG_ASSERT(n_dropped() >= old.n_dropped());
DBUG_ASSERT(index.n_core_fields == oindex.n_core_fields);
DBUG_ASSERT(index.n_core_null_bytes == oindex.n_core_null_bytes);
}
/** Adjust index metadata for instant ADD/DROP/reorder COLUMN.
@param[in] clustered index definition after instant ALTER TABLE */
inline void dict_index_t::instant_add_field(const dict_index_t& instant)
{
DBUG_ASSERT(is_primary());
DBUG_ASSERT(instant.is_primary());
DBUG_ASSERT(!has_virtual());
DBUG_ASSERT(!instant.has_virtual());
DBUG_ASSERT(instant.n_core_fields <= instant.n_fields);
DBUG_ASSERT(n_def == n_fields);
DBUG_ASSERT(instant.n_def == instant.n_fields);
DBUG_ASSERT(type == instant.type);
DBUG_ASSERT(trx_id_offset == instant.trx_id_offset);
DBUG_ASSERT(n_user_defined_cols == instant.n_user_defined_cols);
DBUG_ASSERT(n_uniq == instant.n_uniq);
DBUG_ASSERT(instant.n_fields >= n_fields);
DBUG_ASSERT(instant.n_nullable >= n_nullable);
DBUG_ASSERT(instant.n_core_fields == n_core_fields);
DBUG_ASSERT(instant.n_core_null_bytes == n_core_null_bytes);
/* instant will have all fields (including ones for columns
that have been or are being instantly dropped) in the same position
as this index. Fields for any added columns are appended at the end. */
#ifndef DBUG_OFF
for (unsigned i = 0; i < n_fields; i++) {
DBUG_ASSERT(fields[i].same(instant.fields[i]));
DBUG_ASSERT(instant.fields[i].col->same_format(*fields[i]
.col));
/* Instant conversion from NULL to NOT NULL is not allowed. */
DBUG_ASSERT(!fields[i].col->is_nullable()
|| instant.fields[i].col->is_nullable());
DBUG_ASSERT(fields[i].col->is_nullable()
== instant.fields[i].col->is_nullable()
|| !table->not_redundant());
}
#endif
n_fields = instant.n_fields;
n_def = instant.n_def;
n_nullable = instant.n_nullable;
fields = static_cast<dict_field_t*>(
mem_heap_dup(heap, instant.fields, n_fields * sizeof *fields));
ut_d(unsigned n_null = 0);
ut_d(unsigned n_dropped = 0);
for (unsigned i = 0; i < n_fields; i++) {
const dict_col_t* icol = instant.fields[i].col;
dict_field_t& f = fields[i];
ut_d(n_null += icol->is_nullable());
DBUG_ASSERT(!icol->is_virtual());
if (icol->is_dropped()) {
ut_d(n_dropped++);
f.col->set_dropped();
f.name = NULL;
} else {
f.col = &table->cols[icol - instant.table->cols];
f.name = f.col->name(*table);
}
}
ut_ad(n_null == n_nullable);
ut_ad(n_dropped == instant.table->n_dropped());
}
/** Adjust table metadata for instant ADD/DROP/reorder COLUMN.
@param[in] table altered table (with dropped columns)
@param[in] col_map mapping from cols[] and v_cols[] to table
@return whether the metadata record must be updated */
inline bool dict_table_t::instant_column(const dict_table_t& table,
const ulint* col_map)
{
DBUG_ASSERT(!table.cached);
DBUG_ASSERT(table.n_def == table.n_cols);
DBUG_ASSERT(table.n_t_def == table.n_t_cols);
DBUG_ASSERT(n_def == n_cols);
DBUG_ASSERT(n_t_def == n_t_cols);
DBUG_ASSERT(n_v_def == n_v_cols);
DBUG_ASSERT(table.n_v_def == table.n_v_cols);
DBUG_ASSERT(table.n_cols + table.n_dropped() >= n_cols + n_dropped());
DBUG_ASSERT(!table.persistent_autoinc
|| persistent_autoinc == table.persistent_autoinc);
ut_ad(dict_sys.locked());
{
const char* end = table.col_names;
for (unsigned i = table.n_cols; i--; ) end += strlen(end) + 1;
col_names = static_cast<char*>(
mem_heap_dup(heap, table.col_names,
ulint(end - table.col_names)));
}
const dict_col_t* const old_cols = cols;
cols = static_cast<dict_col_t*>(mem_heap_dup(heap, table.cols,
table.n_cols
* sizeof *cols));
/* Preserve the default values of previously instantly added
columns, or copy the new default values to this->heap. */
for (uint16_t i = 0; i < table.n_cols; i++) {
dict_col_t& c = cols[i];
if (const dict_col_t* o = find(old_cols, col_map, n_cols, i)) {
c.def_val = o->def_val;
DBUG_ASSERT(!((c.prtype ^ o->prtype)
& ~(DATA_NOT_NULL | DATA_VERSIONED
| CHAR_COLL_MASK << 16
| DATA_LONG_TRUE_VARCHAR)));
DBUG_ASSERT(c.same_type(*o));
DBUG_ASSERT(c.len >= o->len);
if (o->vers_sys_start()) {
ut_ad(o->ind == vers_start);
vers_start = i & dict_index_t::MAX_N_FIELDS;
} else if (o->vers_sys_end()) {
ut_ad(o->ind == vers_end);
vers_end = i & dict_index_t::MAX_N_FIELDS;
}
continue;
}
DBUG_ASSERT(c.is_added());
if (c.def_val.len <= UNIV_PAGE_SIZE_MAX
&& (!c.def_val.len
|| !memcmp(c.def_val.data, field_ref_zero,
c.def_val.len))) {
c.def_val.data = field_ref_zero;
} else if (const void*& d = c.def_val.data) {
d = mem_heap_dup(heap, d, c.def_val.len);
} else {
DBUG_ASSERT(c.def_val.len == UNIV_SQL_NULL);
}
}
n_t_def = (n_t_def + (table.n_cols - n_cols))
& dict_index_t::MAX_N_FIELDS;
n_t_cols = (n_t_cols + (table.n_cols - n_cols))
& dict_index_t::MAX_N_FIELDS;
n_def = table.n_cols;
const dict_v_col_t* const old_v_cols = v_cols;
if (const char* end = table.v_col_names) {
for (unsigned i = table.n_v_cols; i--; ) {
end += strlen(end) + 1;
}
v_col_names = static_cast<char*>(
mem_heap_dup(heap, table.v_col_names,
ulint(end - table.v_col_names)));
v_cols = static_cast<dict_v_col_t*>(
mem_heap_alloc(heap, table.n_v_cols * sizeof(*v_cols)));
for (ulint i = table.n_v_cols; i--; ) {
new (&v_cols[i]) dict_v_col_t(table.v_cols[i]);
v_cols[i].v_indexes.clear();
}
} else {
ut_ad(table.n_v_cols == 0);
v_col_names = NULL;
v_cols = NULL;
}
n_t_def = (n_t_def + (table.n_v_cols - n_v_cols))
& dict_index_t::MAX_N_FIELDS;
n_t_cols = (n_t_cols + (table.n_v_cols - n_v_cols))
& dict_index_t::MAX_N_FIELDS;
n_v_def = table.n_v_cols;
for (unsigned i = 0; i < n_v_def; i++) {
dict_v_col_t& v = v_cols[i];
DBUG_ASSERT(v.v_indexes.empty());
v.base_col = static_cast<dict_col_t**>(
mem_heap_dup(heap, v.base_col,
v.num_base * sizeof *v.base_col));
for (ulint n = v.num_base; n--; ) {
dict_col_t*& base = v.base_col[n];
if (base->is_virtual()) {
} else if (base >= table.cols
&& base < table.cols + table.n_cols) {
/* The base column was instantly added. */
size_t c = base - table.cols;
DBUG_ASSERT(base == &table.cols[c]);
base = &cols[c];
} else {
DBUG_ASSERT(base >= old_cols);
size_t c = base - old_cols;
DBUG_ASSERT(c + DATA_N_SYS_COLS < n_cols);
DBUG_ASSERT(base == &old_cols[c]);
DBUG_ASSERT(col_map[c] + DATA_N_SYS_COLS
< n_cols);
base = &cols[col_map[c]];
}
}
}
dict_index_t* index = dict_table_get_first_index(this);
if (instant) {
instant->field_map= static_cast<field_map_element_t*>(
mem_heap_dup(heap, instant->field_map,
(index->n_fields -
index->first_user_field()) *
sizeof *instant->field_map));
instant= static_cast<dict_instant_t*>(
mem_heap_dup(heap, instant, sizeof *instant));
}
bool metadata_changed;
{
const dict_index_t& i = *dict_table_get_first_index(&table);
metadata_changed = i.n_fields > index->n_fields;
ut_ad(i.n_fields >= index->n_fields);
index->instant_add_field(i);
}
if (instant || table.instant) {
const auto old_instant = instant;
/* FIXME: add instant->heap, and transfer ownership here */
if (!instant) {
instant = new (mem_heap_zalloc(heap, sizeof *instant))
dict_instant_t();
goto dup_dropped;
} else if (n_dropped() < table.n_dropped()) {
dup_dropped:
instant->dropped = static_cast<dict_col_t*>(
mem_heap_dup(heap, table.instant->dropped,
table.instant->n_dropped
* sizeof *instant->dropped));
instant->n_dropped = table.instant->n_dropped;
} else if (table.instant->n_dropped) {
memcpy(instant->dropped, table.instant->dropped,
table.instant->n_dropped
* sizeof *instant->dropped);
}
const field_map_element_t* field_map = old_instant
? old_instant->field_map : NULL;
init_instant(table);
if (!metadata_changed) {
metadata_changed = !field_map
|| memcmp(field_map,
instant->field_map,
(index->n_fields
- index->first_user_field())
* sizeof *field_map);
}
}
while ((index = dict_table_get_next_index(index)) != NULL) {
if (index->to_be_dropped) {
continue;
}
for (unsigned i = 0; i < index->n_fields; i++) {
dict_field_t& f = index->fields[i];
if (f.col >= table.cols
&& f.col < table.cols + table.n_cols) {
/* This is an instantly added column
in a newly added index. */
DBUG_ASSERT(!f.col->is_virtual());
size_t c = f.col - table.cols;
DBUG_ASSERT(f.col == &table.cols[c]);
f.col = &cols[c];
} else if (f.col >= &table.v_cols->m_col
&& f.col < &table.v_cols[n_v_cols].m_col) {
/* This is an instantly added virtual column
in a newly added index. */
DBUG_ASSERT(f.col->is_virtual());
size_t c = reinterpret_cast<dict_v_col_t*>(
f.col) - table.v_cols;
DBUG_ASSERT(f.col == &table.v_cols[c].m_col);
f.col = &v_cols[c].m_col;
} else if (f.col < old_cols
|| f.col >= old_cols + n_cols) {
DBUG_ASSERT(f.col->is_virtual());
f.col = &v_cols[col_map[
reinterpret_cast<dict_v_col_t*>(
f.col)
- old_v_cols + n_cols]].m_col;
} else {
f.col = &cols[col_map[f.col - old_cols]];
DBUG_ASSERT(!f.col->is_virtual());
}
f.name = f.col->name(*this);
if (f.col->is_virtual()) {
dict_v_col_t* v_col = reinterpret_cast
<dict_v_col_t*>(f.col);
v_col->v_indexes.push_front(
dict_v_idx_t(index, i));
}
}
}
n_cols = table.n_cols;
n_v_cols = table.n_v_cols;
return metadata_changed;
}
/** Find the old column number for the given new column position.
@param[in] col_map column map from old column to new column
@param[in] pos new column position
@param[in] n number of columns present in the column map
@return old column position for the given new column position. */
static ulint find_old_col_no(const ulint* col_map, ulint pos, ulint n)
{
do {
ut_ad(n);
} while (col_map[--n] != pos);
return n;
}
/** Roll back instant_column().
@param[in] old_n_cols original n_cols
@param[in] old_cols original cols
@param[in] old_col_names original col_names
@param[in] old_instant original instant structure
@param[in] old_fields original fields
@param[in] old_n_fields original number of fields
@param[in] old_n_core_fields original number of core fields
@param[in] old_n_v_cols original n_v_cols
@param[in] old_v_cols original v_cols
@param[in] old_v_col_names original v_col_names
@param[in] col_map column map */
inline void dict_table_t::rollback_instant(
unsigned old_n_cols,
dict_col_t* old_cols,
const char* old_col_names,
dict_instant_t* old_instant,
dict_field_t* old_fields,
unsigned old_n_fields,
unsigned old_n_core_fields,
unsigned old_n_v_cols,
dict_v_col_t* old_v_cols,
const char* old_v_col_names,
const ulint* col_map)
{
ut_ad(dict_sys.locked());
if (cols == old_cols) {
/* Alter fails before instant operation happens.
So there is no need to do rollback instant operation */
return;
}
dict_index_t* index = indexes.start;
/* index->is_instant() does not necessarily hold here, because
the table may have been emptied */
DBUG_ASSERT(old_n_cols >= DATA_N_SYS_COLS);
DBUG_ASSERT(n_cols == n_def);
DBUG_ASSERT(index->n_def == index->n_fields);
DBUG_ASSERT(index->n_core_fields <= index->n_fields);
DBUG_ASSERT(old_n_core_fields <= old_n_fields);
DBUG_ASSERT(instant || !old_instant);
instant = old_instant;
index->n_nullable = 0;
for (unsigned i = old_n_fields; i--; ) {
if (old_fields[i].col->is_nullable()) {
index->n_nullable++;
}
}
for (unsigned i = n_v_cols; i--; ) {
v_cols[i].~dict_v_col_t();
}
index->n_core_fields = ((index->n_fields == index->n_core_fields)
? old_n_fields
: old_n_core_fields)
& dict_index_t::MAX_N_FIELDS;
index->n_def = index->n_fields = old_n_fields
& dict_index_t::MAX_N_FIELDS;
index->n_core_null_bytes = static_cast<uint8_t>(
UT_BITS_IN_BYTES(index->get_n_nullable(index->n_core_fields)));
const dict_col_t* const new_cols = cols;
const dict_col_t* const new_cols_end __attribute__((unused)) = cols + n_cols;
const dict_v_col_t* const new_v_cols = v_cols;
const dict_v_col_t* const new_v_cols_end __attribute__((unused))= v_cols + n_v_cols;
cols = old_cols;
col_names = old_col_names;
v_cols = old_v_cols;
v_col_names = old_v_col_names;
n_def = n_cols = old_n_cols & dict_index_t::MAX_N_FIELDS;
n_v_def = n_v_cols = old_n_v_cols & dict_index_t::MAX_N_FIELDS;
n_t_def = n_t_cols = (n_cols + n_v_cols) & dict_index_t::MAX_N_FIELDS;
if (versioned()) {
for (unsigned i = 0; i < n_cols; ++i) {
if (cols[i].vers_sys_start()) {
vers_start = i & dict_index_t::MAX_N_FIELDS;
} else if (cols[i].vers_sys_end()) {
vers_end = i & dict_index_t::MAX_N_FIELDS;
}
}
}
index->fields = old_fields;
while ((index = dict_table_get_next_index(index)) != NULL) {
if (index->to_be_dropped) {
/* instant_column() did not adjust these indexes. */
continue;
}
for (unsigned i = 0; i < index->n_fields; i++) {
dict_field_t& f = index->fields[i];
if (f.col->is_virtual()) {
DBUG_ASSERT(f.col >= &new_v_cols->m_col);
DBUG_ASSERT(f.col < &new_v_cols_end->m_col);
size_t n = size_t(
reinterpret_cast<dict_v_col_t*>(f.col)
- new_v_cols);
DBUG_ASSERT(n <= n_v_cols);
ulint old_col_no = find_old_col_no(
col_map + n_cols, n, n_v_cols);
DBUG_ASSERT(old_col_no <= n_v_cols);
f.col = &v_cols[old_col_no].m_col;
DBUG_ASSERT(f.col->is_virtual());
} else {
DBUG_ASSERT(f.col >= new_cols);
DBUG_ASSERT(f.col < new_cols_end);
size_t n = size_t(f.col - new_cols);
DBUG_ASSERT(n <= n_cols);
ulint old_col_no = find_old_col_no(col_map,
n, n_cols);
DBUG_ASSERT(old_col_no < n_cols);
f.col = &cols[old_col_no];
DBUG_ASSERT(!f.col->is_virtual());
}
f.name = f.col->name(*this);
}
}
}
/* Report an InnoDB error to the client by invoking my_error().
@param error InnoDB error code
@param table table name
@param flags table flags */
ATTRIBUTE_COLD __attribute__((nonnull))
void
my_error_innodb(dberr_t error, const char *table, ulint flags)
{
switch (error) {
case DB_MISSING_HISTORY:
my_error(ER_TABLE_DEF_CHANGED, MYF(0));
break;
case DB_RECORD_NOT_FOUND:
my_error(ER_KEY_NOT_FOUND, MYF(0), table);
break;
case DB_DEADLOCK:
my_error(ER_LOCK_DEADLOCK, MYF(0));
break;
case DB_RECORD_CHANGED:
my_error(ER_CHECKREAD, MYF(0), table);
break;
case DB_LOCK_WAIT_TIMEOUT:
my_error(ER_LOCK_WAIT_TIMEOUT, MYF(0));
break;
case DB_INTERRUPTED:
my_error(ER_QUERY_INTERRUPTED, MYF(0));
break;
case DB_OUT_OF_MEMORY:
my_error(ER_OUT_OF_RESOURCES, MYF(0));
break;
case DB_OUT_OF_FILE_SPACE:
my_error(ER_RECORD_FILE_FULL, MYF(0), table);
break;
case DB_TEMP_FILE_WRITE_FAIL:
my_error(ER_TEMP_FILE_WRITE_FAILURE, MYF(0));
break;
case DB_TOO_BIG_INDEX_COL:
my_error(ER_INDEX_COLUMN_TOO_LONG, MYF(0),
(ulong) DICT_MAX_FIELD_LEN_BY_FORMAT_FLAG(flags));
break;
case DB_TOO_MANY_CONCURRENT_TRXS:
my_error(ER_TOO_MANY_CONCURRENT_TRXS, MYF(0));
break;
case DB_LOCK_TABLE_FULL:
my_error(ER_LOCK_TABLE_FULL, MYF(0));
break;
case DB_UNDO_RECORD_TOO_BIG:
my_error(ER_UNDO_RECORD_TOO_BIG, MYF(0));
break;
case DB_CORRUPTION:
my_error(ER_NOT_KEYFILE, MYF(0), table);
break;
case DB_TOO_BIG_RECORD: {
/* Note that in page0zip.ic page_zip_rec_needs_ext() rec_size
is limited to COMPRESSED_REC_MAX_DATA_SIZE (16K) or
REDUNDANT_REC_MAX_DATA_SIZE (16K-1). */
bool comp = !!(flags & DICT_TF_COMPACT);
ulint free_space = page_get_free_space_of_empty(comp) / 2;
if (free_space >= ulint(comp ? COMPRESSED_REC_MAX_DATA_SIZE :
REDUNDANT_REC_MAX_DATA_SIZE)) {
free_space = (comp ? COMPRESSED_REC_MAX_DATA_SIZE :
REDUNDANT_REC_MAX_DATA_SIZE) - 1;
}
my_error(ER_TOO_BIG_ROWSIZE, MYF(0), free_space);
break;
}
case DB_INVALID_NULL:
/* TODO: report the row, as we do for DB_DUPLICATE_KEY */
my_error(ER_INVALID_USE_OF_NULL, MYF(0));
break;
case DB_CANT_CREATE_GEOMETRY_OBJECT:
my_error(ER_CANT_CREATE_GEOMETRY_OBJECT, MYF(0));
break;
case DB_TABLESPACE_EXISTS:
my_error(ER_TABLESPACE_EXISTS, MYF(0), table);
break;
#ifdef UNIV_DEBUG
case DB_SUCCESS:
case DB_DUPLICATE_KEY:
case DB_ONLINE_LOG_TOO_BIG:
/* These codes should not be passed here. */
ut_error;
#endif /* UNIV_DEBUG */
default:
my_error(ER_GET_ERRNO, MYF(0), error, "InnoDB");
break;
}
}
/** Get the name of an erroneous key.
@param[in] error_key_num InnoDB number of the erroneus key
@param[in] ha_alter_info changes that were being performed
@param[in] table InnoDB table
@return the name of the erroneous key */
static
const char*
get_error_key_name(
ulint error_key_num,
const Alter_inplace_info* ha_alter_info,
const dict_table_t* table)
{
if (error_key_num == ULINT_UNDEFINED) {
return(FTS_DOC_ID_INDEX_NAME);
} else if (ha_alter_info->key_count == 0) {
return(dict_table_get_first_index(table)->name);
} else {
return(ha_alter_info->key_info_buffer[error_key_num].name.str);
}
}
/** Convert field type and length to InnoDB format */
static void get_type(const Field &f, uint &prtype, uint8_t &mtype,
uint16_t &len)
{
mtype= get_innobase_type_from_mysql_type(&prtype, &f);
len= static_cast<uint16_t>(f.pack_length());
prtype|= f.type();
if (f.type() == MYSQL_TYPE_VARCHAR)
{
auto l= static_cast<const Field_varstring&>(f).length_bytes;
len= static_cast<uint16_t>(len - l);
if (l == 2)
prtype|= DATA_LONG_TRUE_VARCHAR;
}
if (!f.real_maybe_null())
prtype |= DATA_NOT_NULL;
if (f.binary())
prtype |= DATA_BINARY_TYPE;
if (f.table->versioned())
{
if (&f == f.table->field[f.table->s->vers.start_fieldno])
prtype|= DATA_VERS_START;
else if (&f == f.table->field[f.table->s->vers.end_fieldno])
prtype|= DATA_VERS_END;
else if (!(f.flags & VERS_UPDATE_UNVERSIONED_FLAG))
prtype|= DATA_VERSIONED;
}
if (!f.stored_in_db())
prtype|= DATA_VIRTUAL;
if (dtype_is_string_type(mtype))
prtype|= f.charset()->number << 16;
}
struct ha_innobase_inplace_ctx : public inplace_alter_handler_ctx
{
/** Dummy query graph */
que_thr_t*const thr;
/** The prebuilt struct of the creating instance */
row_prebuilt_t*& prebuilt;
/** InnoDB indexes being created */
dict_index_t** add_index;
/** MySQL key numbers for the InnoDB indexes that are being created */
const ulint* add_key_numbers;
/** number of InnoDB indexes being created */
ulint num_to_add_index;
/** InnoDB indexes being dropped */
dict_index_t** drop_index;
/** number of InnoDB indexes being dropped */
const ulint num_to_drop_index;
/** InnoDB foreign key constraints being dropped */
dict_foreign_t** drop_fk;
/** number of InnoDB foreign key constraints being dropped */
const ulint num_to_drop_fk;
/** InnoDB foreign key constraints being added */
dict_foreign_t** add_fk;
/** number of InnoDB foreign key constraints being dropped */
const ulint num_to_add_fk;
/** whether to create the indexes online */
const bool online;
/** memory heap */
mem_heap_t* const heap;
/** dictionary transaction */
trx_t* trx;
/** original table (if rebuilt, differs from indexed_table) */
dict_table_t* old_table;
/** table where the indexes are being created or dropped */
dict_table_t* new_table;
/** table definition for instant ADD/DROP/reorder COLUMN */
dict_table_t* instant_table;
/** mapping of old column numbers to new ones, or NULL */
const ulint* col_map;
/** new column names, or NULL if nothing was renamed */
const char** col_names;
/** added AUTO_INCREMENT column position, or ULINT_UNDEFINED */
const ulint add_autoinc;
/** default values of ADD and CHANGE COLUMN, or NULL */
const dtuple_t* defaults;
/** autoinc sequence to use */
ib_sequence_t sequence;
/** temporary table name to use for old table when renaming tables */
const char* tmp_name;
/** whether the order of the clustered index is unchanged */
bool skip_pk_sort;
/** number of virtual columns to be added */
unsigned num_to_add_vcol;
/** virtual columns to be added */
dict_v_col_t* add_vcol;
const char** add_vcol_name;
/** number of virtual columns to be dropped */
unsigned num_to_drop_vcol;
/** virtual columns to be dropped */
dict_v_col_t* drop_vcol;
const char** drop_vcol_name;
/** ALTER TABLE stage progress recorder */
ut_stage_alter_t* m_stage;
/** original number of user columns in the table */
const unsigned old_n_cols;
/** original columns of the table */
dict_col_t* const old_cols;
/** original column names of the table */
const char* const old_col_names;
/** original instantly dropped or reordered columns */
dict_instant_t* const old_instant;
/** original index fields */
dict_field_t* const old_fields;
/** size of old_fields */
const unsigned old_n_fields;
/** original old_table->n_core_fields */
const unsigned old_n_core_fields;
/** original number of virtual columns in the table */
const unsigned old_n_v_cols;
/** original virtual columns of the table */
dict_v_col_t* const old_v_cols;
/** original virtual column names of the table */
const char* const old_v_col_names;
/** 0, or 1 + first column whose position changes in instant ALTER */
unsigned first_alter_pos;
/** Allow non-null conversion.
(1) Alter ignore should allow the conversion
irrespective of sql mode.
(2) Don't allow the conversion in strict mode
(3) Allow the conversion only in non-strict mode. */
const bool allow_not_null;
/** The page_compression_level attribute, or 0 */
const uint page_compression_level;
/** Indexed columns whose charset-collation is changing
in a way that does not require the table to be rebuilt */
col_collations change_col_collate;
ha_innobase_inplace_ctx(row_prebuilt_t*& prebuilt_arg,
dict_index_t** drop_arg,
ulint num_to_drop_arg,
dict_foreign_t** drop_fk_arg,
ulint num_to_drop_fk_arg,
dict_foreign_t** add_fk_arg,
ulint num_to_add_fk_arg,
bool online_arg,
mem_heap_t* heap_arg,
dict_table_t* new_table_arg,
const char** col_names_arg,
ulint add_autoinc_arg,
ulonglong autoinc_col_min_value_arg,
ulonglong autoinc_col_max_value_arg,
bool allow_not_null_flag,
bool page_compressed,
ulonglong page_compression_level_arg) :
inplace_alter_handler_ctx(),
thr (pars_complete_graph_for_exec(nullptr, prebuilt_arg->trx,
heap_arg, prebuilt_arg)),
prebuilt (prebuilt_arg),
add_index (0), add_key_numbers (0), num_to_add_index (0),
drop_index (drop_arg), num_to_drop_index (num_to_drop_arg),
drop_fk (drop_fk_arg), num_to_drop_fk (num_to_drop_fk_arg),
add_fk (add_fk_arg), num_to_add_fk (num_to_add_fk_arg),
online (online_arg), heap (heap_arg),
trx (innobase_trx_allocate(prebuilt_arg->trx->mysql_thd)),
old_table (prebuilt_arg->table),
new_table (new_table_arg), instant_table (0),
col_map (0), col_names (col_names_arg),
add_autoinc (add_autoinc_arg),
defaults (0),
sequence(prebuilt->trx->mysql_thd,
autoinc_col_min_value_arg, autoinc_col_max_value_arg),
tmp_name (0),
skip_pk_sort(false),
num_to_add_vcol(0),
add_vcol(0),
add_vcol_name(0),
num_to_drop_vcol(0),
drop_vcol(0),
drop_vcol_name(0),
m_stage(NULL),
old_n_cols(prebuilt_arg->table->n_cols),
old_cols(prebuilt_arg->table->cols),
old_col_names(prebuilt_arg->table->col_names),
old_instant(prebuilt_arg->table->instant),
old_fields(prebuilt_arg->table->indexes.start->fields),
old_n_fields(prebuilt_arg->table->indexes.start->n_fields),
old_n_core_fields(prebuilt_arg->table->indexes.start
->n_core_fields),
old_n_v_cols(prebuilt_arg->table->n_v_cols),
old_v_cols(prebuilt_arg->table->v_cols),
old_v_col_names(prebuilt_arg->table->v_col_names),
first_alter_pos(0),
allow_not_null(allow_not_null_flag),
page_compression_level(page_compressed
? (page_compression_level_arg
? uint(page_compression_level_arg)
: page_zip_level)
: 0)
{
ut_ad(old_n_cols >= DATA_N_SYS_COLS);
ut_ad(page_compression_level <= 9);
#ifdef UNIV_DEBUG
for (ulint i = 0; i < num_to_add_index; i++) {
ut_ad(!add_index[i]->to_be_dropped);
}
for (ulint i = 0; i < num_to_drop_index; i++) {
ut_ad(drop_index[i]->to_be_dropped);
}
#endif /* UNIV_DEBUG */
trx_start_for_ddl(trx);
}
~ha_innobase_inplace_ctx() override
{
UT_DELETE(m_stage);
if (instant_table) {
ut_ad(!instant_table->id);
while (dict_index_t* index
= UT_LIST_GET_LAST(instant_table->indexes)) {
UT_LIST_REMOVE(instant_table->indexes, index);
index->lock.free();
dict_mem_index_free(index);
}
for (unsigned i = old_n_v_cols; i--; ) {
old_v_cols[i].~dict_v_col_t();
}
if (instant_table->fts) {
instant_table->fts->~fts_t();
instant_table->fts = nullptr;
}
dict_mem_table_free(instant_table);
}
mem_heap_free(heap);
}
/** Determine if the table will be rebuilt.
@return whether the table will be rebuilt */
bool need_rebuild () const { return(old_table != new_table); }
/** Convert table-rebuilding ALTER to instant ALTER. */
void prepare_instant()
{
DBUG_ASSERT(need_rebuild());
DBUG_ASSERT(!is_instant());
DBUG_ASSERT(old_table->n_cols == old_n_cols);
instant_table = new_table;
new_table = old_table;
export_vars.innodb_instant_alter_column++;
instant_table->prepare_instant(*old_table, col_map,
first_alter_pos);
}
/** Adjust table metadata for instant ADD/DROP/reorder COLUMN.
@return whether the metadata record must be updated */
bool instant_column()
{
DBUG_ASSERT(is_instant());
DBUG_ASSERT(old_n_fields
== old_table->indexes.start->n_fields);
return old_table->instant_column(*instant_table, col_map);
}
/** Revert prepare_instant() if the transaction is rolled back. */
void rollback_instant()
{
if (!is_instant()) return;
old_table->rollback_instant(old_n_cols,
old_cols, old_col_names,
old_instant,
old_fields, old_n_fields,
old_n_core_fields,
old_n_v_cols, old_v_cols,
old_v_col_names,
col_map);
}
/** @return whether this is instant ALTER TABLE */
bool is_instant() const
{
DBUG_ASSERT(!instant_table || !instant_table->can_be_evicted);
return instant_table;
}
/** Create an index table where indexes are ordered as follows:
IF a new primary key is defined for the table THEN
1) New primary key
2) The remaining keys in key_info
ELSE
1) All new indexes in the order they arrive from MySQL
ENDIF
@return key definitions */
MY_ATTRIBUTE((nonnull, warn_unused_result, malloc))
inline index_def_t*
create_key_defs(
const Alter_inplace_info* ha_alter_info,
/*!< in: alter operation */
const TABLE* altered_table,
/*!< in: MySQL table that is being altered */
ulint& n_fts_add,
/*!< out: number of FTS indexes to be created */
ulint& fts_doc_id_col,
/*!< in: The column number for Doc ID */
bool& add_fts_doc_id,
/*!< in: whether we need to add new DOC ID
column for FTS index */
bool& add_fts_doc_idx,
/*!< in: whether we need to add new DOC ID
index for FTS index */
const TABLE* table);
/*!< in: MySQL table that is being altered */
/** Share context between partitions.
@param[in] ctx context from another partition of the table */
void set_shared_data(const inplace_alter_handler_ctx& ctx) override
{
if (add_autoinc != ULINT_UNDEFINED) {
const ha_innobase_inplace_ctx& ha_ctx =
static_cast<const ha_innobase_inplace_ctx&>
(ctx);
/* When adding an AUTO_INCREMENT column to a
partitioned InnoDB table, we must share the
sequence for all partitions. */
ut_ad(ha_ctx.add_autoinc == add_autoinc);
ut_ad(ha_ctx.sequence.last());
sequence = ha_ctx.sequence;
}
}
/** @return whether the given column is being added */
bool is_new_vcol(const dict_v_col_t &v_col) const
{
for (ulint i= 0; i < num_to_add_vcol; i++)
if (&add_vcol[i] == &v_col)
return true;
return false;
}
/** During rollback, make newly added indexes point to
newly added virtual columns. */
void clean_new_vcol_index()
{
ut_ad(old_table == new_table);
const dict_index_t *index= dict_table_get_first_index(old_table);
while ((index= dict_table_get_next_index(index)) != NULL)
{
if (!index->has_virtual() || index->is_committed())
continue;
ulint n_drop_new_vcol= index->get_new_n_vcol();
for (ulint i= 0; n_drop_new_vcol && i < index->n_fields; i++)
{
dict_col_t *col= index->fields[i].col;
/* Skip the non-virtual and old virtual columns */
if (!col->is_virtual())
continue;
dict_v_col_t *vcol= reinterpret_cast<dict_v_col_t*>(col);
if (!is_new_vcol(*vcol))
continue;
index->fields[i].col= &index->new_vcol_info->
add_drop_v_col(index->heap, vcol, --n_drop_new_vcol)->m_col;
}
}
}
/** @return whether a FULLTEXT INDEX is being added */
bool adding_fulltext_index() const
{
for (ulint a= 0; a < num_to_add_index; a++)
if (add_index[a]->type & DICT_FTS)
return true;
return false;
}
/** Handle the apply log failure for online DDL operation.
@param ha_alter_info handler alter inplace info
@param altered_table MySQL table that is being altered
@param error error code
@retval false if error value is DB_SUCCESS or
TRUE in case of error */
bool log_failure(Alter_inplace_info *ha_alter_info,
TABLE *altered_table, dberr_t error)
{
ulint err_key= thr_get_trx(thr)->error_key_num;
switch (error) {
KEY *dup_key;
case DB_SUCCESS:
return false;
case DB_DUPLICATE_KEY:
if (err_key == ULINT_UNDEFINED)
/* This should be the hidden index on FTS_DOC_ID */
dup_key= nullptr;
else
{
DBUG_ASSERT(err_key < ha_alter_info->key_count);
dup_key= &ha_alter_info->key_info_buffer[err_key];
}
print_keydup_error(altered_table, dup_key, MYF(0));
break;
case DB_ONLINE_LOG_TOO_BIG:
my_error(ER_INNODB_ONLINE_LOG_TOO_BIG, MYF(0),
get_error_key_name(err_key, ha_alter_info, new_table));
break;
case DB_INDEX_CORRUPT:
my_error(ER_INDEX_CORRUPT, MYF(0),
get_error_key_name(err_key, ha_alter_info, new_table));
break;
default:
my_error_innodb(error, old_table->name.m_name, old_table->flags);
}
return true;
}
/** Check whether the column has any change in collation type.
If it is then store the column information in heap
@param index index being added (or rebuilt)
@param altered_table altered table definition */
void change_col_collation(dict_index_t *index, const TABLE &altered_table)
{
ut_ad(!need_rebuild());
ut_ad(!index->is_primary());
ut_ad(!index->is_committed());
unsigned n_cols= 0;
for (unsigned i= 0; i < index->n_fields; i++)
{
const char *field_name= index->fields[i].name();
if (!field_name || !dtype_is_string_type(index->fields[i].col->mtype) ||
index->fields[i].col->is_virtual())
continue;
for (uint j= 0; j < altered_table.s->fields; j++)
{
const Field *altered_field= altered_table.field[j];
if (my_strcasecmp(system_charset_info, field_name,
altered_field->field_name.str))
continue;
unsigned prtype;
uint8_t mtype;
uint16_t len;
get_type(*altered_field, prtype, mtype, len);
if (prtype == index->fields[i].col->prtype)
continue;
auto it= change_col_collate.find(index->fields[i].col->ind);
if (it != change_col_collate.end())
{
n_cols++;
index->fields[i].col= it->second;
continue;
}
const CHARSET_INFO *cs= altered_field->charset();
dict_col_t *col=
static_cast<dict_col_t*>(mem_heap_alloc(heap, sizeof *col));
*col= *index->fields[i].col;
col->prtype= prtype;
col->mtype= mtype;
col->mbminlen= cs->mbminlen & 7;
col->mbmaxlen= cs->mbmaxlen & 7;
col->len= len;
index->fields[i].col= col;
n_cols++;
change_col_collate[col->ind]= col;
}
}
index->init_change_cols(n_cols);
}
void cleanup_col_collation()
{
ut_ad(old_table == new_table);
if (change_col_collate.empty())
return;
const dict_index_t *index= dict_table_get_first_index(old_table);
while ((index= dict_table_get_next_index(index)) != nullptr)
{
if (index->is_committed())
continue;
auto collate_end= change_col_collate.end();
for (unsigned i= 0, j= 0; i < index->n_fields; i++)
{
const dict_col_t *col= index->fields[i].col;
auto it= change_col_collate.find(col->ind);
if (it != collate_end)
{
ut_ad(it->second == col);
index->fields[i].col=
index->change_col_info->add(index->heap, *col, j++);
}
}
}
}
};
/** Determine if fulltext indexes exist in a given table.
@param table MySQL table
@return number of fulltext indexes */
static uint innobase_fulltext_exist(const TABLE* table)
{
uint count = 0;
for (uint i = 0; i < table->s->keys; i++) {
if (table->key_info[i].flags & HA_FULLTEXT) {
count++;
}
}
return count;
}
/** Determine whether indexed virtual columns exist in a table.
@param[in] table table definition
@return whether indexes exist on virtual columns */
static bool innobase_indexed_virtual_exist(const TABLE* table)
{
const KEY* const end = &table->key_info[table->s->keys];
for (const KEY* key = table->key_info; key < end; key++) {
const KEY_PART_INFO* const key_part_end = key->key_part
+ key->user_defined_key_parts;
for (const KEY_PART_INFO* key_part = key->key_part;
key_part < key_part_end; key_part++) {
if (!key_part->field->stored_in_db())
return true;
}
}
return false;
}
/** Determine if spatial indexes exist in a given table.
@param table MySQL table
@return whether spatial indexes exist on the table */
static
bool
innobase_spatial_exist(
/*===================*/
const TABLE* table)
{
for (uint i = 0; i < table->s->keys; i++) {
if (table->key_info[i].flags & HA_SPATIAL) {
return(true);
}
}
return(false);
}
/** Determine if ALTER_OPTIONS requires rebuilding the table.
@param[in] ha_alter_info the ALTER TABLE operation
@param[in] table metadata before ALTER TABLE
@return whether it is mandatory to rebuild the table */
static bool alter_options_need_rebuild(
const Alter_inplace_info* ha_alter_info,
const TABLE* table)
{
DBUG_ASSERT(ha_alter_info->handler_flags & ALTER_OPTIONS);
if (ha_alter_info->create_info->used_fields
& (HA_CREATE_USED_ROW_FORMAT
| HA_CREATE_USED_KEY_BLOCK_SIZE)) {
/* Specifying ROW_FORMAT or KEY_BLOCK_SIZE requires
rebuilding the table. (These attributes in the .frm
file may disagree with the InnoDB data dictionary, and
the interpretation of thse attributes depends on
InnoDB parameters. That is why we for now always
require a rebuild when these attributes are specified.) */
return true;
}
const ha_table_option_struct& alt_opt=
*ha_alter_info->create_info->option_struct;
const ha_table_option_struct& opt= *table->s->option_struct;
/* Allow an instant change to enable page_compressed,
and any change of page_compression_level. */
if ((!alt_opt.page_compressed && opt.page_compressed)
|| alt_opt.encryption != opt.encryption
|| alt_opt.encryption_key_id != opt.encryption_key_id) {
return(true);
}
return false;
}
/** Determine if ALTER TABLE needs to rebuild the table
(or perform instant operation).
@param[in] ha_alter_info the ALTER TABLE operation
@param[in] table metadata before ALTER TABLE
@return whether it is necessary to rebuild the table or to alter columns */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_need_rebuild(
const Alter_inplace_info* ha_alter_info,
const TABLE* table)
{
if ((ha_alter_info->handler_flags & ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_NOREBUILD
| INNOBASE_ALTER_INSTANT))
== ALTER_OPTIONS) {
return alter_options_need_rebuild(ha_alter_info, table);
}
return !!(ha_alter_info->handler_flags & INNOBASE_ALTER_REBUILD);
}
/** Check if virtual column in old and new table are in order, excluding
those dropped column. This is needed because when we drop a virtual column,
ALTER_VIRTUAL_COLUMN_ORDER is also turned on, so we can't decide if this
is a real ORDER change or just DROP COLUMN
@param[in] table old TABLE
@param[in] altered_table new TABLE
@param[in] ha_alter_info Structure describing changes to be done
by ALTER TABLE and holding data used during in-place alter.
@return true is all columns in order, false otherwise. */
static
bool
check_v_col_in_order(
const TABLE* table,
const TABLE* altered_table,
Alter_inplace_info* ha_alter_info)
{
ulint j = 0;
/* We don't support any adding new virtual column before
existed virtual column. */
if (ha_alter_info->handler_flags
& ALTER_ADD_VIRTUAL_COLUMN) {
bool has_new = false;
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
if (new_field.stored_in_db()) {
continue;
}
/* Found a new added virtual column. */
if (!new_field.field) {
has_new = true;
continue;
}
/* If there's any old virtual column
after the new added virtual column,
order must be changed. */
if (has_new) {
return(false);
}
}
}
/* directly return true if ALTER_VIRTUAL_COLUMN_ORDER is not on */
if (!(ha_alter_info->handler_flags
& ALTER_VIRTUAL_COLUMN_ORDER)) {
return(true);
}
for (ulint i = 0; i < table->s->fields; i++) {
Field* field = table->field[i];
if (field->stored_in_db()) {
continue;
}
if (field->flags & FIELD_IS_DROPPED) {
continue;
}
/* Now check if the next virtual column in altered table
matches this column */
while (j < altered_table->s->fields) {
Field* new_field = altered_table->s->field[j];
if (new_field->stored_in_db()) {
j++;
continue;
}
if (my_strcasecmp(system_charset_info,
field->field_name.str,
new_field->field_name.str) != 0) {
/* different column */
return(false);
} else {
j++;
break;
}
}
if (j > altered_table->s->fields) {
/* there should not be less column in new table
without them being in drop list */
ut_ad(0);
return(false);
}
}
return(true);
}
/** Determine if an instant operation is possible for altering columns.
@param[in] ib_table InnoDB table definition
@param[in] ha_alter_info the ALTER TABLE operation
@param[in] table table definition before ALTER TABLE
@param[in] altered_table table definition after ALTER TABLE
@param[in] strict whether to ensure that user records fit */
static
bool
instant_alter_column_possible(
const dict_table_t& ib_table,
const Alter_inplace_info* ha_alter_info,
const TABLE* table,
const TABLE* altered_table,
bool strict)
{
const dict_index_t* const pk = ib_table.indexes.start;
ut_ad(pk->is_primary());
ut_ad(!pk->has_virtual());
if (ha_alter_info->handler_flags
& (ALTER_STORED_COLUMN_ORDER | ALTER_DROP_STORED_COLUMN
| ALTER_ADD_STORED_BASE_COLUMN)) {
#if 1 // MDEV-17459: adjust fts_fetch_doc_from_rec() and friends; remove this
if (ib_table.fts || innobase_fulltext_exist(altered_table))
return false;
#endif
#if 1 // MDEV-17468: fix bugs with indexed virtual columns & remove this
for (const dict_index_t* index = ib_table.indexes.start;
index; index = index->indexes.next) {
if (index->has_virtual()) {
ut_ad(ib_table.n_v_cols
|| index->is_corrupted());
return false;
}
}
#endif
uint n_add = 0, n_nullable = 0, lenlen = 0;
const uint blob_prefix = dict_table_has_atomic_blobs(&ib_table)
? 0
: REC_ANTELOPE_MAX_INDEX_COL_LEN;
const uint min_local_len = blob_prefix
? blob_prefix + FIELD_REF_SIZE
: 2 * FIELD_REF_SIZE;
size_t min_size = 0, max_size = 0;
Field** af = altered_table->field;
Field** const end = altered_table->field
+ altered_table->s->fields;
List_iterator_fast<Create_field> cf_it(
ha_alter_info->alter_info->create_list);
for (; af < end; af++) {
const Create_field* cf = cf_it++;
if (!(*af)->stored_in_db() || cf->field) {
/* Virtual or pre-existing column */
continue;
}
const bool nullable = (*af)->real_maybe_null();
const bool is_null = (*af)->is_real_null();
ut_ad(!is_null || nullable);
n_nullable += nullable;
n_add++;
uint l = (*af)->pack_length();
switch ((*af)->type()) {
case MYSQL_TYPE_VARCHAR:
variable_length:
if (l >= min_local_len) {
max_size += blob_prefix
+ FIELD_REF_SIZE;
if (!is_null) {
min_size += blob_prefix
+ FIELD_REF_SIZE;
}
lenlen += 2;
} else {
if (!is_null) {
min_size += l;
}
max_size += l;
lenlen += l > 255 ? 2 : 1;
}
break;
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_LONG_BLOB:
l = reinterpret_cast<const Field_blob*>
((*af))->get_length();
goto variable_length;
default:
if (l > 255 && ib_table.not_redundant()) {
goto variable_length;
}
max_size += l;
if (!is_null) {
min_size += l;
}
}
}
ulint n_fields = pk->n_fields + n_add;
if (n_fields >= REC_MAX_N_USER_FIELDS + DATA_N_SYS_COLS) {
return false;
}
if (pk->is_gen_clust()) {
min_size += DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN
+ DATA_ROW_ID_LEN;
max_size += DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN
+ DATA_ROW_ID_LEN;
} else {
min_size += DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN;
max_size += DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN;
}
uint i = pk->n_fields;
while (i-- > pk->n_core_fields) {
const dict_field_t& f = pk->fields[i];
if (f.col->is_nullable()) {
n_nullable++;
if (!f.col->is_dropped()
&& f.col->def_val.data) {
goto instantly_added_column;
}
} else if (f.fixed_len
&& (f.fixed_len <= 255
|| !ib_table.not_redundant())) {
if (ib_table.not_redundant()
|| !f.col->is_dropped()) {
min_size += f.fixed_len;
max_size += f.fixed_len;
}
} else if (f.col->is_dropped() || !f.col->is_added()) {
lenlen++;
goto set_max_size;
} else {
instantly_added_column:
ut_ad(f.col->is_added());
if (f.col->def_val.len >= min_local_len) {
min_size += blob_prefix
+ FIELD_REF_SIZE;
lenlen += 2;
} else {
min_size += f.col->def_val.len;
lenlen += f.col->def_val.len
> 255 ? 2 : 1;
}
set_max_size:
if (f.fixed_len
&& (f.fixed_len <= 255
|| !ib_table.not_redundant())) {
max_size += f.fixed_len;
} else if (f.col->len >= min_local_len) {
max_size += blob_prefix
+ FIELD_REF_SIZE;
} else {
max_size += f.col->len;
}
}
}
do {
const dict_field_t& f = pk->fields[i];
if (f.col->is_nullable()) {
n_nullable++;
} else if (f.fixed_len) {
min_size += f.fixed_len;
} else {
lenlen++;
}
} while (i--);
if (ib_table.instant
|| (ha_alter_info->handler_flags
& (ALTER_STORED_COLUMN_ORDER
| ALTER_DROP_STORED_COLUMN))) {
n_fields++;
lenlen += 2;
min_size += FIELD_REF_SIZE;
}
if (ib_table.not_redundant()) {
min_size += REC_N_NEW_EXTRA_BYTES
+ UT_BITS_IN_BYTES(n_nullable)
+ lenlen;
} else {
min_size += (n_fields > 255 || min_size > 255)
? n_fields * 2 : n_fields;
min_size += REC_N_OLD_EXTRA_BYTES;
}
if (page_zip_rec_needs_ext(min_size, ib_table.not_redundant(),
0, 0)) {
return false;
}
if (strict && page_zip_rec_needs_ext(max_size,
ib_table.not_redundant(),
0, 0)) {
return false;
}
}
// Making table system-versioned instantly is not implemented yet.
if (ha_alter_info->handler_flags & ALTER_ADD_SYSTEM_VERSIONING) {
return false;
}
static constexpr alter_table_operations avoid_rebuild
= ALTER_ADD_STORED_BASE_COLUMN
| ALTER_DROP_STORED_COLUMN
| ALTER_STORED_COLUMN_ORDER
| ALTER_COLUMN_NULLABLE;
if (!(ha_alter_info->handler_flags & avoid_rebuild)) {
alter_table_operations flags = ha_alter_info->handler_flags
& ~avoid_rebuild;
/* None of the flags are set that we can handle
specially to avoid rebuild. In this case, we can
allow ALGORITHM=INSTANT, except if some requested
operation requires that the table be rebuilt. */
if (flags & INNOBASE_ALTER_REBUILD) {
return false;
}
if ((flags & ALTER_OPTIONS)
&& alter_options_need_rebuild(ha_alter_info, table)) {
return false;
}
} else if (!ib_table.supports_instant()) {
return false;
}
/* At the moment, we disallow ADD [UNIQUE] INDEX together with
instant ADD COLUMN.
The main reason is that the work of instant ADD must be done
in commit_inplace_alter_table(). For the rollback_instant()
to work, we must add the columns to dict_table_t beforehand,
and roll back those changes in case the transaction is rolled
back.
If we added the columns to the dictionary cache already in the
prepare_inplace_alter_table(), we would have to deal with
column number mismatch in ha_innobase::open(), write_row() and
other functions. */
/* FIXME: allow instant ADD COLUMN together with
INNOBASE_ONLINE_CREATE (ADD [UNIQUE] INDEX) on pre-existing
columns. */
if (ha_alter_info->handler_flags
& ((INNOBASE_ALTER_REBUILD | INNOBASE_ONLINE_CREATE)
& ~ALTER_DROP_STORED_COLUMN
& ~ALTER_STORED_COLUMN_ORDER
& ~ALTER_ADD_STORED_BASE_COLUMN
& ~ALTER_COLUMN_NULLABLE
& ~ALTER_OPTIONS)) {
return false;
}
if ((ha_alter_info->handler_flags & ALTER_OPTIONS)
&& alter_options_need_rebuild(ha_alter_info, table)) {
return false;
}
if (ha_alter_info->handler_flags & ALTER_COLUMN_NULLABLE) {
if (ib_table.not_redundant()) {
/* Instantaneous removal of NOT NULL is
only supported for ROW_FORMAT=REDUNDANT. */
return false;
}
if (ib_table.fts_doc_id_index
&& !innobase_fulltext_exist(altered_table)) {
/* Removing hidden FTS_DOC_ID_INDEX(FTS_DOC_ID)
requires that the table be rebuilt. */
return false;
}
Field** af = altered_table->field;
Field** const end = altered_table->field
+ altered_table->s->fields;
List_iterator_fast<Create_field> cf_it(
ha_alter_info->alter_info->create_list);
for (unsigned c = 0; af < end; af++) {
const Create_field* cf = cf_it++;
if (!cf->field || !(*af)->stored_in_db()) {
/* Ignore virtual or newly created
column */
continue;
}
const dict_col_t* col = dict_table_get_nth_col(
&ib_table, c++);
if (!col->ord_part || col->is_nullable()
|| !(*af)->real_maybe_null()) {
continue;
}
/* The column would be changed from NOT NULL.
Ensure that it is not a clustered index key. */
for (auto i = pk->n_uniq; i--; ) {
if (pk->fields[i].col == col) {
return false;
}
}
}
}
return true;
}
/** Check whether the non-const default value for the field
@param[in] field field which could be added or changed
@return true if the non-const default is present. */
static bool is_non_const_value(Field* field)
{
return field->default_value
&& field->default_value->flags
& uint(~(VCOL_SESSION_FUNC | VCOL_TIME_FUNC));
}
/** Set default value for the field.
@param[in] field field which could be added or changed
@return true if the default value is set. */
static bool set_default_value(Field* field)
{
/* The added/changed NOT NULL column lacks a DEFAULT value,
or the DEFAULT is the same for all rows.
(Time functions, such as CURRENT_TIMESTAMP(),
are evaluated from a timestamp that is assigned
at the start of the statement. Session
functions, such as USER(), always evaluate the
same within a statement.) */
ut_ad(!is_non_const_value(field));
/* Compute the DEFAULT values of non-constant columns
(VCOL_SESSION_FUNC | VCOL_TIME_FUNC). */
switch (field->set_default()) {
case 0: /* OK */
case 3: /* DATETIME to TIME or DATE conversion */
return true;
case -1: /* OOM, or GEOMETRY type mismatch */
case 1: /* A number adjusted to the min/max value */
case 2: /* String truncation, or conversion problem */
break;
}
return false;
}
/** Check whether the table has the FTS_DOC_ID column
@param[in] table InnoDB table with fulltext index
@param[in] altered_table MySQL table with fulltext index
@param[out] fts_doc_col_no The column number for Doc ID,
or ULINT_UNDEFINED if it is of wrong type
@param[out] num_v Number of virtual column
@param[in] check_only check only whether fts doc id exist.
@return whether there exists an FTS_DOC_ID column */
static
bool
innobase_fts_check_doc_id_col(
const dict_table_t* table,
const TABLE* altered_table,
ulint* fts_doc_col_no,
ulint* num_v,
bool check_only=false)
{
*fts_doc_col_no = ULINT_UNDEFINED;
const uint n_cols = altered_table->s->fields;
ulint i;
int err = 0;
*num_v = 0;
for (i = 0; i < n_cols; i++) {
const Field* field = altered_table->field[i];
if (!field->stored_in_db()) {
(*num_v)++;
}
if (my_strcasecmp(system_charset_info,
field->field_name.str, FTS_DOC_ID_COL_NAME)) {
continue;
}
if (strcmp(field->field_name.str, FTS_DOC_ID_COL_NAME)) {
err = ER_WRONG_COLUMN_NAME;
} else if (field->type() != MYSQL_TYPE_LONGLONG
|| field->pack_length() != 8
|| field->real_maybe_null()
|| !(field->flags & UNSIGNED_FLAG)
|| !field->stored_in_db()) {
err = ER_INNODB_FT_WRONG_DOCID_COLUMN;
} else {
*fts_doc_col_no = i - *num_v;
}
if (err && !check_only) {
my_error(err, MYF(0), field->field_name.str);
}
return(true);
}
if (!table) {
return(false);
}
/* Not to count the virtual columns */
i -= *num_v;
for (; i + DATA_N_SYS_COLS < (uint) table->n_cols; i++) {
const char* name = dict_table_get_col_name(table, i);
if (strcmp(name, FTS_DOC_ID_COL_NAME) == 0) {
#ifdef UNIV_DEBUG
const dict_col_t* col;
col = dict_table_get_nth_col(table, i);
/* Because the FTS_DOC_ID does not exist in
the .frm file or TABLE_SHARE, this must be the
internally created FTS_DOC_ID column. */
ut_ad(col->mtype == DATA_INT);
ut_ad(col->len == 8);
ut_ad(col->prtype & DATA_NOT_NULL);
ut_ad(col->prtype & DATA_UNSIGNED);
#endif /* UNIV_DEBUG */
*fts_doc_col_no = i;
return(true);
}
}
return(false);
}
/** Check whether the table is empty.
@param[in] table table to be checked
@param[in] ignore_delete_marked Ignore the delete marked
flag record
@return true if table is empty */
static bool innobase_table_is_empty(const dict_table_t *table,
bool ignore_delete_marked=true)
{
if (!table->space)
return false;
dict_index_t *clust_index= dict_table_get_first_index(table);
mtr_t mtr;
btr_pcur_t pcur;
buf_block_t *block;
page_cur_t *cur;
rec_t *rec;
bool next_page= false;
mtr.start();
if (pcur.open_leaf(true, clust_index, BTR_SEARCH_LEAF, &mtr) != DB_SUCCESS)
{
non_empty:
mtr.commit();
return false;
}
rec= page_rec_get_next(btr_pcur_get_rec(&pcur));
if (UNIV_UNLIKELY(!rec))
goto non_empty;
if (rec_is_metadata(rec, *clust_index))
btr_pcur_get_page_cur(&pcur)->rec= rec;
scan_leaf:
cur= btr_pcur_get_page_cur(&pcur);
if (UNIV_UNLIKELY(!page_cur_move_to_next(cur)))
goto non_empty;
next_page:
if (next_page)
{
uint32_t next_page_no= btr_page_get_next(page_cur_get_page(cur));
if (next_page_no == FIL_NULL)
{
mtr.commit();
return true;
}
next_page= false;
block= btr_block_get(*clust_index, next_page_no, RW_S_LATCH, &mtr);
if (!block)
goto non_empty;
page_cur_set_before_first(block, cur);
if (UNIV_UNLIKELY(!page_cur_move_to_next(cur)))
goto non_empty;
const auto s= mtr.get_savepoint();
mtr.rollback_to_savepoint(s - 2, s - 1);
}
rec= page_cur_get_rec(cur);
if (rec_get_deleted_flag(rec, dict_table_is_comp(table)))
{
if (ignore_delete_marked)
goto scan_leaf;
goto non_empty;
}
else if (!page_rec_is_supremum(rec))
goto non_empty;
else
{
next_page= true;
goto next_page;
}
goto scan_leaf;
}
/** Check if InnoDB supports a particular alter table in-place
@param altered_table TABLE object for new version of table.
@param ha_alter_info Structure describing changes to be done
by ALTER TABLE and holding data used during in-place alter.
@retval HA_ALTER_INPLACE_NOT_SUPPORTED Not supported
@retval HA_ALTER_INPLACE_INSTANT
MDL_EXCLUSIVE is needed for executing prepare_inplace_alter_table()
and commit_inplace_alter_table(). inplace_alter_table() will not be called.
@retval HA_ALTER_INPLACE_COPY_NO_LOCK
MDL_EXCLUSIVE in prepare_inplace_alter_table(), which can be downgraded to
LOCK=NONE for rebuilding the table in inplace_alter_table()
@retval HA_ALTER_INPLACE_COPY_LOCK
MDL_EXCLUSIVE in prepare_inplace_alter_table(), which can be downgraded to
LOCK=SHARED for rebuilding the table in inplace_alter_table()
@retval HA_ALTER_INPLACE_NOCOPY_NO_LOCK
MDL_EXCLUSIVE in prepare_inplace_alter_table(), which can be downgraded to
LOCK=NONE for inplace_alter_table() which will not rebuild the table
@retval HA_ALTER_INPLACE_NOCOPY_LOCK
MDL_EXCLUSIVE in prepare_inplace_alter_table(), which can be downgraded to
LOCK=SHARED for inplace_alter_table() which will not rebuild the table
*/
enum_alter_inplace_result
ha_innobase::check_if_supported_inplace_alter(
TABLE* altered_table,
Alter_inplace_info* ha_alter_info)
{
DBUG_ENTER("check_if_supported_inplace_alter");
if ((ha_alter_info->handler_flags
& INNOBASE_ALTER_VERSIONED_REBUILD)
&& altered_table->versioned(VERS_TIMESTAMP)) {
ha_alter_info->unsupported_reason =
"Not implemented for system-versioned timestamp tables";
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
/* Before 10.2.2 information about virtual columns was not stored in
system tables. We need to do a full alter to rebuild proper 10.2.2+
metadata with the information about virtual columns */
if (omits_virtual_cols(*table_share)) {
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
if (altered_table->s->fields > REC_MAX_N_USER_FIELDS) {
/* Deny the inplace ALTER TABLE. MySQL will try to
re-create the table and ha_innobase::create() will
return an error too. This is how we effectively
deny adding too many columns to a table. */
ha_alter_info->unsupported_reason =
my_get_err_msg(ER_TOO_MANY_FIELDS);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
if (ha_alter_info->create_info->used_fields
& HA_CREATE_USED_SEQUENCE) {
ha_alter_info->unsupported_reason = "SEQUENCE";
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
update_thd();
if (!m_prebuilt->table->space) {
ib_senderrf(m_user_thd, IB_LOG_LEVEL_WARN,
ER_TABLESPACE_DISCARDED,
table->s->table_name.str);
}
if (is_valid_trx(!high_level_read_only
&& (ha_alter_info->handler_flags & ALTER_OPTIONS)
&& ha_alter_info->create_info->key_block_size == 0
&& ha_alter_info->create_info->row_type
!= ROW_TYPE_COMPRESSED)) {
ha_alter_info->unsupported_reason =
my_get_err_msg(ER_READ_ONLY_MODE);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
if (ha_alter_info->handler_flags
& ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_INSTANT
| INNOBASE_ALTER_NOREBUILD
| INNOBASE_ALTER_REBUILD
| ALTER_INDEX_IGNORABILITY)) {
if (ha_alter_info->handler_flags
& ALTER_STORED_COLUMN_TYPE) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_COLUMN_TYPE);
}
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
ut_ad(dict_sys.sys_tables_exist());
/* Only support online add foreign key constraint when
check_foreigns is turned off */
if ((ha_alter_info->handler_flags & ALTER_ADD_FOREIGN_KEY)
&& m_prebuilt->trx->check_foreigns) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_FK_CHECK);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
const char* reason_rebuild = NULL;
switch (innodb_instant_alter_column_allowed) {
case 0: /* never */
if ((ha_alter_info->handler_flags
& (ALTER_ADD_STORED_BASE_COLUMN
| ALTER_STORED_COLUMN_ORDER
| ALTER_DROP_STORED_COLUMN))
|| m_prebuilt->table->is_instant()) {
reason_rebuild =
"innodb_instant_alter_column_allowed=never";
innodb_instant_alter_column_allowed_reason:
if (ha_alter_info->handler_flags
& ALTER_RECREATE_TABLE) {
reason_rebuild = NULL;
} else {
ha_alter_info->handler_flags
|= ALTER_RECREATE_TABLE;
ha_alter_info->unsupported_reason
= reason_rebuild;
}
}
break;
case 1: /* add_last */
if ((ha_alter_info->handler_flags
& (ALTER_STORED_COLUMN_ORDER | ALTER_DROP_STORED_COLUMN))
|| m_prebuilt->table->instant) {
reason_rebuild = "innodb_instant_alter_column_allowed="
"add_last";
goto innodb_instant_alter_column_allowed_reason;
}
}
bool need_rebuild = false;
switch (ha_alter_info->handler_flags & ~INNOBASE_INPLACE_IGNORE) {
case ALTER_OPTIONS:
if ((srv_file_per_table && !m_prebuilt->table->space_id)
|| alter_options_need_rebuild(ha_alter_info, table)) {
reason_rebuild = my_get_err_msg(
ER_ALTER_OPERATION_TABLE_OPTIONS_NEED_REBUILD);
ha_alter_info->unsupported_reason = reason_rebuild;
need_rebuild= true;
break;
}
/* fall through */
case 0:
DBUG_RETURN(HA_ALTER_INPLACE_INSTANT);
}
/* InnoDB cannot IGNORE when creating unique indexes. IGNORE
should silently delete some duplicate rows. Our inplace_alter
code will not delete anything from existing indexes. */
if (ha_alter_info->ignore
&& (ha_alter_info->handler_flags
& (ALTER_ADD_PK_INDEX | ALTER_ADD_UNIQUE_INDEX))) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_IGNORE);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
/* DROP PRIMARY KEY is only allowed in combination with ADD
PRIMARY KEY. */
if ((ha_alter_info->handler_flags
& (ALTER_ADD_PK_INDEX | ALTER_DROP_PK_INDEX))
== ALTER_DROP_PK_INDEX) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_NOPK);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
if (ha_alter_info->handler_flags & ALTER_COLUMN_NULLABLE) {
/* If a NOT NULL attribute is going to be removed and
a UNIQUE INDEX on the column had been promoted to an
implicit PRIMARY KEY, the table should be rebuilt by
ALGORITHM=COPY. (Theoretically, we could support
rebuilding by ALGORITHM=INPLACE if a PRIMARY KEY is
going to be added, either explicitly or by promoting
another UNIQUE KEY.) */
const uint my_primary_key = altered_table->s->primary_key;
if (UNIV_UNLIKELY(my_primary_key >= MAX_KEY)
&& !dict_index_is_auto_gen_clust(
dict_table_get_first_index(m_prebuilt->table))) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_PRIMARY_CANT_HAVE_NULL);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
}
/*
InnoDB in different MariaDB versions was generating different mtype
codes for certain types. In some cases the signed/unsigned bit was
generated differently too.
Inplace ALTER would change the mtype/unsigned_flag (to what the
current code generates) without changing the underlying data
represenation, and it might result in data corruption.
Don't do inplace ALTER if mtype/unsigned_flag are wrong.
*/
for (ulint i = 0, icol= 0; i < table->s->fields; i++) {
const Field* field = table->field[i];
const dict_col_t* col = dict_table_get_nth_col(
m_prebuilt->table, icol);
unsigned unsigned_flag;
if (!field->stored_in_db()) {
continue;
}
icol++;
if (col->mtype != get_innobase_type_from_mysql_type(
&unsigned_flag, field)) {
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
if ((col->prtype & DATA_UNSIGNED) != unsigned_flag) {
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
}
ulint n_indexes = UT_LIST_GET_LEN((m_prebuilt->table)->indexes);
/* If InnoDB dictionary and MySQL frm file are not consistent
use "Copy" method. */
if (m_prebuilt->table->dict_frm_mismatch) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_NO_SUCH_INDEX);
ib_push_frm_error(m_user_thd, m_prebuilt->table, altered_table,
n_indexes, true);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
/* '0000-00-00' value isn't allowed for datetime datatype
for newly added column when table is not empty */
if (ha_alter_info->error_if_not_empty
&& m_prebuilt->table->space
&& !innobase_table_is_empty(m_prebuilt->table)) {
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
const bool add_drop_v_cols = !!(ha_alter_info->handler_flags
& (ALTER_ADD_VIRTUAL_COLUMN
| ALTER_DROP_VIRTUAL_COLUMN
| ALTER_VIRTUAL_COLUMN_ORDER));
/* We should be able to do the operation in-place.
See if we can do it online (LOCK=NONE) or without rebuild. */
bool online = true;
const uint fulltext_indexes = innobase_fulltext_exist(altered_table);
/* Fix the key parts. */
for (KEY* new_key = ha_alter_info->key_info_buffer;
new_key < ha_alter_info->key_info_buffer
+ ha_alter_info->key_count;
new_key++) {
/* Do not support adding/droping a virtual column, while
there is a table rebuild caused by adding a new FTS_DOC_ID */
if ((new_key->flags & HA_FULLTEXT) && add_drop_v_cols
&& !DICT_TF2_FLAG_IS_SET(m_prebuilt->table,
DICT_TF2_FTS_HAS_DOC_ID)) {
ha_alter_info->unsupported_reason =
MSG_UNSUPPORTED_ALTER_ONLINE_ON_VIRTUAL_COLUMN;
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
for (KEY_PART_INFO* key_part = new_key->key_part;
key_part < (new_key->key_part
+ new_key->user_defined_key_parts);
key_part++) {
DBUG_ASSERT(key_part->fieldnr
< altered_table->s->fields);
const Create_field* new_field
= ha_alter_info->alter_info->create_list.elem(
key_part->fieldnr);
DBUG_ASSERT(new_field);
key_part->field = altered_table->field[
key_part->fieldnr];
/* In some special cases InnoDB emits "false"
duplicate key errors with NULL key values. Let
us play safe and ensure that we can correctly
print key values even in such cases. */
key_part->null_offset = key_part->field->null_offset();
key_part->null_bit = key_part->field->null_bit;
if (new_field->field) {
/* This is an existing column. */
continue;
}
/* This is an added column. */
DBUG_ASSERT(ha_alter_info->handler_flags
& ALTER_ADD_COLUMN);
/* We cannot replace a hidden FTS_DOC_ID
with a user-visible FTS_DOC_ID. */
if (fulltext_indexes && m_prebuilt->table->fts
&& !my_strcasecmp(
system_charset_info,
key_part->field->field_name.str,
FTS_DOC_ID_COL_NAME)) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_HIDDEN_FTS);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
DBUG_ASSERT((key_part->field->unireg_check
== Field::NEXT_NUMBER)
== !!(key_part->field->flags
& AUTO_INCREMENT_FLAG));
if (key_part->field->flags & AUTO_INCREMENT_FLAG) {
/* We cannot assign AUTO_INCREMENT values
during online or instant ALTER. */
DBUG_ASSERT(key_part->field == altered_table
-> found_next_number_field);
if (ha_alter_info->online) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_AUTOINC);
}
online = false;
need_rebuild = true;
}
if (!key_part->field->stored_in_db()) {
/* Do not support adding index on newly added
virtual column, while there is also a drop
virtual column in the same clause */
if (ha_alter_info->handler_flags
& ALTER_DROP_VIRTUAL_COLUMN) {
ha_alter_info->unsupported_reason =
MSG_UNSUPPORTED_ALTER_ONLINE_ON_VIRTUAL_COLUMN;
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
if (ha_alter_info->online
&& !ha_alter_info->unsupported_reason) {
ha_alter_info->unsupported_reason =
MSG_UNSUPPORTED_ALTER_ONLINE_ON_VIRTUAL_COLUMN;
}
online = false;
}
}
}
DBUG_ASSERT(!m_prebuilt->table->fts
|| (m_prebuilt->table->fts->doc_col <= table->s->fields));
DBUG_ASSERT(!m_prebuilt->table->fts
|| (m_prebuilt->table->fts->doc_col
< dict_table_get_n_user_cols(m_prebuilt->table)));
if (fulltext_indexes && m_prebuilt->table->fts) {
/* FTS index of versioned table has row_end, need rebuild */
if (table->versioned() != altered_table->versioned()) {
need_rebuild= true;
}
/* FULLTEXT indexes are supposed to remain. */
/* Disallow DROP INDEX FTS_DOC_ID_INDEX */
for (uint i = 0; i < ha_alter_info->index_drop_count; i++) {
if (!my_strcasecmp(
system_charset_info,
ha_alter_info->index_drop_buffer[i]->name.str,
FTS_DOC_ID_INDEX_NAME)) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_CHANGE_FTS);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
}
/* InnoDB can have a hidden FTS_DOC_ID_INDEX on a
visible FTS_DOC_ID column as well. Prevent dropping or
renaming the FTS_DOC_ID. */
for (Field** fp = table->field; *fp; fp++) {
if (!((*fp)->flags
& (FIELD_IS_RENAMED | FIELD_IS_DROPPED))) {
continue;
}
if (!my_strcasecmp(
system_charset_info,
(*fp)->field_name.str,
FTS_DOC_ID_COL_NAME)) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_CHANGE_FTS);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
}
}
m_prebuilt->trx->will_lock = true;
/* When changing a NULL column to NOT NULL and specifying a
DEFAULT value, ensure that the DEFAULT expression is a constant.
Also, in ADD COLUMN, for now we only support a
constant DEFAULT expression. */
Field **af = altered_table->field;
bool fts_need_rebuild = false;
need_rebuild = need_rebuild
|| innobase_need_rebuild(ha_alter_info, table);
for (Create_field& cf : ha_alter_info->alter_info->create_list) {
DBUG_ASSERT(cf.field
|| (ha_alter_info->handler_flags
& ALTER_ADD_COLUMN));
if (const Field* f = cf.field) {
/* An AUTO_INCREMENT attribute can only
be added to an existing column by ALGORITHM=COPY,
but we can remove the attribute. */
ut_ad((*af)->unireg_check != Field::NEXT_NUMBER
|| f->unireg_check == Field::NEXT_NUMBER);
if (!f->real_maybe_null() || (*af)->real_maybe_null())
goto next_column;
/* We are changing an existing column
from NULL to NOT NULL. */
DBUG_ASSERT(ha_alter_info->handler_flags
& ALTER_COLUMN_NOT_NULLABLE);
/* Virtual columns are never NOT NULL. */
DBUG_ASSERT(f->stored_in_db());
switch ((*af)->type()) {
case MYSQL_TYPE_TIMESTAMP:
case MYSQL_TYPE_TIMESTAMP2:
/* Inserting NULL into a TIMESTAMP column
would cause the DEFAULT value to be
replaced. Ensure that the DEFAULT
expression is not changing during
ALTER TABLE. */
if (!(*af)->default_value
&& (*af)->is_real_null()) {
/* No DEFAULT value is
specified. We can report
errors for any NULL values for
the TIMESTAMP. */
goto next_column;
}
break;
default:
/* For any other data type, NULL
values are not converted. */
goto next_column;
}
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_NOT_NULL);
} else if (!is_non_const_value(*af)
&& set_default_value(*af)) {
if (fulltext_indexes > 1
&& !my_strcasecmp(system_charset_info,
(*af)->field_name.str,
FTS_DOC_ID_COL_NAME)) {
/* If a hidden FTS_DOC_ID column exists
(because of FULLTEXT INDEX), it cannot
be replaced with a user-created one
except when using ALGORITHM=COPY. */
ha_alter_info->unsupported_reason =
my_get_err_msg(ER_INNODB_FT_LIMIT);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
goto next_column;
}
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
next_column:
af++;
}
const bool supports_instant = instant_alter_column_possible(
*m_prebuilt->table, ha_alter_info, table, altered_table,
is_innodb_strict_mode());
if (add_drop_v_cols) {
ulonglong flags = ha_alter_info->handler_flags;
/* TODO: uncomment the flags below, once we start to
support them */
flags &= ~(ALTER_ADD_VIRTUAL_COLUMN
| ALTER_DROP_VIRTUAL_COLUMN
| ALTER_VIRTUAL_COLUMN_ORDER
| ALTER_VIRTUAL_GCOL_EXPR
| ALTER_COLUMN_VCOL
/*
| ALTER_ADD_STORED_BASE_COLUMN
| ALTER_DROP_STORED_COLUMN
| ALTER_STORED_COLUMN_ORDER
| ALTER_ADD_UNIQUE_INDEX
*/
| ALTER_ADD_NON_UNIQUE_NON_PRIM_INDEX
| ALTER_DROP_NON_UNIQUE_NON_PRIM_INDEX
| ALTER_INDEX_ORDER);
if (supports_instant) {
flags &= ~(ALTER_DROP_STORED_COLUMN
#if 0 /* MDEV-17468: remove check_v_col_in_order() and fix the code */
| ALTER_ADD_STORED_BASE_COLUMN
#endif
| ALTER_STORED_COLUMN_ORDER);
}
if (flags != 0
|| IF_PARTITIONING((altered_table->s->partition_info_str
&& altered_table->s->partition_info_str_len), 0)
|| (!check_v_col_in_order(
this->table, altered_table, ha_alter_info))) {
ha_alter_info->unsupported_reason =
MSG_UNSUPPORTED_ALTER_ONLINE_ON_VIRTUAL_COLUMN;
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
}
if (supports_instant && !(ha_alter_info->handler_flags
& INNOBASE_ALTER_NOREBUILD)) {
DBUG_RETURN(HA_ALTER_INPLACE_INSTANT);
}
if (need_rebuild
&& (fulltext_indexes
|| innobase_spatial_exist(altered_table)
|| innobase_indexed_virtual_exist(altered_table))) {
/* If the table already contains fulltext indexes,
refuse to rebuild the table natively altogether. */
if (fulltext_indexes > 1) {
cannot_create_many_fulltext_index:
ha_alter_info->unsupported_reason =
my_get_err_msg(ER_INNODB_FT_LIMIT);
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
if (!online || !ha_alter_info->online
|| ha_alter_info->unsupported_reason != reason_rebuild) {
/* Either LOCK=NONE was not requested, or we already
gave specific reason to refuse it. */
} else if (fulltext_indexes) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_FTS);
} else if (innobase_spatial_exist(altered_table)) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_GIS);
} else {
/* MDEV-14341 FIXME: Remove this limitation. */
ha_alter_info->unsupported_reason =
"online rebuild with indexed virtual columns";
}
online = false;
}
static constexpr const char *not_implemented
= "Not implemented for system-versioned operations";
if (ha_alter_info->handler_flags
& ALTER_ADD_NON_UNIQUE_NON_PRIM_INDEX) {
/* ADD FULLTEXT|SPATIAL INDEX requires a lock.
We could do ADD FULLTEXT INDEX without a lock if the
table already contains an FTS_DOC_ID column, but in
that case we would have to apply the modification log
to the full-text indexes.
We could also do ADD SPATIAL INDEX by implementing
row_log_apply() for it. */
bool add_fulltext = false;
for (uint i = 0; i < ha_alter_info->index_add_count; i++) {
const KEY* key =
&ha_alter_info->key_info_buffer[
ha_alter_info->index_add_buffer[i]];
if (key->flags & HA_FULLTEXT) {
DBUG_ASSERT(!(key->flags & HA_KEYFLAG_MASK
& ~(HA_FULLTEXT
| HA_PACK_KEY
| HA_GENERATED_KEY
| HA_BINARY_PACK_KEY)));
if (add_fulltext) {
goto cannot_create_many_fulltext_index;
}
if (altered_table->versioned()) {
ha_alter_info->unsupported_reason
= not_implemented;
DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
}
add_fulltext = true;
if (ha_alter_info->online
&& !ha_alter_info->unsupported_reason) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_FTS);
}
online = false;
/* Full text search index exists, check
whether the table already has DOC ID column.
If not, InnoDB have to rebuild the table to
add a Doc ID hidden column and change
primary index. */
ulint fts_doc_col_no;
ulint num_v = 0;
fts_need_rebuild =
!innobase_fts_check_doc_id_col(
m_prebuilt->table,
altered_table,
&fts_doc_col_no, &num_v, true);
}
if (online && (key->flags & HA_SPATIAL)) {
if (ha_alter_info->online) {
ha_alter_info->unsupported_reason = my_get_err_msg(
ER_ALTER_OPERATION_NOT_SUPPORTED_REASON_GIS);
}
online = false;
}
}
}
if (m_prebuilt->table->is_stats_table()) {
if (ha_alter_info->online) {
ha_alter_info->unsupported_reason =
table_share->table_name.str;
}
online= false;
}
// FIXME: implement Online DDL for system-versioned operations
if (ha_alter_info->handler_flags & INNOBASE_ALTER_VERSIONED_REBUILD) {
if (ha_alter_info->online) {
ha_alter_info->unsupported_reason = not_implemented;
}
online = false;
}
if ((need_rebuild && !supports_instant) || fts_need_rebuild) {
ha_alter_info->handler_flags |= ALTER_RECREATE_TABLE;
DBUG_RETURN(online
? HA_ALTER_INPLACE_COPY_NO_LOCK
: HA_ALTER_INPLACE_COPY_LOCK);
}
if (ha_alter_info->unsupported_reason) {
} else if (ha_alter_info->handler_flags & INNOBASE_ONLINE_CREATE) {
ha_alter_info->unsupported_reason = "ADD INDEX";
} else {
ha_alter_info->unsupported_reason = "DROP INDEX";
}
DBUG_RETURN(online
? HA_ALTER_INPLACE_NOCOPY_NO_LOCK
: HA_ALTER_INPLACE_NOCOPY_LOCK);
}
/*************************************************************//**
Initialize the dict_foreign_t structure with supplied info
@return true if added, false if duplicate foreign->id */
static MY_ATTRIBUTE((nonnull(1,3,5,7)))
bool
innobase_init_foreign(
/*==================*/
dict_foreign_t* foreign, /*!< in/out: structure to
initialize */
const char* constraint_name, /*!< in/out: constraint name if
exists */
dict_table_t* table, /*!< in: foreign table */
dict_index_t* index, /*!< in: foreign key index */
const char** column_names, /*!< in: foreign key column
names */
ulint num_field, /*!< in: number of columns */
const char* referenced_table_name, /*!< in: referenced table
name */
dict_table_t* referenced_table, /*!< in: referenced table */
dict_index_t* referenced_index, /*!< in: referenced index */
const char** referenced_column_names,/*!< in: referenced column
names */
ulint referenced_num_field) /*!< in: number of referenced
columns */
{
ut_ad(dict_sys.locked());
if (constraint_name) {
ulint db_len;
/* Catenate 'databasename/' to the constraint name specified
by the user: we conceive the constraint as belonging to the
same MySQL 'database' as the table itself. We store the name
to foreign->id. */
db_len = dict_get_db_name_len(table->name.m_name);
foreign->id = static_cast<char*>(mem_heap_alloc(
foreign->heap, db_len + strlen(constraint_name) + 2));
memcpy(foreign->id, table->name.m_name, db_len);
foreign->id[db_len] = '/';
strcpy(foreign->id + db_len + 1, constraint_name);
/* Check if any existing foreign key has the same id,
this is needed only if user supplies the constraint name */
if (table->foreign_set.find(foreign)
!= table->foreign_set.end()) {
return(false);
}
}
foreign->foreign_table = table;
foreign->foreign_table_name = mem_heap_strdup(
foreign->heap, table->name.m_name);
dict_mem_foreign_table_name_lookup_set(foreign, TRUE);
foreign->foreign_index = index;
foreign->n_fields = static_cast<unsigned>(num_field)
& dict_index_t::MAX_N_FIELDS;
foreign->foreign_col_names = static_cast<const char**>(
mem_heap_alloc(foreign->heap, num_field * sizeof(void*)));
for (ulint i = 0; i < foreign->n_fields; i++) {
foreign->foreign_col_names[i] = mem_heap_strdup(
foreign->heap, column_names[i]);
}
foreign->referenced_index = referenced_index;
foreign->referenced_table = referenced_table;
foreign->referenced_table_name = mem_heap_strdup(
foreign->heap, referenced_table_name);
dict_mem_referenced_table_name_lookup_set(foreign, TRUE);
foreign->referenced_col_names = static_cast<const char**>(
mem_heap_alloc(foreign->heap,
referenced_num_field * sizeof(void*)));
for (ulint i = 0; i < foreign->n_fields; i++) {
foreign->referenced_col_names[i]
= mem_heap_strdup(foreign->heap,
referenced_column_names[i]);
}
return(true);
}
/*************************************************************//**
Check whether the foreign key options is legit
@return true if it is */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_check_fk_option(
/*=====================*/
const dict_foreign_t* foreign) /*!< in: foreign key */
{
if (!foreign->foreign_index) {
return(true);
}
if (foreign->type & (foreign->UPDATE_SET_NULL
| foreign->DELETE_SET_NULL)) {
for (ulint j = 0; j < foreign->n_fields; j++) {
if ((dict_index_get_nth_col(
foreign->foreign_index, j)->prtype)
& DATA_NOT_NULL) {
/* It is not sensible to define
SET NULL if the column is not
allowed to be NULL! */
return(false);
}
}
}
return(true);
}
/*************************************************************//**
Set foreign key options
@return true if successfully set */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_set_foreign_key_option(
/*============================*/
dict_foreign_t* foreign, /*!< in:InnoDB Foreign key */
Foreign_key* fk_key) /*!< in: Foreign key info from
MySQL */
{
ut_ad(!foreign->type);
switch (fk_key->delete_opt) {
case FK_OPTION_NO_ACTION:
case FK_OPTION_RESTRICT:
case FK_OPTION_SET_DEFAULT:
foreign->type = foreign->DELETE_NO_ACTION;
break;
case FK_OPTION_CASCADE:
foreign->type = foreign->DELETE_CASCADE;
break;
case FK_OPTION_SET_NULL:
foreign->type = foreign->DELETE_SET_NULL;
break;
case FK_OPTION_UNDEF:
break;
}
#if defined __GNUC__ && !defined __clang__ && __GNUC__ < 6
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wconversion"
#endif
switch (fk_key->update_opt) {
case FK_OPTION_NO_ACTION:
case FK_OPTION_RESTRICT:
case FK_OPTION_SET_DEFAULT:
foreign->type |= foreign->UPDATE_NO_ACTION;
break;
case FK_OPTION_CASCADE:
foreign->type |= foreign->UPDATE_CASCADE;
break;
case FK_OPTION_SET_NULL:
foreign->type |= foreign->UPDATE_SET_NULL;
break;
case FK_OPTION_UNDEF:
break;
}
#if defined __GNUC__ && !defined __clang__ && __GNUC__ < 6
# pragma GCC diagnostic pop
#endif
return(innobase_check_fk_option(foreign));
}
/*******************************************************************//**
Check if a foreign key constraint can make use of an index
that is being created.
@param[in] col_names column names
@param[in] n_cols number of columns
@param[in] keys index information
@param[in] add indexes being created
@return useable index, or NULL if none found */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
const KEY*
innobase_find_equiv_index(
const char*const* col_names,
uint n_cols,
const KEY* keys,
span<uint> add)
{
for (span<uint>::iterator it = add.begin(), end = add.end(); it != end;
++it) {
const KEY* key = &keys[*it];
if (key->user_defined_key_parts < n_cols
|| key->flags & HA_SPATIAL) {
no_match:
continue;
}
for (uint j = 0; j < n_cols; j++) {
const KEY_PART_INFO& key_part = key->key_part[j];
uint32 col_len
= key_part.field->pack_length();
/* Any index on virtual columns cannot be used
for reference constraint */
if (!key_part.field->stored_in_db()) {
goto no_match;
}
/* The MySQL pack length contains 1 or 2 bytes
length field for a true VARCHAR. */
if (key_part.field->type() == MYSQL_TYPE_VARCHAR) {
col_len -= static_cast<const Field_varstring*>(
key_part.field)->length_bytes;
}
if (key_part.length < col_len) {
/* Column prefix indexes cannot be
used for FOREIGN KEY constraints. */
goto no_match;
}
if (innobase_strcasecmp(col_names[j],
key_part.field->field_name.str)) {
/* Name mismatch */
goto no_match;
}
}
return(key);
}
return(NULL);
}
/*************************************************************//**
Find an index whose first fields are the columns in the array
in the same order and is not marked for deletion
@return matching index, NULL if not found */
static MY_ATTRIBUTE((nonnull(1,4), warn_unused_result))
dict_index_t*
innobase_find_fk_index(
/*===================*/
dict_table_t* table, /*!< in: table */
const char** col_names,
/*!< in: column names, or NULL
to use table->col_names */
span<dict_index_t*> drop_index,
/*!< in: indexes to be dropped */
const char** columns,/*!< in: array of column names */
ulint n_cols) /*!< in: number of columns */
{
dict_index_t* index;
index = dict_table_get_first_index(table);
while (index != NULL) {
if (dict_foreign_qualify_index(table, col_names, columns,
n_cols, index, NULL, true, 0,
NULL, NULL, NULL)
&& std::find(drop_index.begin(), drop_index.end(), index)
== drop_index.end()) {
return index;
}
index = dict_table_get_next_index(index);
}
return(NULL);
}
/** Check whether given column is a base of stored column.
@param[in] col_name column name
@param[in] table table
@param[in] s_cols list of stored columns
@return true if the given column is a base of stored column,else false. */
static
bool
innobase_col_check_fk(
const char* col_name,
const dict_table_t* table,
dict_s_col_list* s_cols)
{
dict_s_col_list::const_iterator it;
for (it = s_cols->begin(); it != s_cols->end(); ++it) {
for (ulint j = it->num_base; j--; ) {
if (!strcmp(col_name, dict_table_get_col_name(
table, it->base_col[j]->ind))) {
return(true);
}
}
}
return(false);
}
/** Check whether the foreign key constraint is on base of any stored columns.
@param[in] foreign Foriegn key constraing information
@param[in] table table to which the foreign key objects
to be added
@param[in] s_cols list of stored column information in the table.
@return true if yes, otherwise false. */
static
bool
innobase_check_fk_stored(
const dict_foreign_t* foreign,
const dict_table_t* table,
dict_s_col_list* s_cols)
{
ulint type = foreign->type;
type &= ~(foreign->DELETE_NO_ACTION
| foreign->UPDATE_NO_ACTION);
if (type == 0 || s_cols == NULL) {
return(false);
}
for (ulint i = 0; i < foreign->n_fields; i++) {
if (innobase_col_check_fk(
foreign->foreign_col_names[i], table, s_cols)) {
return(true);
}
}
return(false);
}
/** Create InnoDB foreign key structure from MySQL alter_info
@param[in] ha_alter_info alter table info
@param[in] table_share TABLE_SHARE
@param[in] table table object
@param[in] col_names column names, or NULL to use
table->col_names
@param[in] drop_index indexes to be dropped
@param[in] n_drop_index size of drop_index
@param[out] add_fk foreign constraint added
@param[out] n_add_fk number of foreign constraints
added
@param[in] trx user transaction
@param[in] s_cols list of stored column information
@retval true if successful
@retval false on error (will call my_error()) */
static MY_ATTRIBUTE((nonnull(1,2,3,7,8), warn_unused_result))
bool
innobase_get_foreign_key_info(
Alter_inplace_info*
ha_alter_info,
const TABLE_SHARE*
table_share,
dict_table_t* table,
const char** col_names,
dict_index_t** drop_index,
ulint n_drop_index,
dict_foreign_t**add_fk,
ulint* n_add_fk,
const trx_t* trx,
dict_s_col_list*s_cols)
{
dict_table_t* referenced_table = NULL;
char* referenced_table_name = NULL;
ulint num_fk = 0;
Alter_info* alter_info = ha_alter_info->alter_info;
const CHARSET_INFO* cs = thd_charset(trx->mysql_thd);
char db_name[MAX_DATABASE_NAME_LEN + 1];
char t_name[MAX_TABLE_NAME_LEN + 1];
static_assert(MAX_TABLE_NAME_LEN == MAX_DATABASE_NAME_LEN, "");
DBUG_ENTER("innobase_get_foreign_key_info");
*n_add_fk = 0;
for (Key& key : alter_info->key_list) {
if (key.type != Key::FOREIGN_KEY || key.old) {
continue;
}
const char* column_names[MAX_NUM_FK_COLUMNS];
dict_index_t* index = NULL;
const char* referenced_column_names[MAX_NUM_FK_COLUMNS];
dict_index_t* referenced_index = NULL;
ulint num_col = 0;
ulint referenced_num_col = 0;
bool correct_option;
Foreign_key* fk_key = static_cast<Foreign_key*>(&key);
if (fk_key->columns.elements > 0) {
ulint i = 0;
/* Get all the foreign key column info for the
current table */
for (const Key_part_spec& column : fk_key->columns) {
column_names[i] = column.field_name.str;
ut_ad(i < MAX_NUM_FK_COLUMNS);
i++;
}
index = innobase_find_fk_index(
table, col_names,
span<dict_index_t*>(drop_index, n_drop_index),
column_names, i);
/* MySQL would add a index in the creation
list if no such index for foreign table,
so we have to use DBUG_EXECUTE_IF to simulate
the scenario */
DBUG_EXECUTE_IF("innodb_test_no_foreign_idx",
index = NULL;);
/* Check whether there exist such
index in the the index create clause */
if (!index && !innobase_find_equiv_index(
column_names, static_cast<uint>(i),
ha_alter_info->key_info_buffer,
span<uint>(ha_alter_info->index_add_buffer,
ha_alter_info->index_add_count))) {
my_error(
ER_FK_NO_INDEX_CHILD,
MYF(0),
fk_key->name.str
? fk_key->name.str : "",
table_share->table_name.str);
goto err_exit;
}
num_col = i;
}
add_fk[num_fk] = dict_mem_foreign_create();
LEX_CSTRING t = innodb_convert_name(cs, fk_key->ref_table,
t_name);
LEX_CSTRING d = fk_key->ref_db.str
? innodb_convert_name(cs, fk_key->ref_db, db_name)
: LEX_CSTRING{table->name.m_name, table->name.dblen()};
dict_sys.lock(SRW_LOCK_CALL);
referenced_table_name = dict_table_lookup(
d, t, &referenced_table, add_fk[num_fk]->heap);
/* Test the case when referenced_table failed to
open, if trx->check_foreigns is not set, we should
still be able to add the foreign key */
DBUG_EXECUTE_IF("innodb_test_open_ref_fail",
referenced_table = NULL;);
if (!referenced_table && trx->check_foreigns) {
my_error(ER_FK_CANNOT_OPEN_PARENT,
MYF(0), fk_key->ref_table.str);
goto err_exit_unlock;
}
if (fk_key->ref_columns.elements > 0) {
ulint i = 0;
for (Key_part_spec &column : fk_key->ref_columns) {
referenced_column_names[i] =
column.field_name.str;
ut_ad(i < MAX_NUM_FK_COLUMNS);
i++;
}
if (referenced_table) {
referenced_index =
dict_foreign_find_index(
referenced_table, 0,
referenced_column_names,
i, index,
TRUE, FALSE,
NULL, NULL, NULL);
DBUG_EXECUTE_IF(
"innodb_test_no_reference_idx",
referenced_index = NULL;);
/* Check whether there exist such
index in the the index create clause */
if (!referenced_index) {
my_error(ER_FK_NO_INDEX_PARENT, MYF(0),
fk_key->name.str
? fk_key->name.str : "",
fk_key->ref_table.str);
goto err_exit_unlock;
}
} else {
ut_a(!trx->check_foreigns);
}
referenced_num_col = i;
} else {
/* Not possible to add a foreign key without a
referenced column */
my_error(ER_CANNOT_ADD_FOREIGN, MYF(0),
fk_key->ref_table.str);
goto err_exit_unlock;
}
if (!innobase_init_foreign(
add_fk[num_fk], fk_key->name.str,
table, index, column_names,
num_col, referenced_table_name,
referenced_table, referenced_index,
referenced_column_names, referenced_num_col)) {
my_error(
ER_DUP_CONSTRAINT_NAME,
MYF(0),
"FOREIGN KEY", add_fk[num_fk]->id);
goto err_exit_unlock;
}
dict_sys.unlock();
correct_option = innobase_set_foreign_key_option(
add_fk[num_fk], fk_key);
DBUG_EXECUTE_IF("innodb_test_wrong_fk_option",
correct_option = false;);
if (!correct_option) {
my_error(ER_FK_INCORRECT_OPTION,
MYF(0),
table_share->table_name.str,
add_fk[num_fk]->id);
goto err_exit;
}
if (innobase_check_fk_stored(
add_fk[num_fk], table, s_cols)) {
my_printf_error(
HA_ERR_UNSUPPORTED,
"Cannot add foreign key on the base column "
"of stored column", MYF(0));
goto err_exit;
}
num_fk++;
}
*n_add_fk = num_fk;
DBUG_RETURN(true);
err_exit_unlock:
dict_sys.unlock();
err_exit:
for (ulint i = 0; i <= num_fk; i++) {
if (add_fk[i]) {
dict_foreign_free(add_fk[i]);
}
}
DBUG_RETURN(false);
}
/*************************************************************//**
Copies an InnoDB column to a MySQL field. This function is
adapted from row_sel_field_store_in_mysql_format(). */
static
void
innobase_col_to_mysql(
/*==================*/
const dict_col_t* col, /*!< in: InnoDB column */
const uchar* data, /*!< in: InnoDB column data */
ulint len, /*!< in: length of data, in bytes */
Field* field) /*!< in/out: MySQL field */
{
uchar* ptr;
uchar* dest = field->ptr;
ulint flen = field->pack_length();
switch (col->mtype) {
case DATA_INT:
ut_ad(len == flen);
/* Convert integer data from Innobase to little-endian
format, sign bit restored to normal */
for (ptr = dest + len; ptr != dest; ) {
*--ptr = *data++;
}
if (!(col->prtype & DATA_UNSIGNED)) {
((byte*) dest)[len - 1] ^= 0x80;
}
break;
case DATA_VARCHAR:
case DATA_VARMYSQL:
case DATA_BINARY:
field->reset();
if (field->type() == MYSQL_TYPE_VARCHAR) {
/* This is a >= 5.0.3 type true VARCHAR. Store the
length of the data to the first byte or the first
two bytes of dest. */
dest = row_mysql_store_true_var_len(
dest, len, flen - field->key_length());
}
/* Copy the actual data */
memcpy(dest, data, len);
break;
case DATA_GEOMETRY:
case DATA_BLOB:
/* Skip MySQL BLOBs when reporting an erroneous row
during index creation or table rebuild. */
field->set_null();
break;
#ifdef UNIV_DEBUG
case DATA_MYSQL:
ut_ad(flen >= len);
ut_ad(col->mbmaxlen >= col->mbminlen);
memcpy(dest, data, len);
break;
default:
case DATA_SYS_CHILD:
case DATA_SYS:
/* These column types should never be shipped to MySQL. */
ut_ad(0);
/* fall through */
case DATA_FLOAT:
case DATA_DOUBLE:
case DATA_DECIMAL:
/* Above are the valid column types for MySQL data. */
ut_ad(flen == len);
/* fall through */
case DATA_FIXBINARY:
case DATA_CHAR:
/* We may have flen > len when there is a shorter
prefix on the CHAR and BINARY column. */
ut_ad(flen >= len);
#else /* UNIV_DEBUG */
default:
#endif /* UNIV_DEBUG */
memcpy(dest, data, len);
}
}
/*************************************************************//**
Copies an InnoDB record to table->record[0]. */
void
innobase_rec_to_mysql(
/*==================*/
struct TABLE* table, /*!< in/out: MySQL table */
const rec_t* rec, /*!< in: record */
const dict_index_t* index, /*!< in: index */
const rec_offs* offsets)/*!< in: rec_get_offsets(
rec, index, ...) */
{
uint n_fields = table->s->fields;
ut_ad(n_fields == dict_table_get_n_user_cols(index->table)
- !!(DICT_TF2_FLAG_IS_SET(index->table,
DICT_TF2_FTS_HAS_DOC_ID)));
for (uint i = 0; i < n_fields; i++) {
Field* field = table->field[i];
ulint ipos;
ulint ilen;
const uchar* ifield;
ulint prefix_col;
field->reset();
ipos = dict_index_get_nth_col_or_prefix_pos(
index, i, true, false, &prefix_col);
if (ipos == ULINT_UNDEFINED
|| rec_offs_nth_extern(offsets, ipos)) {
null_field:
field->set_null();
continue;
}
ifield = rec_get_nth_cfield(rec, index, offsets, ipos, &ilen);
/* Assign the NULL flag */
if (ilen == UNIV_SQL_NULL) {
ut_ad(field->real_maybe_null());
goto null_field;
}
field->set_notnull();
innobase_col_to_mysql(
dict_field_get_col(
dict_index_get_nth_field(index, ipos)),
ifield, ilen, field);
}
}
/*************************************************************//**
Copies an InnoDB index entry to table->record[0].
This is used in preparation for print_keydup_error() from
inline add index */
void
innobase_fields_to_mysql(
/*=====================*/
struct TABLE* table, /*!< in/out: MySQL table */
const dict_index_t* index, /*!< in: InnoDB index */
const dfield_t* fields) /*!< in: InnoDB index fields */
{
uint n_fields = table->s->fields;
ulint num_v = 0;
ut_ad(n_fields == dict_table_get_n_user_cols(index->table)
+ dict_table_get_n_v_cols(index->table)
- !!(DICT_TF2_FLAG_IS_SET(index->table,
DICT_TF2_FTS_HAS_DOC_ID)));
for (uint i = 0; i < n_fields; i++) {
Field* field = table->field[i];
ulint ipos;
ulint prefix_col;
field->reset();
const bool is_v = !field->stored_in_db();
const ulint col_n = is_v ? num_v++ : i - num_v;
ipos = dict_index_get_nth_col_or_prefix_pos(
index, col_n, true, is_v, &prefix_col);
if (ipos == ULINT_UNDEFINED
|| dfield_is_ext(&fields[ipos])
|| dfield_is_null(&fields[ipos])) {
field->set_null();
} else {
field->set_notnull();
const dfield_t* df = &fields[ipos];
innobase_col_to_mysql(
dict_field_get_col(
dict_index_get_nth_field(index, ipos)),
static_cast<const uchar*>(dfield_get_data(df)),
dfield_get_len(df), field);
}
}
}
/*************************************************************//**
Copies an InnoDB row to table->record[0].
This is used in preparation for print_keydup_error() from
row_log_table_apply() */
void
innobase_row_to_mysql(
/*==================*/
struct TABLE* table, /*!< in/out: MySQL table */
const dict_table_t* itab, /*!< in: InnoDB table */
const dtuple_t* row) /*!< in: InnoDB row */
{
uint n_fields = table->s->fields;
ulint num_v = 0;
/* The InnoDB row may contain an extra FTS_DOC_ID column at the end. */
ut_ad(row->n_fields == dict_table_get_n_cols(itab));
ut_ad(n_fields == row->n_fields - DATA_N_SYS_COLS
+ dict_table_get_n_v_cols(itab)
- !!(DICT_TF2_FLAG_IS_SET(itab, DICT_TF2_FTS_HAS_DOC_ID)));
for (uint i = 0; i < n_fields; i++) {
Field* field = table->field[i];
field->reset();
if (!field->stored_in_db()) {
/* Virtual column are not stored in InnoDB table, so
skip it */
num_v++;
continue;
}
const dfield_t* df = dtuple_get_nth_field(row, i - num_v);
if (dfield_is_ext(df) || dfield_is_null(df)) {
field->set_null();
} else {
field->set_notnull();
innobase_col_to_mysql(
dict_table_get_nth_col(itab, i - num_v),
static_cast<const uchar*>(dfield_get_data(df)),
dfield_get_len(df), field);
}
}
if (table->vfield) {
MY_BITMAP* old_read_set = tmp_use_all_columns(table, &table->read_set);
table->update_virtual_fields(table->file, VCOL_UPDATE_FOR_READ);
tmp_restore_column_map(&table->read_set, old_read_set);
}
}
/*******************************************************************//**
This function checks that index keys are sensible.
@return 0 or error number */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
int
innobase_check_index_keys(
/*======================*/
const Alter_inplace_info* info,
/*!< in: indexes to be created or dropped */
const dict_table_t* innodb_table)
/*!< in: Existing indexes */
{
for (uint key_num = 0; key_num < info->index_add_count;
key_num++) {
const KEY& key = info->key_info_buffer[
info->index_add_buffer[key_num]];
/* Check that the same index name does not appear
twice in indexes to be created. */
for (ulint i = 0; i < key_num; i++) {
const KEY& key2 = info->key_info_buffer[
info->index_add_buffer[i]];
if (0 == strcmp(key.name.str, key2.name.str)) {
my_error(ER_WRONG_NAME_FOR_INDEX, MYF(0),
key.name.str);
return(ER_WRONG_NAME_FOR_INDEX);
}
}
/* Check that the same index name does not already exist. */
const dict_index_t* index;
for (index = dict_table_get_first_index(innodb_table);
index; index = dict_table_get_next_index(index)) {
if (index->is_committed()
&& !strcmp(key.name.str, index->name)) {
break;
}
}
/* Now we are in a situation where we have "ADD INDEX x"
and an index by the same name already exists. We have 4
possible cases:
1. No further clauses for an index x are given. Should reject
the operation.
2. "DROP INDEX x" is given. Should allow the operation.
3. "RENAME INDEX x TO y" is given. Should allow the operation.
4. "DROP INDEX x, RENAME INDEX x TO y" is given. Should allow
the operation, since no name clash occurs. In this particular
case MySQL cancels the operation without calling InnoDB
methods. */
if (index) {
/* If a key by the same name is being created and
dropped, the name clash is OK. */
for (uint i = 0; i < info->index_drop_count;
i++) {
const KEY* drop_key
= info->index_drop_buffer[i];
if (0 == strcmp(key.name.str,
drop_key->name.str)) {
goto name_ok;
}
}
for (const Alter_inplace_info::Rename_key_pair& pair :
info->rename_keys) {
if (0 == strcmp(key.name.str,
pair.old_key->name.str)) {
goto name_ok;
}
}
my_error(ER_WRONG_NAME_FOR_INDEX, MYF(0),
key.name.str);
return(ER_WRONG_NAME_FOR_INDEX);
}
name_ok:
for (ulint i = 0; i < key.user_defined_key_parts; i++) {
const KEY_PART_INFO& key_part1
= key.key_part[i];
const Field* field
= key_part1.field;
unsigned is_unsigned;
switch (get_innobase_type_from_mysql_type(
&is_unsigned, field)) {
default:
break;
case DATA_INT:
case DATA_FLOAT:
case DATA_DOUBLE:
case DATA_DECIMAL:
/* Check that MySQL does not try to
create a column prefix index field on
an inappropriate data type. */
if (field->type() == MYSQL_TYPE_VARCHAR) {
if (key_part1.length
>= field->pack_length()
- ((Field_varstring*) field)
->length_bytes) {
break;
}
} else {
if (key_part1.length
>= field->pack_length()) {
break;
}
}
my_error(ER_WRONG_KEY_COLUMN, MYF(0), "InnoDB",
field->field_name.str);
return(ER_WRONG_KEY_COLUMN);
}
/* Check that the same column does not appear
twice in the index. */
for (ulint j = 0; j < i; j++) {
const KEY_PART_INFO& key_part2
= key.key_part[j];
if (key_part1.fieldnr != key_part2.fieldnr) {
continue;
}
my_error(ER_WRONG_KEY_COLUMN, MYF(0), "InnoDB",
field->field_name.str);
return(ER_WRONG_KEY_COLUMN);
}
}
}
return(0);
}
/** Create index field definition for key part
@param[in] new_clustered true if alter is generating a new clustered
index
@param[in] altered_table MySQL table that is being altered
@param[in] key_part MySQL key definition
@param[out] index_field index field definition for key_part */
static MY_ATTRIBUTE((nonnull))
void
innobase_create_index_field_def(
bool new_clustered,
const TABLE* altered_table,
const KEY_PART_INFO* key_part,
index_field_t* index_field)
{
const Field* field;
unsigned is_unsigned;
unsigned num_v = 0;
DBUG_ENTER("innobase_create_index_field_def");
field = new_clustered
? altered_table->field[key_part->fieldnr]
: key_part->field;
for (ulint i = 0; i < key_part->fieldnr; i++) {
if (!altered_table->field[i]->stored_in_db()) {
num_v++;
}
}
auto col_type = get_innobase_type_from_mysql_type(
&is_unsigned, field);
if ((index_field->is_v_col = !field->stored_in_db())) {
index_field->col_no = num_v;
} else {
index_field->col_no = key_part->fieldnr - num_v;
}
index_field->descending= !!(key_part->key_part_flag & HA_REVERSE_SORT);
if (DATA_LARGE_MTYPE(col_type)
|| (key_part->length < field->pack_length()
&& field->type() != MYSQL_TYPE_VARCHAR)
|| (field->type() == MYSQL_TYPE_VARCHAR
&& key_part->length < field->pack_length()
- ((Field_varstring*) field)->length_bytes)) {
index_field->prefix_len = key_part->length;
} else {
index_field->prefix_len = 0;
}
DBUG_VOID_RETURN;
}
/** Create index definition for key
@param[in] altered_table MySQL table that is being altered
@param[in] keys key definitions
@param[in] key_number MySQL key number
@param[in] new_clustered true if generating a new clustered
index on the table
@param[in] key_clustered true if this is the new clustered index
@param[out] index index definition
@param[in] heap heap where memory is allocated */
static MY_ATTRIBUTE((nonnull))
void
innobase_create_index_def(
const TABLE* altered_table,
const KEY* keys,
ulint key_number,
bool new_clustered,
bool key_clustered,
index_def_t* index,
mem_heap_t* heap)
{
const KEY* key = &keys[key_number];
ulint i;
ulint n_fields = key->user_defined_key_parts;
DBUG_ENTER("innobase_create_index_def");
DBUG_ASSERT(!key_clustered || new_clustered);
index->fields = static_cast<index_field_t*>(
mem_heap_alloc(heap, n_fields * sizeof *index->fields));
index->parser = NULL;
index->key_number = key_number;
index->n_fields = n_fields;
index->name = mem_heap_strdup(heap, key->name.str);
index->rebuild = new_clustered;
if (key_clustered) {
DBUG_ASSERT(!(key->flags & (HA_FULLTEXT | HA_SPATIAL)));
DBUG_ASSERT(key->flags & HA_NOSAME);
index->ind_type = DICT_CLUSTERED | DICT_UNIQUE;
} else if (key->flags & HA_FULLTEXT) {
DBUG_ASSERT(!(key->flags & (HA_SPATIAL | HA_NOSAME)));
DBUG_ASSERT(!(key->flags & HA_KEYFLAG_MASK
& ~(HA_FULLTEXT
| HA_PACK_KEY
| HA_BINARY_PACK_KEY)));
index->ind_type = DICT_FTS;
/* Note: key->parser is only parser name,
we need to get parser from altered_table instead */
if (key->flags & HA_USES_PARSER) {
for (ulint j = 0; j < altered_table->s->keys; j++) {
if (!strcmp(altered_table->key_info[j].name.str,
key->name.str)) {
ut_ad(altered_table->key_info[j].flags
& HA_USES_PARSER);
plugin_ref parser =
altered_table->key_info[j].parser;
index->parser =
static_cast<st_mysql_ftparser*>(
plugin_decl(parser)->info);
break;
}
}
DBUG_EXECUTE_IF("fts_instrument_use_default_parser",
index->parser = &fts_default_parser;);
ut_ad(index->parser);
}
} else if (key->flags & HA_SPATIAL) {
DBUG_ASSERT(!(key->flags & HA_NOSAME));
index->ind_type = DICT_SPATIAL;
ut_ad(n_fields == 1);
ulint num_v = 0;
/* Need to count the virtual fields before this spatial
indexed field */
for (ulint i = 0; i < key->key_part->fieldnr; i++) {
num_v += !altered_table->field[i]->stored_in_db();
}
index->fields[0].col_no = key->key_part[0].fieldnr - num_v;
index->fields[0].prefix_len = 0;
index->fields[0].is_v_col = false;
index->fields[0].descending = false;
/* Currently, the spatial index cannot be created
on virtual columns. It is blocked in the SQL layer. */
DBUG_ASSERT(key->key_part[0].field->stored_in_db());
} else {
index->ind_type = (key->flags & HA_NOSAME) ? DICT_UNIQUE : 0;
}
if (!(key->flags & HA_SPATIAL)) {
for (i = 0; i < n_fields; i++) {
innobase_create_index_field_def(
new_clustered, altered_table,
&key->key_part[i], &index->fields[i]);
if (index->fields[i].is_v_col) {
index->ind_type |= DICT_VIRTUAL;
}
}
}
DBUG_VOID_RETURN;
}
/*******************************************************************//**
Check whether the table has a unique index with FTS_DOC_ID_INDEX_NAME
on the Doc ID column.
@return the status of the FTS_DOC_ID index */
enum fts_doc_id_index_enum
innobase_fts_check_doc_id_index(
/*============================*/
const dict_table_t* table, /*!< in: table definition */
const TABLE* altered_table, /*!< in: MySQL table
that is being altered */
ulint* fts_doc_col_no) /*!< out: The column number for
Doc ID, or ULINT_UNDEFINED
if it is being created in
ha_alter_info */
{
const dict_index_t* index;
const dict_field_t* field;
if (altered_table) {
/* Check if a unique index with the name of
FTS_DOC_ID_INDEX_NAME is being created. */
const ulint fts_n_uniq= altered_table->versioned() ? 2 : 1;
for (uint i = 0; i < altered_table->s->keys; i++) {
const KEY& key = altered_table->key_info[i];
if (innobase_strcasecmp(
key.name.str, FTS_DOC_ID_INDEX_NAME)) {
continue;
}
if ((key.flags & HA_NOSAME)
&& key.user_defined_key_parts == fts_n_uniq
&& !(key.key_part[0].key_part_flag
& HA_REVERSE_SORT)
&& !strcmp(key.name.str, FTS_DOC_ID_INDEX_NAME)
&& !strcmp(key.key_part[0].field->field_name.str,
FTS_DOC_ID_COL_NAME)) {
if (fts_doc_col_no) {
*fts_doc_col_no = ULINT_UNDEFINED;
}
return(FTS_EXIST_DOC_ID_INDEX);
} else {
return(FTS_INCORRECT_DOC_ID_INDEX);
}
}
}
if (!table) {
return(FTS_NOT_EXIST_DOC_ID_INDEX);
}
for (index = dict_table_get_first_index(table);
index; index = dict_table_get_next_index(index)) {
/* Check if there exists a unique index with the name of
FTS_DOC_ID_INDEX_NAME and ignore the corrupted index */
if (index->type & DICT_CORRUPT
|| innobase_strcasecmp(index->name, FTS_DOC_ID_INDEX_NAME)) {
continue;
}
if (!dict_index_is_unique(index)
|| dict_index_get_n_unique(index) != table->fts_n_uniq()
|| strcmp(index->name, FTS_DOC_ID_INDEX_NAME)) {
return(FTS_INCORRECT_DOC_ID_INDEX);
}
/* Check whether the index has FTS_DOC_ID as its
first column */
field = dict_index_get_nth_field(index, 0);
/* The column would be of a BIGINT data type */
if (strcmp(field->name, FTS_DOC_ID_COL_NAME) == 0
&& !field->descending
&& field->col->mtype == DATA_INT
&& field->col->len == 8
&& field->col->prtype & DATA_NOT_NULL
&& !field->col->is_virtual()) {
if (fts_doc_col_no) {
*fts_doc_col_no = dict_col_get_no(field->col);
}
return(FTS_EXIST_DOC_ID_INDEX);
} else {
return(FTS_INCORRECT_DOC_ID_INDEX);
}
}
/* Not found */
return(FTS_NOT_EXIST_DOC_ID_INDEX);
}
/*******************************************************************//**
Check whether the table has a unique index with FTS_DOC_ID_INDEX_NAME
on the Doc ID column in MySQL create index definition.
@return FTS_EXIST_DOC_ID_INDEX if there exists the FTS_DOC_ID index,
FTS_INCORRECT_DOC_ID_INDEX if the FTS_DOC_ID index is of wrong format */
enum fts_doc_id_index_enum
innobase_fts_check_doc_id_index_in_def(
/*===================================*/
ulint n_key, /*!< in: Number of keys */
const KEY* key_info) /*!< in: Key definition */
{
/* Check whether there is a "FTS_DOC_ID_INDEX" in the to be built index
list */
const uint fts_n_uniq= key_info->table->versioned() ? 2 : 1;
for (ulint j = 0; j < n_key; j++) {
const KEY* key = &key_info[j];
if (innobase_strcasecmp(key->name.str, FTS_DOC_ID_INDEX_NAME)) {
continue;
}
/* Do a check on FTS DOC ID_INDEX, it must be unique,
named as "FTS_DOC_ID_INDEX" and on column "FTS_DOC_ID" */
if (!(key->flags & HA_NOSAME)
|| key->user_defined_key_parts != fts_n_uniq
|| (key->key_part[0].key_part_flag & HA_REVERSE_SORT)
|| strcmp(key->name.str, FTS_DOC_ID_INDEX_NAME)
|| strcmp(key->key_part[0].field->field_name.str,
FTS_DOC_ID_COL_NAME)) {
return(FTS_INCORRECT_DOC_ID_INDEX);
}
return(FTS_EXIST_DOC_ID_INDEX);
}
return(FTS_NOT_EXIST_DOC_ID_INDEX);
}
/** Create an index table where indexes are ordered as follows:
IF a new primary key is defined for the table THEN
1) New primary key
2) The remaining keys in key_info
ELSE
1) All new indexes in the order they arrive from MySQL
ENDIF
@return key definitions */
MY_ATTRIBUTE((nonnull, warn_unused_result, malloc))
inline index_def_t*
ha_innobase_inplace_ctx::create_key_defs(
const Alter_inplace_info* ha_alter_info,
/*!< in: alter operation */
const TABLE* altered_table,
/*!< in: MySQL table that is being altered */
ulint& n_fts_add,
/*!< out: number of FTS indexes to be created */
ulint& fts_doc_id_col,
/*!< in: The column number for Doc ID */
bool& add_fts_doc_id,
/*!< in: whether we need to add new DOC ID
column for FTS index */
bool& add_fts_doc_idx,
/*!< in: whether we need to add new DOC ID
index for FTS index */
const TABLE* table)
/*!< in: MySQL table that is being altered */
{
ulint& n_add = num_to_add_index;
const bool got_default_clust = new_table->indexes.start->is_gen_clust();
index_def_t* indexdef;
index_def_t* indexdefs;
bool new_primary;
const uint*const add
= ha_alter_info->index_add_buffer;
const KEY*const key_info
= ha_alter_info->key_info_buffer;
DBUG_ENTER("ha_innobase_inplace_ctx::create_key_defs");
DBUG_ASSERT(!add_fts_doc_id || add_fts_doc_idx);
DBUG_ASSERT(ha_alter_info->index_add_count == n_add);
/* If there is a primary key, it is always the first index
defined for the innodb_table. */
new_primary = n_add > 0
&& !my_strcasecmp(system_charset_info,
key_info[*add].name.str, "PRIMARY");
n_fts_add = 0;
/* If there is a UNIQUE INDEX consisting entirely of NOT NULL
columns and if the index does not contain column prefix(es)
(only prefix/part of the column is indexed), MySQL will treat the
index as a PRIMARY KEY unless the table already has one. */
ut_ad(altered_table->s->primary_key == 0
|| altered_table->s->primary_key == MAX_KEY);
if (got_default_clust && !new_primary) {
new_primary = (altered_table->s->primary_key != MAX_KEY);
}
const bool rebuild = new_primary || add_fts_doc_id
|| innobase_need_rebuild(ha_alter_info, table);
/* Reserve one more space if new_primary is true, and we might
need to add the FTS_DOC_ID_INDEX */
indexdef = indexdefs = static_cast<index_def_t*>(
mem_heap_alloc(
heap, sizeof *indexdef
* (ha_alter_info->key_count
+ rebuild
+ got_default_clust)));
if (rebuild) {
ulint primary_key_number;
if (new_primary) {
DBUG_ASSERT(n_add || got_default_clust);
DBUG_ASSERT(n_add || !altered_table->s->primary_key);
primary_key_number = altered_table->s->primary_key;
} else if (got_default_clust) {
/* Create the GEN_CLUST_INDEX */
index_def_t* index = indexdef++;
index->fields = NULL;
index->n_fields = 0;
index->ind_type = DICT_CLUSTERED;
index->name = innobase_index_reserve_name;
index->rebuild = true;
index->key_number = ~0U;
primary_key_number = ULINT_UNDEFINED;
goto created_clustered;
} else {
primary_key_number = 0;
}
/* Create the PRIMARY key index definition */
innobase_create_index_def(
altered_table, key_info, primary_key_number,
true, true, indexdef++, heap);
created_clustered:
n_add = 1;
for (ulint i = 0; i < ha_alter_info->key_count; i++) {
if (i == primary_key_number) {
continue;
}
/* Copy the index definitions. */
innobase_create_index_def(
altered_table, key_info, i, true,
false, indexdef, heap);
if (indexdef->ind_type & DICT_FTS) {
n_fts_add++;
}
indexdef++;
n_add++;
}
if (n_fts_add > 0) {
ulint num_v = 0;
if (!add_fts_doc_id
&& !innobase_fts_check_doc_id_col(
NULL, altered_table,
&fts_doc_id_col, &num_v)) {
fts_doc_id_col = altered_table->s->fields - num_v;
add_fts_doc_id = true;
}
if (!add_fts_doc_idx) {
fts_doc_id_index_enum ret;
ulint doc_col_no;
ret = innobase_fts_check_doc_id_index(
NULL, altered_table, &doc_col_no);
/* This should have been checked before */
ut_ad(ret != FTS_INCORRECT_DOC_ID_INDEX);
if (ret == FTS_NOT_EXIST_DOC_ID_INDEX) {
add_fts_doc_idx = true;
} else {
ut_ad(ret == FTS_EXIST_DOC_ID_INDEX);
ut_ad(doc_col_no == ULINT_UNDEFINED
|| doc_col_no == fts_doc_id_col);
}
}
}
} else {
/* Create definitions for added secondary indexes. */
for (ulint i = 0; i < n_add; i++) {
innobase_create_index_def(
altered_table, key_info, add[i],
false, false, indexdef, heap);
if (indexdef->ind_type & DICT_FTS) {
n_fts_add++;
}
indexdef++;
}
}
DBUG_ASSERT(indexdefs + n_add == indexdef);
if (add_fts_doc_idx) {
index_def_t* index = indexdef++;
uint nfields = 1;
if (altered_table->versioned())
++nfields;
index->fields = static_cast<index_field_t*>(
mem_heap_alloc(heap, sizeof(*index->fields) * nfields));
index->n_fields = nfields;
index->fields[0].col_no = fts_doc_id_col;
index->fields[0].prefix_len = 0;
index->fields[0].descending = false;
index->fields[0].is_v_col = false;
if (nfields == 2) {
index->fields[1].col_no
= altered_table->s->vers.end_fieldno;
index->fields[1].prefix_len = 0;
index->fields[1].descending = false;
index->fields[1].is_v_col = false;
}
index->ind_type = DICT_UNIQUE;
ut_ad(!rebuild
|| !add_fts_doc_id
|| fts_doc_id_col <= altered_table->s->fields);
index->name = FTS_DOC_ID_INDEX_NAME;
index->rebuild = rebuild;
/* TODO: assign a real MySQL key number for this */
index->key_number = ULINT_UNDEFINED;
n_add++;
}
DBUG_ASSERT(indexdef > indexdefs);
DBUG_ASSERT((ulint) (indexdef - indexdefs)
<= ha_alter_info->key_count
+ add_fts_doc_idx + got_default_clust);
DBUG_ASSERT(ha_alter_info->index_add_count <= n_add);
DBUG_RETURN(indexdefs);
}
MY_ATTRIBUTE((warn_unused_result))
bool too_big_key_part_length(size_t max_field_len, const KEY& key)
{
for (ulint i = 0; i < key.user_defined_key_parts; i++) {
if (key.key_part[i].length > max_field_len) {
return true;
}
}
return false;
}
/********************************************************************//**
Drop any indexes that we were not able to free previously due to
open table handles. */
static
void
online_retry_drop_indexes_low(
/*==========================*/
dict_table_t* table, /*!< in/out: table */
trx_t* trx) /*!< in/out: transaction */
{
ut_ad(dict_sys.locked());
ut_ad(trx->dict_operation_lock_mode);
ut_ad(trx->dict_operation);
/* We can have table->n_ref_count > 1, because other threads
may have prebuilt->table pointing to the table. However, these
other threads should be between statements, waiting for the
next statement to execute, or for a meta-data lock. */
ut_ad(table->get_ref_count() >= 1);
if (table->drop_aborted) {
row_merge_drop_indexes(trx, table, true);
}
}
/** After commit, unlock the data dictionary and close any deleted files.
@param deleted handles of deleted files
@param trx committed transaction */
static void unlock_and_close_files(const std::vector<pfs_os_file_t> &deleted,
trx_t *trx)
{
row_mysql_unlock_data_dictionary(trx);
for (pfs_os_file_t d : deleted)
os_file_close(d);
if (trx->commit_lsn)
log_write_up_to(trx->commit_lsn, true);
}
/** Commit a DDL transaction and unlink any deleted files. */
static void commit_unlock_and_unlink(trx_t *trx)
{
std::vector<pfs_os_file_t> deleted;
trx->commit(deleted);
unlock_and_close_files(deleted, trx);
}
/**
Drop any indexes that we were not able to free previously due to
open table handles.
@param table InnoDB table
@param thd connection handle
*/
static void online_retry_drop_indexes(dict_table_t *table, THD *thd)
{
if (table->drop_aborted)
{
trx_t *trx= innobase_trx_allocate(thd);
trx_start_for_ddl(trx);
if (lock_sys_tables(trx) == DB_SUCCESS)
{
row_mysql_lock_data_dictionary(trx);
online_retry_drop_indexes_low(table, trx);
commit_unlock_and_unlink(trx);
}
else
trx->commit();
trx->free();
}
ut_d(dict_sys.freeze(SRW_LOCK_CALL));
ut_d(dict_table_check_for_dup_indexes(table, CHECK_ALL_COMPLETE));
ut_d(dict_sys.unfreeze());
ut_ad(!table->drop_aborted);
}
/** Determines if InnoDB is dropping a foreign key constraint.
@param foreign the constraint
@param drop_fk constraints being dropped
@param n_drop_fk number of constraints that are being dropped
@return whether the constraint is being dropped */
MY_ATTRIBUTE((pure, nonnull(1), warn_unused_result))
inline
bool
innobase_dropping_foreign(
const dict_foreign_t* foreign,
dict_foreign_t** drop_fk,
ulint n_drop_fk)
{
while (n_drop_fk--) {
if (*drop_fk++ == foreign) {
return(true);
}
}
return(false);
}
/** Determines if an InnoDB FOREIGN KEY constraint depends on
the nullability changes of a column.
Enforce the following rules:
i) Don't allow the referencing column from NULL TO NOT NULL when
1) Foreign key constraint type is ON UPDATE SET NULL
2) Foreign key constraint type is ON DELETE SET NULL
3) Foreign key constraint type is UPDATE CASCADE and referenced
column declared as NULL
ii) Don't allow the referenced column from NOT NULL to NULL when
foreign key constraint type is UPDATE CASCADE and referencing column
declared as NOT NULL
@param user_table InnoDB table as it is before the ALTER operation
@param drop_fk constraints being dropped
@param n_drop_fk number of constraints that are being dropped
@param col_name modified column name
@param new_field_flags Modified field flags
@param strict_mode Whether the sql_mode is strict
@retval true Not allowed (will call my_error())
@retval false Allowed
*/
static
bool check_foreigns_nullability(const dict_table_t *user_table,
dict_foreign_t **drop_fk, ulint n_drop_fk,
const char *col_name, uint32_t new_field_flags,
bool strict_mode)
{
ut_ad(dict_sys.locked());
/* Changing from NULL to NOT NULL. So check referenced set */
if (new_field_flags & NOT_NULL_FLAG)
{
for (dict_foreign_t *foreign : user_table->foreign_set)
{
if (innobase_dropping_foreign(foreign, drop_fk, n_drop_fk))
continue;
if (strict_mode && foreign->on_update_cascade_null(col_name))
goto non_null_error;
if (foreign->type & (foreign->DELETE_SET_NULL |
foreign->UPDATE_SET_NULL))
{
if (foreign->foreign_index
&& foreign->col_fk_exists(col_name) != UINT_MAX)
{
non_null_error:
const char* fid = strchr(foreign->id, '/');
fid= fid ? fid + 1 : foreign->id;
my_error(ER_FK_COLUMN_NOT_NULL, MYF(0), col_name, fid);
return true;
}
}
}
}
else
{
for (dict_foreign_t *foreign : user_table->referenced_set)
{
if (strict_mode && foreign->on_update_cascade_not_null(col_name))
{
char display_name[FN_REFLEN];
const int dblen= int(table_name_t(const_cast<char*>(foreign->
foreign_table_name)).dblen());
char tbl_name[MAX_TABLE_NAME_LEN];
uint errors;
ulint tbl_name_len= strlen(foreign->foreign_table_name) - dblen + 1;
strncpy(tbl_name, foreign->foreign_table_name + dblen + 1,
tbl_name_len);
tbl_name[tbl_name_len - 1]= '\0';
innobase_convert_to_system_charset(tbl_name,
strchr(foreign->foreign_table_name,
'/') + 1,
MAX_TABLE_NAME_LEN, &errors);
if (errors)
{
strncpy(tbl_name, foreign->foreign_table_name + dblen + 1,
tbl_name_len);
tbl_name[tbl_name_len - 1]= '\0';
}
my_snprintf(display_name, FN_REFLEN - 1, "%.*s.%s",
dblen, foreign->foreign_table_name, tbl_name);
display_name[FN_REFLEN - 1]= '\0';
const char* fid = strchr(foreign->id, '/');
fid= fid ? fid + 1 : foreign->id;
my_error(ER_FK_COLUMN_CANNOT_CHANGE_CHILD, MYF(0), col_name,
fid, display_name);
return true;
}
}
}
return false;
}
/** Determines if an InnoDB FOREIGN KEY constraint depends on
the column when it is being dropped.
@param user_table InnoDB table as it is before the ALTER operation
@param drop_fk constraints being dropped
@param n_drop_fk number of constraints that are being dropped
@param col_name column name to be dropped
@retval true Not allowed (will call my_error())
@retval false Allowed
*/
static
bool check_foreign_drop_col(const dict_table_t *user_table,
dict_foreign_t **drop_fk, ulint n_drop_fk,
const char *col_name)
{
ut_ad(dict_sys.locked());
/* Check if any FOREIGN KEY constraints are defined on this column. */
for (dict_foreign_t *foreign : user_table->foreign_set)
{
if (innobase_dropping_foreign(foreign, drop_fk, n_drop_fk))
continue;
for (unsigned f = 0; f < foreign->n_fields; f++)
if (!strcmp(foreign->foreign_col_names[f], col_name))
{
my_error(ER_FK_COLUMN_CANNOT_DROP, MYF(0),
col_name, foreign->id);
return true;
}
}
/* Check if any FOREIGN KEY constraints in other tables are
referring to the column that is being dropped. */
for (dict_foreign_t *foreign : user_table->referenced_set)
{
if (innobase_dropping_foreign(foreign, drop_fk, n_drop_fk))
continue;
for (unsigned f = 0; f < foreign->n_fields; f++)
{
char display_name[FN_REFLEN];
if (strcmp(foreign->referenced_col_names[f], col_name))
continue;
char* buf_end = innobase_convert_name(
display_name, (sizeof display_name) - 1,
foreign->foreign_table_name,
strlen(foreign->foreign_table_name), NULL);
*buf_end = '\0';
my_error(ER_FK_COLUMN_CANNOT_DROP_CHILD,
MYF(0), col_name, foreign->id, display_name);
return true;
}
}
return false;
}
/** Determines if an InnoDB FOREIGN KEY constraint depends on a
column that is being dropped or modified to NOT NULL.
@param ha_alter_info Data used during in-place alter
@param altered_table MySQL table that is being altered
@param old_table MySQL table as it is before the ALTER operation
@param user_table InnoDB table as it is before the ALTER operation
@param drop_fk constraints being dropped
@param n_drop_fk number of constraints that are being dropped
@param strict_mode Whether the strict sql_mode is set
@retval true Not allowed (will call my_error())
@retval false Allowed
*/
MY_ATTRIBUTE((pure, nonnull(1,2,3), warn_unused_result))
static
bool
innobase_check_foreigns(
Alter_inplace_info* ha_alter_info,
const TABLE* old_table,
const dict_table_t* user_table,
dict_foreign_t** drop_fk,
ulint n_drop_fk,
bool strict_mode)
{
for (Field** fp = old_table->field; *fp; fp++) {
ut_ad(!(*fp)->real_maybe_null()
== !!((*fp)->flags & NOT_NULL_FLAG));
auto end = ha_alter_info->alter_info->create_list.end();
auto it = std::find_if(
ha_alter_info->alter_info->create_list.begin(), end,
[fp](const Create_field& field) {
return field.field == *fp;
});
if (it == end) {
if (check_foreign_drop_col(
user_table, drop_fk, n_drop_fk,
(*fp)->field_name.str)) {
return true;
}
} else if ((it->flags & NOT_NULL_FLAG)
!= ((*fp)->flags & NOT_NULL_FLAG)) {
if (check_foreigns_nullability(user_table, drop_fk,
n_drop_fk,
(*fp)->field_name.str,
it->flags,
strict_mode)) {
return true;
}
}
}
return false;
}
/** Convert a default value for ADD COLUMN.
@param[in,out] heap Memory heap where allocated
@param[out] dfield InnoDB data field to copy to
@param[in] field MySQL value for the column
@param[in] old_field Old column if altering; NULL for ADD COLUMN
@param[in] comp nonzero if in compact format. */
static void innobase_build_col_map_add(
mem_heap_t* heap,
dfield_t* dfield,
const Field* field,
const Field* old_field,
ulint comp)
{
if (old_field && old_field->real_maybe_null()
&& field->real_maybe_null()) {
return;
}
if (field->is_real_null()) {
dfield_set_null(dfield);
return;
}
const Field& from = old_field ? *old_field : *field;
ulint size = from.pack_length();
byte* buf = static_cast<byte*>(mem_heap_alloc(heap, size));
row_mysql_store_col_in_innobase_format(
dfield, buf, true, from.ptr, size, comp);
}
/** Construct the translation table for reordering, dropping or
adding columns.
@param ha_alter_info Data used during in-place alter
@param altered_table MySQL table that is being altered
@param table MySQL table as it is before the ALTER operation
@param new_table InnoDB table corresponding to MySQL altered_table
@param old_table InnoDB table corresponding to MYSQL table
@param defaults Default values for ADD COLUMN, or NULL if no ADD COLUMN
@param heap Memory heap where allocated
@return array of integers, mapping column numbers in the table
to column numbers in altered_table */
static MY_ATTRIBUTE((nonnull(1,2,3,4,5,7), warn_unused_result))
const ulint*
innobase_build_col_map(
/*===================*/
Alter_inplace_info* ha_alter_info,
const TABLE* altered_table,
const TABLE* table,
dict_table_t* new_table,
const dict_table_t* old_table,
dtuple_t* defaults,
mem_heap_t* heap)
{
DBUG_ENTER("innobase_build_col_map");
DBUG_ASSERT(altered_table != table);
DBUG_ASSERT(new_table != old_table);
DBUG_ASSERT(dict_table_get_n_cols(new_table)
+ dict_table_get_n_v_cols(new_table)
>= altered_table->s->fields + DATA_N_SYS_COLS);
DBUG_ASSERT(dict_table_get_n_cols(old_table)
+ dict_table_get_n_v_cols(old_table)
>= table->s->fields + DATA_N_SYS_COLS
|| ha_innobase::omits_virtual_cols(*table->s));
DBUG_ASSERT(!!defaults == !!(ha_alter_info->handler_flags
& INNOBASE_DEFAULTS));
DBUG_ASSERT(!defaults || dtuple_get_n_fields(defaults)
== dict_table_get_n_cols(new_table));
const uint old_n_v_cols = uint(table->s->fields
- table->s->stored_fields);
DBUG_ASSERT(old_n_v_cols == old_table->n_v_cols
|| table->s->frm_version < FRM_VER_EXPRESSSIONS);
DBUG_ASSERT(!old_n_v_cols || table->s->virtual_fields);
ulint* col_map = static_cast<ulint*>(
mem_heap_alloc(
heap, (size_t(old_table->n_cols) + old_n_v_cols)
* sizeof *col_map));
uint i = 0;
uint num_v = 0;
/* Any dropped columns will map to ULINT_UNDEFINED. */
for (uint old_i = 0; old_i + DATA_N_SYS_COLS < old_table->n_cols;
old_i++) {
col_map[old_i] = ULINT_UNDEFINED;
}
for (uint old_i = 0; old_i < old_n_v_cols; old_i++) {
col_map[old_i + old_table->n_cols] = ULINT_UNDEFINED;
}
const bool omits_virtual = ha_innobase::omits_virtual_cols(*table->s);
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
bool is_v = !new_field.stored_in_db();
ulint num_old_v = 0;
for (uint old_i = 0; table->field[old_i]; old_i++) {
const Field* field = table->field[old_i];
if (!field->stored_in_db()) {
if (is_v && new_field.field == field) {
if (!omits_virtual) {
col_map[old_table->n_cols
+ num_v]
= num_old_v;
}
num_old_v++;
goto found_col;
}
num_old_v++;
continue;
}
if (new_field.field == field) {
const Field* altered_field =
altered_table->field[i + num_v];
if (defaults) {
innobase_build_col_map_add(
heap,
dtuple_get_nth_field(
defaults, i),
altered_field,
field,
dict_table_is_comp(
new_table));
}
col_map[old_i - num_old_v] = i;
if (!old_table->versioned()
|| !altered_table->versioned()) {
} else if (old_i - num_old_v == old_table->vers_start) {
ut_ad(field->vers_sys_start());
new_table->vers_start = i
& dict_index_t::MAX_N_FIELDS;
} else if (old_i - num_old_v == old_table->vers_end) {
ut_ad(field->vers_sys_end());
new_table->vers_end = i
& dict_index_t::MAX_N_FIELDS;
}
goto found_col;
}
}
if (!is_v) {
innobase_build_col_map_add(
heap, dtuple_get_nth_field(defaults, i),
altered_table->field[i + num_v],
NULL,
dict_table_is_comp(new_table));
}
found_col:
if (is_v) {
num_v++;
} else {
i++;
}
}
DBUG_ASSERT(i == altered_table->s->fields - num_v);
i = table->s->fields - old_n_v_cols;
/* Add the InnoDB hidden FTS_DOC_ID column, if any. */
if (i + DATA_N_SYS_COLS < old_table->n_cols) {
/* There should be exactly one extra field,
the FTS_DOC_ID. */
DBUG_ASSERT(DICT_TF2_FLAG_IS_SET(old_table,
DICT_TF2_FTS_HAS_DOC_ID));
DBUG_ASSERT(i + DATA_N_SYS_COLS + 1 == old_table->n_cols);
DBUG_ASSERT(!strcmp(dict_table_get_col_name(
old_table, i),
FTS_DOC_ID_COL_NAME));
if (altered_table->s->fields + DATA_N_SYS_COLS
- new_table->n_v_cols
< new_table->n_cols) {
DBUG_ASSERT(DICT_TF2_FLAG_IS_SET(
new_table,
DICT_TF2_FTS_HAS_DOC_ID));
DBUG_ASSERT(altered_table->s->fields
+ DATA_N_SYS_COLS + 1
== static_cast<ulint>(
new_table->n_cols
+ new_table->n_v_cols));
col_map[i] = altered_table->s->fields
- new_table->n_v_cols;
} else {
DBUG_ASSERT(!DICT_TF2_FLAG_IS_SET(
new_table,
DICT_TF2_FTS_HAS_DOC_ID));
col_map[i] = ULINT_UNDEFINED;
}
i++;
} else {
DBUG_ASSERT(!DICT_TF2_FLAG_IS_SET(
old_table,
DICT_TF2_FTS_HAS_DOC_ID));
}
for (; i < old_table->n_cols; i++) {
col_map[i] = i + new_table->n_cols - old_table->n_cols;
}
DBUG_RETURN(col_map);
}
/** Get the new non-virtual column names if any columns were renamed
@param ha_alter_info Data used during in-place alter
@param altered_table MySQL table that is being altered
@param table MySQL table as it is before the ALTER operation
@param user_table InnoDB table as it is before the ALTER operation
@param heap Memory heap for the allocation
@return array of new column names in rebuilt_table, or NULL if not renamed */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
const char**
innobase_get_col_names(
Alter_inplace_info* ha_alter_info,
const TABLE* altered_table,
const TABLE* table,
const dict_table_t* user_table,
mem_heap_t* heap)
{
const char** cols;
uint i;
DBUG_ENTER("innobase_get_col_names");
DBUG_ASSERT(user_table->n_t_def > table->s->fields);
DBUG_ASSERT(ha_alter_info->handler_flags
& ALTER_COLUMN_NAME);
cols = static_cast<const char**>(
mem_heap_zalloc(heap, user_table->n_def * sizeof *cols));
i = 0;
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
ulint num_v = 0;
DBUG_ASSERT(i < altered_table->s->fields);
if (!new_field.stored_in_db()) {
continue;
}
for (uint old_i = 0; table->field[old_i]; old_i++) {
num_v += !table->field[old_i]->stored_in_db();
if (new_field.field == table->field[old_i]) {
cols[old_i - num_v] = new_field.field_name.str;
break;
}
}
i++;
}
/* Copy the internal column names. */
i = table->s->fields - user_table->n_v_def;
cols[i] = dict_table_get_col_name(user_table, i);
while (++i < user_table->n_def) {
cols[i] = cols[i - 1] + strlen(cols[i - 1]) + 1;
}
DBUG_RETURN(cols);
}
/** Check whether the column prefix is increased, decreased, or unchanged.
@param[in] new_prefix_len new prefix length
@param[in] old_prefix_len new prefix length
@retval 1 prefix is increased
@retval 0 prefix is unchanged
@retval -1 prefix is decreased */
static inline
lint
innobase_pk_col_prefix_compare(
ulint new_prefix_len,
ulint old_prefix_len)
{
ut_ad(new_prefix_len < COMPRESSED_REC_MAX_DATA_SIZE);
ut_ad(old_prefix_len < COMPRESSED_REC_MAX_DATA_SIZE);
if (new_prefix_len == old_prefix_len) {
return(0);
}
if (new_prefix_len == 0) {
new_prefix_len = ULINT_MAX;
}
if (old_prefix_len == 0) {
old_prefix_len = ULINT_MAX;
}
if (new_prefix_len > old_prefix_len) {
return(1);
} else {
return(-1);
}
}
/** Check whether the column is existing in old table.
@param[in] new_col_no new column no
@param[in] col_map mapping of old column numbers to new ones
@param[in] col_map_size the column map size
@return true if the column is existing, otherwise false. */
static inline
bool
innobase_pk_col_is_existing(
const ulint new_col_no,
const ulint* col_map,
const ulint col_map_size)
{
for (ulint i = 0; i < col_map_size; i++) {
if (col_map[i] == new_col_no) {
return(true);
}
}
return(false);
}
/** Determine whether both the indexes have same set of primary key
fields arranged in the same order.
Rules when we cannot skip sorting:
(1) Removing existing PK columns somewhere else than at the end of the PK;
(2) Adding existing columns to the PK, except at the end of the PK when no
columns are removed from the PK;
(3) Changing the order of existing PK columns;
(4) Decreasing the prefix length just like removing existing PK columns
follows rule(1), Increasing the prefix length just like adding existing
PK columns follows rule(2);
(5) Changing the ASC/DESC attribute of the existing PK columns.
@param[in] col_map mapping of old column numbers to new ones
@param[in] ha_alter_info Data used during in-place alter
@param[in] old_clust_index index to be compared
@param[in] new_clust_index index to be compared
@retval true if both indexes have same order.
@retval false. */
static MY_ATTRIBUTE((warn_unused_result))
bool
innobase_pk_order_preserved(
const ulint* col_map,
const dict_index_t* old_clust_index,
const dict_index_t* new_clust_index)
{
ulint old_n_uniq
= dict_index_get_n_ordering_defined_by_user(
old_clust_index);
ulint new_n_uniq
= dict_index_get_n_ordering_defined_by_user(
new_clust_index);
ut_ad(dict_index_is_clust(old_clust_index));
ut_ad(dict_index_is_clust(new_clust_index));
ut_ad(old_clust_index->table != new_clust_index->table);
ut_ad(col_map != NULL);
if (old_n_uniq == 0) {
/* There was no PRIMARY KEY in the table.
If there is no PRIMARY KEY after the ALTER either,
no sorting is needed. */
return(new_n_uniq == old_n_uniq);
}
/* DROP PRIMARY KEY is only allowed in combination with
ADD PRIMARY KEY. */
ut_ad(new_n_uniq > 0);
/* The order of the last processed new_clust_index key field,
not counting ADD COLUMN, which are constant. */
lint last_field_order = -1;
ulint existing_field_count = 0;
ulint old_n_cols = dict_table_get_n_cols(old_clust_index->table);
for (ulint new_field = 0; new_field < new_n_uniq; new_field++) {
ulint new_col_no =
new_clust_index->fields[new_field].col->ind;
/* Check if there is a match in old primary key. */
ulint old_field = 0;
while (old_field < old_n_uniq) {
ulint old_col_no =
old_clust_index->fields[old_field].col->ind;
if (col_map[old_col_no] == new_col_no) {
break;
}
old_field++;
}
/* The order of key field in the new primary key.
1. old PK column: idx in old primary key
2. existing column: old_n_uniq + sequence no
3. newly added column: no order */
lint new_field_order;
const bool old_pk_column = old_field < old_n_uniq;
if (old_pk_column) {
new_field_order = lint(old_field);
} else if (innobase_pk_col_is_existing(new_col_no, col_map,
old_n_cols)
|| new_clust_index->table->persistent_autoinc
== new_field + 1) {
/* Adding an existing column or an AUTO_INCREMENT
column may change the existing ordering. */
new_field_order = lint(old_n_uniq
+ existing_field_count++);
} else {
/* Skip newly added column. */
continue;
}
if (last_field_order + 1 != new_field_order) {
/* Old PK order is not kept, or existing column
is not added at the end of old PK. */
return(false);
}
last_field_order = new_field_order;
if (!old_pk_column) {
continue;
}
const dict_field_t &of = old_clust_index->fields[old_field];
const dict_field_t &nf = new_clust_index->fields[new_field];
if (of.descending != nf.descending) {
return false;
}
/* Check prefix length change. */
const lint prefix_change = innobase_pk_col_prefix_compare(
nf.prefix_len, of.prefix_len);
if (prefix_change < 0) {
/* If a column's prefix length is decreased, it should
be the last old PK column in new PK.
Note: we set last_field_order to -2, so that if there
are any old PK colmns or existing columns after it in
new PK, the comparison to new_field_order will fail in
the next round.*/
last_field_order = -2;
} else if (prefix_change > 0) {
/* If a column's prefix length is increased, it should
be the last PK column in old PK. */
if (old_field != old_n_uniq - 1) {
return(false);
}
}
}
return(true);
}
/** Update the mtype from DATA_BLOB to DATA_GEOMETRY for a specified
GIS column of a table. This is used when we want to create spatial index
on legacy GIS columns coming from 5.6, where we store GIS data as DATA_BLOB
in innodb layer.
@param[in] table_id table id
@param[in] col_name column name
@param[in] trx data dictionary transaction
@retval true Failure
@retval false Success */
static
bool
innobase_update_gis_column_type(
table_id_t table_id,
const char* col_name,
trx_t* trx)
{
pars_info_t* info;
dberr_t error;
DBUG_ENTER("innobase_update_gis_column_type");
DBUG_ASSERT(trx->dict_operation);
ut_ad(trx->dict_operation_lock_mode);
ut_ad(dict_sys.locked());
info = pars_info_create();
pars_info_add_ull_literal(info, "tableid", table_id);
pars_info_add_str_literal(info, "name", col_name);
pars_info_add_int4_literal(info, "mtype", DATA_GEOMETRY);
trx->op_info = "update column type to DATA_GEOMETRY";
error = que_eval_sql(
info,
"PROCEDURE UPDATE_SYS_COLUMNS_PROC () IS\n"
"BEGIN\n"
"UPDATE SYS_COLUMNS SET MTYPE=:mtype\n"
"WHERE TABLE_ID=:tableid AND NAME=:name;\n"
"END;\n", trx);
trx->error_state = DB_SUCCESS;
trx->op_info = "";
DBUG_RETURN(error != DB_SUCCESS);
}
/** Check if we are creating spatial indexes on GIS columns, which are
legacy columns from earlier MySQL, such as 5.6. If so, we have to update
the mtypes of the old GIS columns to DATA_GEOMETRY.
In 5.6, we store GIS columns as DATA_BLOB in InnoDB layer, it will introduce
confusion when we run latest server on older data. That's why we need to
do the upgrade.
@param[in] ha_alter_info Data used during in-place alter
@param[in] table Table on which we want to add indexes
@param[in] trx Transaction
@return DB_SUCCESS if update successfully or no columns need to be updated,
otherwise DB_ERROR, which means we can't update the mtype for some
column, and creating spatial index on it should be dangerous */
static
dberr_t
innobase_check_gis_columns(
Alter_inplace_info* ha_alter_info,
dict_table_t* table,
trx_t* trx)
{
DBUG_ENTER("innobase_check_gis_columns");
for (uint key_num = 0;
key_num < ha_alter_info->index_add_count;
key_num++) {
const KEY& key = ha_alter_info->key_info_buffer[
ha_alter_info->index_add_buffer[key_num]];
if (!(key.flags & HA_SPATIAL)) {
continue;
}
ut_ad(key.user_defined_key_parts == 1);
const KEY_PART_INFO& key_part = key.key_part[0];
/* Does not support spatial index on virtual columns */
if (!key_part.field->stored_in_db()) {
DBUG_RETURN(DB_UNSUPPORTED);
}
ulint col_nr = dict_table_has_column(
table,
key_part.field->field_name.str,
key_part.fieldnr);
ut_ad(col_nr != table->n_def);
dict_col_t* col = &table->cols[col_nr];
if (col->mtype != DATA_BLOB) {
ut_ad(DATA_GEOMETRY_MTYPE(col->mtype));
continue;
}
const char* col_name = dict_table_get_col_name(
table, col_nr);
if (innobase_update_gis_column_type(
table->id, col_name, trx)) {
DBUG_RETURN(DB_ERROR);
} else {
col->mtype = DATA_GEOMETRY;
ib::info() << "Updated mtype of column" << col_name
<< " in table " << table->name
<< ", whose id is " << table->id
<< " to DATA_GEOMETRY";
}
}
DBUG_RETURN(DB_SUCCESS);
}
/** Collect virtual column info for its addition
@param[in] ha_alter_info Data used during in-place alter
@param[in] altered_table MySQL table that is being altered to
@param[in] table MySQL table as it is before the ALTER operation
@retval true Failure
@retval false Success */
static
bool
prepare_inplace_add_virtual(
Alter_inplace_info* ha_alter_info,
const TABLE* altered_table,
const TABLE* table)
{
ha_innobase_inplace_ctx* ctx;
uint16_t i = 0;
ctx = static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx);
unsigned j = altered_table->s->virtual_fields + ctx->num_to_drop_vcol;
ctx->add_vcol = static_cast<dict_v_col_t*>(
mem_heap_zalloc(ctx->heap, j * sizeof *ctx->add_vcol));
ctx->add_vcol_name = static_cast<const char**>(
mem_heap_alloc(ctx->heap, j * sizeof *ctx->add_vcol_name));
j = 0;
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
const Field* field = altered_table->field[i++];
if (new_field.field || field->stored_in_db()) {
continue;
}
unsigned is_unsigned;
auto col_type = get_innobase_type_from_mysql_type(
&is_unsigned, field);
auto col_len = field->pack_length();
unsigned field_type = field->type() | is_unsigned;
if (!field->real_maybe_null()) {
field_type |= DATA_NOT_NULL;
}
if (field->binary()) {
field_type |= DATA_BINARY_TYPE;
}
unsigned charset_no;
if (dtype_is_string_type(col_type)) {
charset_no = field->charset()->number;
DBUG_EXECUTE_IF(
"ib_alter_add_virtual_fail",
charset_no += MAX_CHAR_COLL_NUM;);
if (charset_no > MAX_CHAR_COLL_NUM) {
my_error(ER_WRONG_KEY_COLUMN, MYF(0), "InnoDB",
field->field_name.str);
return(true);
}
} else {
charset_no = 0;
}
if (field->type() == MYSQL_TYPE_VARCHAR) {
uint32 length_bytes
= static_cast<const Field_varstring*>(
field)->length_bytes;
col_len -= length_bytes;
if (length_bytes == 2) {
field_type |= DATA_LONG_TRUE_VARCHAR;
}
}
new (&ctx->add_vcol[j]) dict_v_col_t();
ctx->add_vcol[j].m_col.prtype = dtype_form_prtype(
field_type, charset_no);
ctx->add_vcol[j].m_col.prtype |= DATA_VIRTUAL;
ctx->add_vcol[j].m_col.mtype = col_type;
ctx->add_vcol[j].m_col.len = static_cast<uint16_t>(col_len);
ctx->add_vcol[j].m_col.ind = (i - 1)
& dict_index_t::MAX_N_FIELDS;
ctx->add_vcol[j].num_base = 0;
ctx->add_vcol_name[j] = field->field_name.str;
ctx->add_vcol[j].base_col = NULL;
ctx->add_vcol[j].v_pos = (ctx->old_table->n_v_cols
- ctx->num_to_drop_vcol + j)
& dict_index_t::MAX_N_FIELDS;
/* MDEV-17468: Do this on ctx->instant_table later */
innodb_base_col_setup(ctx->old_table, field, &ctx->add_vcol[j]);
j++;
}
ctx->num_to_add_vcol = j;
return(false);
}
/** Collect virtual column info for its addition
@param[in] ha_alter_info Data used during in-place alter
@param[in] table MySQL table as it is before the ALTER operation
@retval true Failure
@retval false Success */
static
bool
prepare_inplace_drop_virtual(
Alter_inplace_info* ha_alter_info,
const TABLE* table)
{
ha_innobase_inplace_ctx* ctx;
unsigned i = 0, j = 0;
ctx = static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx);
ctx->num_to_drop_vcol = 0;
for (i = 0; table->field[i]; i++) {
const Field* field = table->field[i];
if (field->flags & FIELD_IS_DROPPED && !field->stored_in_db()) {
ctx->num_to_drop_vcol++;
}
}
ctx->drop_vcol = static_cast<dict_v_col_t*>(
mem_heap_alloc(ctx->heap, ctx->num_to_drop_vcol
* sizeof *ctx->drop_vcol));
ctx->drop_vcol_name = static_cast<const char**>(
mem_heap_alloc(ctx->heap, ctx->num_to_drop_vcol
* sizeof *ctx->drop_vcol_name));
for (i = 0; table->field[i]; i++) {
Field *field = table->field[i];
if (!(field->flags & FIELD_IS_DROPPED) || field->stored_in_db()) {
continue;
}
unsigned is_unsigned;
auto col_type = get_innobase_type_from_mysql_type(
&is_unsigned, field);
auto col_len = field->pack_length();
unsigned field_type = field->type() | is_unsigned;
if (!field->real_maybe_null()) {
field_type |= DATA_NOT_NULL;
}
if (field->binary()) {
field_type |= DATA_BINARY_TYPE;
}
unsigned charset_no = 0;
if (dtype_is_string_type(col_type)) {
charset_no = field->charset()->number;
DBUG_EXECUTE_IF(
"ib_alter_add_virtual_fail",
charset_no += MAX_CHAR_COLL_NUM;);
if (charset_no > MAX_CHAR_COLL_NUM) {
my_error(ER_WRONG_KEY_COLUMN, MYF(0), "InnoDB",
field->field_name.str);
return(true);
}
} else {
charset_no = 0;
}
if (field->type() == MYSQL_TYPE_VARCHAR) {
uint32 length_bytes
= static_cast<const Field_varstring*>(
field)->length_bytes;
col_len -= length_bytes;
if (length_bytes == 2) {
field_type |= DATA_LONG_TRUE_VARCHAR;
}
}
ctx->drop_vcol[j].m_col.prtype = dtype_form_prtype(
field_type, charset_no);
ctx->drop_vcol[j].m_col.prtype |= DATA_VIRTUAL;
ctx->drop_vcol[j].m_col.mtype = col_type;
ctx->drop_vcol[j].m_col.len = static_cast<uint16_t>(col_len);
ctx->drop_vcol[j].m_col.ind = i & dict_index_t::MAX_N_FIELDS;
ctx->drop_vcol_name[j] = field->field_name.str;
dict_v_col_t* v_col = dict_table_get_nth_v_col_mysql(
ctx->old_table, i);
ctx->drop_vcol[j].v_pos = v_col->v_pos;
j++;
}
return(false);
}
/** Insert a new record to INNODB SYS_VIRTUAL
@param[in] table InnoDB table
@param[in] pos virtual column column no
@param[in] base_pos base column pos
@param[in] trx transaction
@retval false on success
@retval true on failure (my_error() will have been called) */
static bool innobase_insert_sys_virtual(
const dict_table_t* table,
ulint pos,
ulint base_pos,
trx_t* trx)
{
pars_info_t* info = pars_info_create();
pars_info_add_ull_literal(info, "id", table->id);
pars_info_add_int4_literal(info, "pos", pos);
pars_info_add_int4_literal(info, "base_pos", base_pos);
if (DB_SUCCESS != que_eval_sql(
info,
"PROCEDURE P () IS\n"
"BEGIN\n"
"INSERT INTO SYS_VIRTUAL VALUES (:id, :pos, :base_pos);\n"
"END;\n", trx)) {
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: ADD COLUMN...VIRTUAL");
return true;
}
return false;
}
/** Insert a record to the SYS_COLUMNS dictionary table.
@param[in] table_id table id
@param[in] pos position of the column
@param[in] field_name field name
@param[in] mtype main type
@param[in] prtype precise type
@param[in] len fixed length in bytes, or 0
@param[in] n_base number of base columns of virtual columns, or 0
@param[in] update whether to update instead of inserting
@retval false on success
@retval true on failure (my_error() will have been called) */
static bool innodb_insert_sys_columns(
table_id_t table_id,
ulint pos,
const char* field_name,
ulint mtype,
ulint prtype,
ulint len,
ulint n_base,
trx_t* trx,
bool update = false)
{
pars_info_t* info = pars_info_create();
pars_info_add_ull_literal(info, "id", table_id);
pars_info_add_int4_literal(info, "pos", pos);
pars_info_add_str_literal(info, "name", field_name);
pars_info_add_int4_literal(info, "mtype", mtype);
pars_info_add_int4_literal(info, "prtype", prtype);
pars_info_add_int4_literal(info, "len", len);
pars_info_add_int4_literal(info, "base", n_base);
if (update) {
if (DB_SUCCESS != que_eval_sql(
info,
"PROCEDURE UPD_COL () IS\n"
"BEGIN\n"
"UPDATE SYS_COLUMNS SET\n"
"NAME=:name, MTYPE=:mtype, PRTYPE=:prtype, "
"LEN=:len, PREC=:base\n"
"WHERE TABLE_ID=:id AND POS=:pos;\n"
"END;\n", trx)) {
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: Updating SYS_COLUMNS failed");
return true;
}
return false;
}
DBUG_EXECUTE_IF("instant_insert_fail",
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: Insert into SYS_COLUMNS failed");
mem_heap_free(info->heap);
return true;);
if (DB_SUCCESS != que_eval_sql(
info,
"PROCEDURE ADD_COL () IS\n"
"BEGIN\n"
"INSERT INTO SYS_COLUMNS VALUES"
"(:id,:pos,:name,:mtype,:prtype,:len,:base);\n"
"END;\n", trx)) {
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: Insert into SYS_COLUMNS failed");
return true;
}
return false;
}
/** Update INNODB SYS_COLUMNS on new virtual columns
@param[in] table InnoDB table
@param[in] col_name column name
@param[in] vcol virtual column
@param[in] trx transaction
@retval false on success
@retval true on failure (my_error() will have been called) */
static bool innobase_add_one_virtual(
const dict_table_t* table,
const char* col_name,
dict_v_col_t* vcol,
trx_t* trx)
{
ulint pos = dict_create_v_col_pos(vcol->v_pos,
vcol->m_col.ind);
if (innodb_insert_sys_columns(table->id, pos, col_name,
vcol->m_col.mtype, vcol->m_col.prtype,
vcol->m_col.len, vcol->num_base, trx)) {
return true;
}
for (unsigned i = 0; i < vcol->num_base; i++) {
if (innobase_insert_sys_virtual(
table, pos, vcol->base_col[i]->ind, trx)) {
return true;
}
}
return false;
}
/** Update SYS_TABLES.N_COLS in the data dictionary.
@param[in] user_table InnoDB table
@param[in] n the new value of SYS_TABLES.N_COLS
@param[in] trx transaction
@return whether the operation failed */
static bool innodb_update_cols(const dict_table_t* table, ulint n, trx_t* trx)
{
pars_info_t* info = pars_info_create();
pars_info_add_int4_literal(info, "n", n);
pars_info_add_ull_literal(info, "id", table->id);
if (DB_SUCCESS != que_eval_sql(info,
"PROCEDURE UPDATE_N_COLS () IS\n"
"BEGIN\n"
"UPDATE SYS_TABLES SET N_COLS = :n"
" WHERE ID = :id;\n"
"END;\n", trx)) {
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: Updating SYS_TABLES.N_COLS failed");
return true;
}
return false;
}
/** Update system table for adding virtual column(s)
@param[in] ha_alter_info Data used during in-place alter
@param[in] user_table InnoDB table
@param[in] trx transaction
@retval true Failure
@retval false Success */
static
bool
innobase_add_virtual_try(
const Alter_inplace_info* ha_alter_info,
const dict_table_t* user_table,
trx_t* trx)
{
ha_innobase_inplace_ctx* ctx = static_cast<ha_innobase_inplace_ctx*>(
ha_alter_info->handler_ctx);
for (ulint i = 0; i < ctx->num_to_add_vcol; i++) {
if (innobase_add_one_virtual(
user_table, ctx->add_vcol_name[i],
&ctx->add_vcol[i], trx)) {
return true;
}
}
return false;
}
/** Delete metadata from SYS_COLUMNS and SYS_VIRTUAL.
@param[in] id table id
@param[in] pos first SYS_COLUMNS.POS
@param[in,out] trx data dictionary transaction
@retval true Failure
@retval false Success. */
static bool innobase_instant_drop_cols(table_id_t id, ulint pos, trx_t* trx)
{
pars_info_t* info = pars_info_create();
pars_info_add_ull_literal(info, "id", id);
pars_info_add_int4_literal(info, "pos", pos);
dberr_t err = que_eval_sql(
info,
"PROCEDURE DELETE_COL () IS\n"
"BEGIN\n"
"DELETE FROM SYS_COLUMNS WHERE\n"
"TABLE_ID = :id AND POS >= :pos;\n"
"DELETE FROM SYS_VIRTUAL WHERE TABLE_ID = :id;\n"
"END;\n", trx);
if (err != DB_SUCCESS) {
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: DELETE from SYS_COLUMNS/SYS_VIRTUAL failed");
return true;
}
return false;
}
/** Update INNODB SYS_COLUMNS on new virtual column's position
@param[in] table InnoDB table
@param[in] old_pos old position
@param[in] new_pos new position
@param[in] trx transaction
@return DB_SUCCESS if successful, otherwise error code */
static
dberr_t
innobase_update_v_pos_sys_columns(
const dict_table_t* table,
ulint old_pos,
ulint new_pos,
trx_t* trx)
{
pars_info_t* info = pars_info_create();
pars_info_add_int4_literal(info, "pos", old_pos);
pars_info_add_int4_literal(info, "val", new_pos);
pars_info_add_ull_literal(info, "id", table->id);
dberr_t error = que_eval_sql(
info,
"PROCEDURE P () IS\n"
"BEGIN\n"
"UPDATE SYS_COLUMNS\n"
"SET POS = :val\n"
"WHERE POS = :pos\n"
"AND TABLE_ID = :id;\n"
"END;\n", trx);
return(error);
}
/** Update INNODB SYS_VIRTUAL table with new virtual column position
@param[in] table InnoDB table
@param[in] old_pos old position
@param[in] new_pos new position
@param[in] trx transaction
@return DB_SUCCESS if successful, otherwise error code */
static
dberr_t
innobase_update_v_pos_sys_virtual(
const dict_table_t* table,
ulint old_pos,
ulint new_pos,
trx_t* trx)
{
pars_info_t* info = pars_info_create();
pars_info_add_int4_literal(info, "pos", old_pos);
pars_info_add_int4_literal(info, "val", new_pos);
pars_info_add_ull_literal(info, "id", table->id);
dberr_t error = que_eval_sql(
info,
"PROCEDURE P () IS\n"
"BEGIN\n"
"UPDATE SYS_VIRTUAL\n"
"SET POS = :val\n"
"WHERE POS = :pos\n"
"AND TABLE_ID = :id;\n"
"END;\n", trx);
return(error);
}
/** Update InnoDB system tables on dropping a virtual column
@param[in] table InnoDB table
@param[in] col_name column name of the dropping column
@param[in] drop_col col information for the dropping column
@param[in] n_prev_dropped number of previously dropped columns in the
same alter clause
@param[in] trx transaction
@return DB_SUCCESS if successful, otherwise error code */
static
dberr_t
innobase_drop_one_virtual_sys_columns(
const dict_table_t* table,
const char* col_name,
dict_col_t* drop_col,
ulint n_prev_dropped,
trx_t* trx)
{
pars_info_t* info = pars_info_create();
pars_info_add_ull_literal(info, "id", table->id);
pars_info_add_str_literal(info, "name", col_name);
dberr_t error = que_eval_sql(
info,
"PROCEDURE P () IS\n"
"BEGIN\n"
"DELETE FROM SYS_COLUMNS\n"
"WHERE TABLE_ID = :id\n"
"AND NAME = :name;\n"
"END;\n", trx);
if (error != DB_SUCCESS) {
return(error);
}
dict_v_col_t* v_col = dict_table_get_nth_v_col_mysql(
table, drop_col->ind);
/* Adjust column positions for all subsequent columns */
for (ulint i = v_col->v_pos + 1; i < table->n_v_cols; i++) {
dict_v_col_t* t_col = dict_table_get_nth_v_col(table, i);
ulint old_p = dict_create_v_col_pos(
t_col->v_pos - n_prev_dropped,
t_col->m_col.ind - n_prev_dropped);
ulint new_p = dict_create_v_col_pos(
t_col->v_pos - 1 - n_prev_dropped,
ulint(t_col->m_col.ind) - 1 - n_prev_dropped);
error = innobase_update_v_pos_sys_columns(
table, old_p, new_p, trx);
if (error != DB_SUCCESS) {
return(error);
}
error = innobase_update_v_pos_sys_virtual(
table, old_p, new_p, trx);
if (error != DB_SUCCESS) {
return(error);
}
}
return(error);
}
/** Delete virtual column's info from INNODB SYS_VIRTUAL
@param[in] table InnoDB table
@param[in] pos position of the virtual column to be deleted
@param[in] trx transaction
@return DB_SUCCESS if successful, otherwise error code */
static
dberr_t
innobase_drop_one_virtual_sys_virtual(
const dict_table_t* table,
ulint pos,
trx_t* trx)
{
pars_info_t* info = pars_info_create();
pars_info_add_ull_literal(info, "id", table->id);
pars_info_add_int4_literal(info, "pos", pos);
dberr_t error = que_eval_sql(
info,
"PROCEDURE P () IS\n"
"BEGIN\n"
"DELETE FROM SYS_VIRTUAL\n"
"WHERE TABLE_ID = :id\n"
"AND POS = :pos;\n"
"END;\n", trx);
return(error);
}
/** Update system table for dropping virtual column(s)
@param[in] ha_alter_info Data used during in-place alter
@param[in] user_table InnoDB table
@param[in] trx transaction
@retval true Failure
@retval false Success */
static
bool
innobase_drop_virtual_try(
const Alter_inplace_info* ha_alter_info,
const dict_table_t* user_table,
trx_t* trx)
{
ha_innobase_inplace_ctx* ctx;
dberr_t err = DB_SUCCESS;
ctx = static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx);
for (unsigned i = 0; i < ctx->num_to_drop_vcol; i++) {
ulint pos = dict_create_v_col_pos(
ctx->drop_vcol[i].v_pos - i,
ctx->drop_vcol[i].m_col.ind - i);
err = innobase_drop_one_virtual_sys_virtual(
user_table, pos, trx);
if (err != DB_SUCCESS) {
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: DROP COLUMN...VIRTUAL");
return(true);
}
err = innobase_drop_one_virtual_sys_columns(
user_table, ctx->drop_vcol_name[i],
&(ctx->drop_vcol[i].m_col), i, trx);
if (err != DB_SUCCESS) {
my_error(ER_INTERNAL_ERROR, MYF(0),
"InnoDB: DROP COLUMN...VIRTUAL");
return(true);
}
}
return false;
}
/** Serialise metadata of dropped or reordered columns.
@param[in,out] heap memory heap for allocation
@param[out] field data field with the metadata */
inline
void dict_table_t::serialise_columns(mem_heap_t* heap, dfield_t* field) const
{
DBUG_ASSERT(instant);
const dict_index_t& index = *UT_LIST_GET_FIRST(indexes);
unsigned n_fixed = index.first_user_field();
unsigned num_non_pk_fields = index.n_fields - n_fixed;
ulint len = 4 + num_non_pk_fields * 2;
byte* data = static_cast<byte*>(mem_heap_alloc(heap, len));
dfield_set_data(field, data, len);
mach_write_to_4(data, num_non_pk_fields);
data += 4;
for (ulint i = n_fixed; i < index.n_fields; i++) {
mach_write_to_2(data, instant->field_map[i - n_fixed]);
data += 2;
}
}
/** Construct the metadata record for instant ALTER TABLE.
@param[in] row dummy or default values for existing columns
@param[in,out] heap memory heap for allocations
@return metadata record */
inline
dtuple_t*
dict_index_t::instant_metadata(const dtuple_t& row, mem_heap_t* heap) const
{
ut_ad(is_primary());
dtuple_t* entry;
if (!table->instant) {
entry = row_build_index_entry(&row, NULL, this, heap);
entry->info_bits = REC_INFO_METADATA_ADD;
return entry;
}
entry = dtuple_create(heap, n_fields + 1);
entry->n_fields_cmp = n_uniq;
entry->info_bits = REC_INFO_METADATA_ALTER;
const dict_field_t* field = fields;
for (uint i = 0; i <= n_fields; i++, field++) {
dfield_t* dfield = dtuple_get_nth_field(entry, i);
if (i == first_user_field()) {
table->serialise_columns(heap, dfield);
dfield->type.metadata_blob_init();
field--;
continue;
}
ut_ad(!field->col->is_virtual());
if (field->col->is_dropped()) {
dict_col_copy_type(field->col, &dfield->type);
if (field->col->is_nullable()) {
dfield_set_null(dfield);
} else {
dfield_set_data(dfield, field_ref_zero,
field->fixed_len);
}
continue;
}
const dfield_t* s = dtuple_get_nth_field(&row, field->col->ind);
ut_ad(dict_col_type_assert_equal(field->col, &s->type));
*dfield = *s;
if (dfield_is_null(dfield)) {
continue;
}
if (dfield_is_ext(dfield)) {
ut_ad(i > first_user_field());
ut_ad(!field->prefix_len);
ut_ad(dfield->len >= FIELD_REF_SIZE);
dfield_set_len(dfield, dfield->len - FIELD_REF_SIZE);
}
if (!field->prefix_len) {
continue;
}
ut_ad(field->col->ord_part);
ut_ad(i < n_uniq);
ulint len = dtype_get_at_most_n_mbchars(
field->col->prtype,
field->col->mbminlen, field->col->mbmaxlen,
field->prefix_len, dfield->len,
static_cast<char*>(dfield_get_data(dfield)));
dfield_set_len(dfield, len);
}
return entry;
}
/** Insert or update SYS_COLUMNS and the hidden metadata record
for instant ALTER TABLE.
@param[in] ha_alter_info ALTER TABLE context
@param[in,out] ctx ALTER TABLE context for the current partition
@param[in] altered_table MySQL table that is being altered
@param[in] table MySQL table as it is before the ALTER operation
@param[in,out] trx dictionary transaction
@retval true failure
@retval false success */
static bool innobase_instant_try(
const Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx* ctx,
const TABLE* altered_table,
const TABLE* table,
trx_t* trx)
{
DBUG_ASSERT(!ctx->need_rebuild());
DBUG_ASSERT(ctx->is_instant());
dict_table_t* user_table = ctx->old_table;
dict_index_t* index = dict_table_get_first_index(user_table);
const unsigned n_old_fields = index->n_fields;
const dict_col_t* old_cols = user_table->cols;
DBUG_ASSERT(user_table->n_cols == ctx->old_n_cols);
#ifdef BTR_CUR_HASH_ADAPT
/* Acquire the ahi latch to avoid a race condition
between ahi access and instant alter table */
srw_spin_lock* ahi_latch = btr_search_sys.get_latch(*index);
ahi_latch->wr_lock(SRW_LOCK_CALL);
#endif /* BTR_CUR_HASH_ADAPT */
const bool metadata_changed = ctx->instant_column();
#ifdef BTR_CUR_HASH_ADAPT
ahi_latch->wr_unlock();
#endif /* BTR_CUR_HASH_ADAPT */
DBUG_ASSERT(index->n_fields >= n_old_fields);
/* The table may have been emptied and may have lost its
'instantness' during this ALTER TABLE. */
/* Construct a table row of default values for the stored columns. */
dtuple_t* row = dtuple_create(ctx->heap, user_table->n_cols);
dict_table_copy_types(row, user_table);
Field** af = altered_table->field;
Field** const end = altered_table->field + altered_table->s->fields;
ut_d(List_iterator_fast<Create_field> cf_it(
ha_alter_info->alter_info->create_list));
if (ctx->first_alter_pos
&& innobase_instant_drop_cols(user_table->id,
ctx->first_alter_pos - 1, trx)) {
return true;
}
for (uint i = 0; af < end; af++) {
if (!(*af)->stored_in_db()) {
ut_d(cf_it++);
continue;
}
const dict_col_t* old = dict_table_t::find(old_cols,
ctx->col_map,
ctx->old_n_cols, i);
DBUG_ASSERT(!old || i >= ctx->old_n_cols - DATA_N_SYS_COLS
|| old->ind == i
|| (ctx->first_alter_pos
&& old->ind >= ctx->first_alter_pos - 1));
dfield_t* d = dtuple_get_nth_field(row, i);
const dict_col_t* col = dict_table_get_nth_col(user_table, i);
DBUG_ASSERT(!col->is_virtual());
DBUG_ASSERT(!col->is_dropped());
DBUG_ASSERT(col->mtype != DATA_SYS);
DBUG_ASSERT(!strcmp((*af)->field_name.str,
dict_table_get_col_name(user_table, i)));
DBUG_ASSERT(old || col->is_added());
ut_d(const Create_field* new_field = cf_it++);
/* new_field->field would point to an existing column.
If it is NULL, the column was added by this ALTER TABLE. */
ut_ad(!new_field->field == !old);
if (col->is_added()) {
dfield_set_data(d, col->def_val.data,
col->def_val.len);
} else if ((*af)->real_maybe_null()) {
/* Store NULL for nullable 'core' columns. */
dfield_set_null(d);
} else {
switch ((*af)->type()) {
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_LONG_BLOB:
variable_length:
/* Store the empty string for 'core'
variable-length NOT NULL columns. */
dfield_set_data(d, field_ref_zero, 0);
break;
case MYSQL_TYPE_STRING:
if (col->mbminlen != col->mbmaxlen
&& user_table->not_redundant()) {
goto variable_length;
}
/* fall through */
default:
/* For fixed-length NOT NULL 'core' columns,
get a dummy default value from SQL. Note that
we will preserve the old values of these
columns when updating the metadata
record, to avoid unnecessary updates. */
ulint len = (*af)->pack_length();
DBUG_ASSERT(d->type.mtype != DATA_INT
|| len <= 8);
row_mysql_store_col_in_innobase_format(
d, d->type.mtype == DATA_INT
? static_cast<byte*>(
mem_heap_alloc(ctx->heap, len))
: NULL, true, (*af)->ptr, len,
dict_table_is_comp(user_table));
ut_ad(new_field->field->pack_length() == len);
}
}
bool update = old && (!ctx->first_alter_pos
|| i < ctx->first_alter_pos - 1);
DBUG_ASSERT(!old || col->same_format(*old));
if (update
&& old->prtype == d->type.prtype) {
/* The record is already present in SYS_COLUMNS. */
} else if (innodb_insert_sys_columns(user_table->id, i,
(*af)->field_name.str,
d->type.mtype,
d->type.prtype,
d->type.len, 0, trx,
update)) {
return true;
}
i++;
}
if (innodb_update_cols(user_table, dict_table_encode_n_col(
unsigned(user_table->n_cols)
- DATA_N_SYS_COLS,
user_table->n_v_cols)
| (user_table->flags & DICT_TF_COMPACT) << 31,
trx)) {
return true;
}
if (ctx->first_alter_pos) {
add_all_virtual:
for (uint i = 0; i < user_table->n_v_cols; i++) {
if (innobase_add_one_virtual(
user_table,
dict_table_get_v_col_name(user_table, i),
&user_table->v_cols[i], trx)) {
return true;
}
}
} else if (ha_alter_info->handler_flags & ALTER_DROP_VIRTUAL_COLUMN) {
if (innobase_instant_drop_cols(user_table->id, 65536, trx)) {
return true;
}
goto add_all_virtual;
} else if ((ha_alter_info->handler_flags & ALTER_ADD_VIRTUAL_COLUMN)
&& innobase_add_virtual_try(ha_alter_info, user_table,
trx)) {
return true;
}
if (!user_table->space) {
/* In case of ALTER TABLE...DISCARD TABLESPACE,
update only the metadata and transform the dictionary
cache entry to the canonical format. */
index->clear_instant_alter();
return false;
}
unsigned i = unsigned(user_table->n_cols) - DATA_N_SYS_COLS;
DBUG_ASSERT(i >= altered_table->s->stored_fields);
DBUG_ASSERT(i <= altered_table->s->stored_fields + 1);
if (i > altered_table->s->fields) {
const dict_col_t& fts_doc_id = user_table->cols[i - 1];
DBUG_ASSERT(!strcmp(fts_doc_id.name(*user_table),
FTS_DOC_ID_COL_NAME));
DBUG_ASSERT(!fts_doc_id.is_nullable());
DBUG_ASSERT(fts_doc_id.len == 8);
dfield_set_data(dtuple_get_nth_field(row, i - 1),
field_ref_zero, fts_doc_id.len);
}
byte trx_id[DATA_TRX_ID_LEN], roll_ptr[DATA_ROLL_PTR_LEN];
dfield_set_data(dtuple_get_nth_field(row, i++), field_ref_zero,
DATA_ROW_ID_LEN);
dfield_set_data(dtuple_get_nth_field(row, i++), trx_id, sizeof trx_id);
dfield_set_data(dtuple_get_nth_field(row, i),roll_ptr,sizeof roll_ptr);
DBUG_ASSERT(i + 1 == user_table->n_cols);
trx_write_trx_id(trx_id, trx->id);
/* The DB_ROLL_PTR will be assigned later, when allocating undo log.
Silence a Valgrind warning in dtuple_validate() when
row_ins_clust_index_entry_low() searches for the insert position. */
memset(roll_ptr, 0, sizeof roll_ptr);
dtuple_t* entry = index->instant_metadata(*row, ctx->heap);
mtr_t mtr;
mtr.start();
index->set_modified(mtr);
btr_pcur_t pcur;
dberr_t err= pcur.open_leaf(true, index, BTR_MODIFY_TREE, &mtr);
if (err != DB_SUCCESS) {
func_exit:
mtr.commit();
if (err != DB_SUCCESS) {
my_error_innodb(err, table->s->table_name.str,
user_table->flags);
return true;
}
return false;
}
ut_ad(btr_pcur_is_before_first_on_page(&pcur));
buf_block_t* block = btr_pcur_get_block(&pcur);
ut_ad(page_is_leaf(block->page.frame));
ut_ad(!page_has_prev(block->page.frame));
ut_ad(!buf_block_get_page_zip(block));
const rec_t* rec = btr_pcur_move_to_next_on_page(&pcur);
if (UNIV_UNLIKELY(!rec)) {
err = DB_CORRUPTION;
goto func_exit;
}
que_thr_t* thr = pars_complete_graph_for_exec(
NULL, trx, ctx->heap, NULL);
page_id_t id{block->page.id()};
const bool is_root = id.page_no() == index->page;
if (rec_is_metadata(rec, *index)) {
ut_ad(page_rec_is_user_rec(rec));
if (is_root
&& !rec_is_alter_metadata(rec, *index)
&& !index->table->instant
&& !page_has_next(block->page.frame)
&& page_rec_is_last(rec, block->page.frame)) {
goto empty_table;
}
if (!metadata_changed) {
goto func_exit;
}
/* Ensure that the root page is in the correct format. */
id.set_page_no(index->page);
buf_block_t* root = mtr.get_already_latched(
id, MTR_MEMO_PAGE_SX_FIX);
if (UNIV_UNLIKELY(!root)) {
err = DB_CORRUPTION;
goto func_exit;
}
if (fil_page_get_type(root->page.frame)
!= FIL_PAGE_TYPE_INSTANT) {
DBUG_ASSERT("wrong page type" == 0);
err = DB_CORRUPTION;
goto func_exit;
}
btr_set_instant(root, *index, &mtr);
/* Extend the record with any added columns. */
uint n = uint(index->n_fields) - n_old_fields;
/* Reserve room for DB_TRX_ID,DB_ROLL_PTR and any
non-updated off-page columns in case they are moved off
page as a result of the update. */
const uint16_t f = user_table->instant != NULL;
upd_t* update = upd_create(index->n_fields + f, ctx->heap);
update->n_fields = n + f;
update->info_bits = f
? REC_INFO_METADATA_ALTER
: REC_INFO_METADATA_ADD;
if (f) {
upd_field_t* uf = upd_get_nth_field(update, 0);
uf->field_no = index->first_user_field();
uf->new_val = entry->fields[uf->field_no];
DBUG_ASSERT(!dfield_is_ext(&uf->new_val));
DBUG_ASSERT(!dfield_is_null(&uf->new_val));
}
/* Add the default values for instantly added columns */
unsigned j = f;
for (unsigned k = n_old_fields; k < index->n_fields; k++) {
upd_field_t* uf = upd_get_nth_field(update, j++);
uf->field_no = static_cast<uint16_t>(k + f);
uf->new_val = entry->fields[k + f];
ut_ad(j <= n + f);
}
ut_ad(j == n + f);
rec_offs* offsets = NULL;
mem_heap_t* offsets_heap = NULL;
big_rec_t* big_rec;
err = btr_cur_pessimistic_update(
BTR_NO_LOCKING_FLAG | BTR_KEEP_POS_FLAG,
btr_pcur_get_btr_cur(&pcur),
&offsets, &offsets_heap, ctx->heap,
&big_rec, update, UPD_NODE_NO_ORD_CHANGE,
thr, trx->id, &mtr);
if (err == DB_SUCCESS) {
offsets = rec_get_offsets(
btr_pcur_get_rec(&pcur), index, offsets,
index->n_core_fields, ULINT_UNDEFINED,
&offsets_heap);
}
if (big_rec) {
if (err == DB_SUCCESS) {
err = btr_store_big_rec_extern_fields(
&pcur, offsets, big_rec, &mtr,
BTR_STORE_UPDATE);
}
dtuple_big_rec_free(big_rec);
}
if (offsets_heap) {
mem_heap_free(offsets_heap);
}
ut_free(pcur.old_rec_buf);
goto func_exit;
} else if (is_root && page_rec_is_supremum(rec)
&& !index->table->instant) {
empty_table:
/* The table is empty. */
ut_ad(fil_page_index_page_check(block->page.frame));
ut_ad(!page_has_siblings(block->page.frame));
ut_ad(block->page.id().page_no() == index->page);
/* MDEV-17383: free metadata BLOBs! */
btr_page_empty(block, NULL, index, 0, &mtr);
if (index->is_instant()) {
index->clear_instant_add();
}
goto func_exit;
} else if (!user_table->is_instant()) {
ut_ad(!user_table->not_redundant());
goto func_exit;
}
/* Convert the table to the instant ALTER TABLE format. */
mtr.commit();
mtr.start();
if (buf_block_t* root = btr_root_block_get(index, RW_S_LATCH, &mtr,
&err)) {
if (fil_page_get_type(root->page.frame) != FIL_PAGE_INDEX) {
DBUG_ASSERT("wrong page type" == 0);
err = DB_CORRUPTION;
goto func_exit;
}
}
mtr.commit();
mtr.start();
err = row_ins_clust_index_entry_low(
BTR_NO_LOCKING_FLAG, BTR_MODIFY_TREE, index,
index->n_uniq, entry, 0, thr);
goto func_exit;
}
/** Adjust the create index column number from "New table" to
"old InnoDB table" while we are doing dropping virtual column. Since we do
not create separate new table for the dropping/adding virtual columns.
To correctly find the indexed column, we will need to find its col_no
in the "Old Table", not the "New table".
@param[in] ha_alter_info Data used during in-place alter
@param[in] old_table MySQL table as it is before the ALTER operation
@param[in] num_v_dropped number of virtual column dropped
@param[in,out] index_def index definition */
static
void
innodb_v_adjust_idx_col(
const Alter_inplace_info* ha_alter_info,
const TABLE* old_table,
ulint num_v_dropped,
index_def_t* index_def)
{
for (ulint i = 0; i < index_def->n_fields; i++) {
#ifdef UNIV_DEBUG
bool col_found = false;
#endif /* UNIV_DEBUG */
ulint num_v = 0;
index_field_t* index_field = &index_def->fields[i];
/* Only adjust virtual column col_no, since non-virtual
column position (in non-vcol list) won't change unless
table rebuild */
if (!index_field->is_v_col) {
continue;
}
const Field* field = NULL;
/* Found the field in the new table */
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
if (new_field.stored_in_db()) {
continue;
}
field = new_field.field;
if (num_v == index_field->col_no) {
break;
}
num_v++;
}
if (!field) {
/* this means the field is a newly added field, this
should have been blocked when we drop virtual column
at the same time */
ut_ad(num_v_dropped > 0);
ut_a(0);
}
ut_ad(!field->stored_in_db());
num_v = 0;
/* Look for its position in old table */
for (uint old_i = 0; old_table->field[old_i]; old_i++) {
if (old_table->field[old_i] == field) {
/* Found it, adjust its col_no to its position
in old table */
index_def->fields[i].col_no = num_v;
ut_d(col_found = true);
break;
}
num_v += !old_table->field[old_i]->stored_in_db();
}
ut_ad(col_found);
}
}
/** Create index metadata in the data dictionary.
@param[in,out] trx dictionary transaction
@param[in,out] index index being created
@param[in] mode encryption mode (for creating a table)
@param[in] key_id encryption key identifier (for creating a table)
@param[in] add_v virtual columns that are being added, or NULL
@return the created index */
MY_ATTRIBUTE((nonnull(1,2), warn_unused_result))
static
dict_index_t*
create_index_dict(
trx_t* trx,
dict_index_t* index,
fil_encryption_t mode,
uint32_t key_id,
const dict_add_v_col_t* add_v)
{
DBUG_ENTER("create_index_dict");
mem_heap_t* heap = mem_heap_create(512);
ind_node_t* node = ind_create_graph_create(
index, index->table->name.m_name, heap, mode, key_id, add_v);
que_thr_t* thr = pars_complete_graph_for_exec(node, trx, heap, NULL);
que_fork_start_command(
static_cast<que_fork_t*>(que_node_get_parent(thr)));
que_run_threads(thr);
DBUG_ASSERT(trx->error_state != DB_SUCCESS || index != node->index);
DBUG_ASSERT(trx->error_state != DB_SUCCESS || node->index);
index = node->index;
que_graph_free((que_t*) que_node_get_parent(thr));
DBUG_RETURN(index);
}
/** Update internal structures with concurrent writes blocked,
while preparing ALTER TABLE.
@param ha_alter_info Data used during in-place alter
@param altered_table MySQL table that is being altered
@param old_table MySQL table as it is before the ALTER operation
@param table_name Table name in MySQL
@param flags Table and tablespace flags
@param flags2 Additional table flags
@param fts_doc_id_col The column number of FTS_DOC_ID
@param add_fts_doc_id Flag: add column FTS_DOC_ID?
@param add_fts_doc_id_idx Flag: add index FTS_DOC_ID_INDEX (FTS_DOC_ID)?
@retval true Failure
@retval false Success
*/
static MY_ATTRIBUTE((warn_unused_result, nonnull(1,2,3,4)))
bool
prepare_inplace_alter_table_dict(
/*=============================*/
Alter_inplace_info* ha_alter_info,
const TABLE* altered_table,
const TABLE* old_table,
const char* table_name,
ulint flags,
ulint flags2,
ulint fts_doc_id_col,
bool add_fts_doc_id,
bool add_fts_doc_id_idx)
{
bool dict_locked = false;
ulint* add_key_nums; /* MySQL key numbers */
index_def_t* index_defs; /* index definitions */
dict_table_t* user_table;
dict_index_t* fts_index = NULL;
bool new_clustered = false;
dberr_t error = DB_SUCCESS;
ulint num_fts_index;
dict_add_v_col_t* add_v = NULL;
bool fts_instance_created = false;
ha_innobase_inplace_ctx*ctx;
DBUG_ENTER("prepare_inplace_alter_table_dict");
ctx = static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx);
DBUG_ASSERT((ctx->add_autoinc != ULINT_UNDEFINED)
== (ctx->sequence.max_value() > 0));
DBUG_ASSERT(!ctx->num_to_drop_index == !ctx->drop_index);
DBUG_ASSERT(!ctx->num_to_drop_fk == !ctx->drop_fk);
DBUG_ASSERT(!add_fts_doc_id || add_fts_doc_id_idx);
DBUG_ASSERT(!add_fts_doc_id_idx
|| innobase_fulltext_exist(altered_table));
DBUG_ASSERT(!ctx->defaults);
DBUG_ASSERT(!ctx->add_index);
DBUG_ASSERT(!ctx->add_key_numbers);
DBUG_ASSERT(!ctx->num_to_add_index);
DBUG_ASSERT(!(ha_alter_info->create_info->used_fields
& HA_CREATE_USED_SEQUENCE));
user_table = ctx->new_table;
switch (ha_alter_info->inplace_supported) {
default: break;
case HA_ALTER_INPLACE_INSTANT:
case HA_ALTER_INPLACE_NOCOPY_LOCK:
case HA_ALTER_INPLACE_NOCOPY_NO_LOCK:
/* If we promised ALGORITHM=NOCOPY or ALGORITHM=INSTANT,
we must retain the original ROW_FORMAT of the table. */
flags = (user_table->flags & (DICT_TF_MASK_COMPACT
| DICT_TF_MASK_ZIP_SSIZE
| DICT_TF_MASK_ATOMIC_BLOBS))
| (flags & ~(DICT_TF_MASK_COMPACT
| DICT_TF_MASK_ZIP_SSIZE
| DICT_TF_MASK_ATOMIC_BLOBS));
}
trx_start_if_not_started_xa(ctx->prebuilt->trx, true);
if (ha_alter_info->handler_flags
& ALTER_DROP_VIRTUAL_COLUMN) {
if (prepare_inplace_drop_virtual(ha_alter_info, old_table)) {
DBUG_RETURN(true);
}
}
if (ha_alter_info->handler_flags
& ALTER_ADD_VIRTUAL_COLUMN) {
if (prepare_inplace_add_virtual(
ha_alter_info, altered_table, old_table)) {
DBUG_RETURN(true);
}
/* Need information for newly added virtual columns
for create index */
if (ha_alter_info->handler_flags
& ALTER_ADD_NON_UNIQUE_NON_PRIM_INDEX) {
for (ulint i = 0; i < ctx->num_to_add_vcol; i++) {
/* Set mbminmax for newly added column */
dict_col_t& col = ctx->add_vcol[i].m_col;
unsigned mbminlen, mbmaxlen;
dtype_get_mblen(col.mtype, col.prtype,
&mbminlen, &mbmaxlen);
col.mbminlen = mbminlen & 7;
col.mbmaxlen = mbmaxlen & 7;
}
add_v = static_cast<dict_add_v_col_t*>(
mem_heap_alloc(ctx->heap, sizeof *add_v));
add_v->n_v_col = ctx->num_to_add_vcol;
add_v->v_col = ctx->add_vcol;
add_v->v_col_name = ctx->add_vcol_name;
}
}
/* There should be no order change for virtual columns coming in
here */
ut_ad(check_v_col_in_order(old_table, altered_table, ha_alter_info));
/* Create table containing all indexes to be built in this
ALTER TABLE ADD INDEX so that they are in the correct order
in the table. */
ctx->num_to_add_index = ha_alter_info->index_add_count;
ut_ad(ctx->prebuilt->trx->mysql_thd != NULL);
const char* path = thd_innodb_tmpdir(
ctx->prebuilt->trx->mysql_thd);
index_defs = ctx->create_key_defs(
ha_alter_info, altered_table,
num_fts_index,
fts_doc_id_col, add_fts_doc_id, add_fts_doc_id_idx,
old_table);
new_clustered = (DICT_CLUSTERED & index_defs[0].ind_type) != 0;
create_table_info_t info(ctx->prebuilt->trx->mysql_thd, altered_table,
ha_alter_info->create_info, NULL, NULL,
srv_file_per_table);
/* The primary index would be rebuilt if a FTS Doc ID
column is to be added, and the primary index definition
is just copied from old table and stored in indexdefs[0] */
DBUG_ASSERT(!add_fts_doc_id || new_clustered);
DBUG_ASSERT(!!new_clustered ==
(innobase_need_rebuild(ha_alter_info, old_table)
|| add_fts_doc_id));
/* Allocate memory for dictionary index definitions */
ctx->add_index = static_cast<dict_index_t**>(
mem_heap_zalloc(ctx->heap, ctx->num_to_add_index
* sizeof *ctx->add_index));
ctx->add_key_numbers = add_key_nums = static_cast<ulint*>(
mem_heap_alloc(ctx->heap, ctx->num_to_add_index
* sizeof *ctx->add_key_numbers));
const bool have_fts = user_table->flags2
& (DICT_TF2_FTS_HAS_DOC_ID | DICT_TF2_FTS);
const bool pause_purge = have_fts || user_table->get_ref_count() > 1;
/* Acquire a lock on the table before creating any indexes. */
bool table_lock_failed = false;
if (!ctx->online) {
acquire_lock:
ctx->prebuilt->trx->op_info = "acquiring table lock";
error = lock_table_for_trx(user_table, ctx->trx, LOCK_S);
} else if (add_key_nums) {
/* FIXME: trx_resurrect_table_locks() will not resurrect
MDL for any recovered transactions that may hold locks on
the table. We will prevent race conditions by "unnecessarily"
acquiring an InnoDB table lock even for online operation,
to ensure that the rollback of recovered transactions will
not run concurrently with online ADD INDEX. */
user_table->lock_shared_lock();
for (lock_t *lock = UT_LIST_GET_FIRST(user_table->locks);
lock;
lock = UT_LIST_GET_NEXT(un_member.tab_lock.locks, lock)) {
if (lock->trx->is_recovered) {
user_table->lock_shared_unlock();
goto acquire_lock;
}
}
user_table->lock_shared_unlock();
}
if (pause_purge) {
purge_sys.stop_FTS();
if (have_fts) {
purge_sys.stop_FTS(*user_table, true);
}
if (error == DB_SUCCESS) {
error = fts_lock_tables(ctx->trx, *user_table);
}
}
ut_ad(user_table->get_ref_count() == 1);
if (error == DB_SUCCESS) {
error = lock_sys_tables(ctx->trx);
}
if (error != DB_SUCCESS) {
table_lock_failed = true;
goto error_handling;
}
/* Latch the InnoDB data dictionary exclusively so that no deadlocks
or lock waits can happen in it during an index create operation. */
row_mysql_lock_data_dictionary(ctx->trx);
dict_locked = true;
online_retry_drop_indexes_low(ctx->new_table, ctx->trx);
ut_d(dict_table_check_for_dup_indexes(
ctx->new_table, CHECK_ABORTED_OK));
DBUG_EXECUTE_IF("innodb_OOM_prepare_inplace_alter",
error = DB_OUT_OF_MEMORY;
goto error_handling;);
/* If a new clustered index is defined for the table we need
to rebuild the table with a temporary name. */
if (new_clustered) {
if (innobase_check_foreigns(
ha_alter_info, old_table,
user_table, ctx->drop_fk, ctx->num_to_drop_fk,
thd_is_strict_mode(ctx->trx->mysql_thd))) {
new_clustered_failed:
DBUG_ASSERT(ctx->trx != ctx->prebuilt->trx);
ctx->trx->rollback();
ut_ad(user_table->get_ref_count() == 1);
if (user_table->drop_aborted) {
row_mysql_unlock_data_dictionary(ctx->trx);
trx_start_for_ddl(ctx->trx);
if (lock_sys_tables(ctx->trx) == DB_SUCCESS) {
row_mysql_lock_data_dictionary(
ctx->trx);
online_retry_drop_indexes_low(
user_table, ctx->trx);
commit_unlock_and_unlink(ctx->trx);
} else {
ctx->trx->commit();
}
row_mysql_lock_data_dictionary(ctx->trx);
}
if (ctx->need_rebuild()) {
if (ctx->new_table) {
ut_ad(!ctx->new_table->cached);
dict_mem_table_free(ctx->new_table);
}
ctx->new_table = ctx->old_table;
}
while (ctx->num_to_add_index--) {
if (dict_index_t*& i = ctx->add_index[
ctx->num_to_add_index]) {
dict_mem_index_free(i);
i = NULL;
}
}
goto err_exit;
}
size_t prefixlen= strlen(mysql_data_home);
if (mysql_data_home[prefixlen-1] != FN_LIBCHAR)
prefixlen++;
size_t tablen = altered_table->s->path.length - prefixlen;
const char* part = ctx->old_table->name.part();
size_t partlen = part ? strlen(part) : 0;
char* new_table_name = static_cast<char*>(
mem_heap_alloc(ctx->heap, tablen + partlen + 1));
memcpy(new_table_name,
altered_table->s->path.str + prefixlen, tablen);
#ifdef _WIN32
{
char *sep= strchr(new_table_name, FN_LIBCHAR);
sep[0]= '/';
}
#endif
memcpy(new_table_name + tablen, part ? part : "", partlen + 1);
ulint n_cols = 0;
ulint n_v_cols = 0;
dtuple_t* defaults;
ulint z = 0;
for (uint i = 0; i < altered_table->s->fields; i++) {
const Field* field = altered_table->field[i];
if (!field->stored_in_db()) {
n_v_cols++;
} else {
n_cols++;
}
}
ut_ad(n_cols + n_v_cols == altered_table->s->fields);
if (add_fts_doc_id) {
n_cols++;
DBUG_ASSERT(flags2 & DICT_TF2_FTS);
DBUG_ASSERT(add_fts_doc_id_idx);
flags2 |= DICT_TF2_FTS_ADD_DOC_ID
| DICT_TF2_FTS_HAS_DOC_ID
| DICT_TF2_FTS;
}
DBUG_ASSERT(!add_fts_doc_id_idx || (flags2 & DICT_TF2_FTS));
ctx->new_table = dict_table_t::create(
{new_table_name, tablen + partlen}, nullptr,
n_cols + n_v_cols, n_v_cols, flags, flags2);
fts_instance_created = (ctx->new_table->fts != nullptr);
/* The rebuilt indexed_table will use the renamed
column names. */
ctx->col_names = NULL;
if (DICT_TF_HAS_DATA_DIR(flags)) {
ctx->new_table->data_dir_path =
mem_heap_strdup(ctx->new_table->heap,
user_table->data_dir_path);
}
for (uint i = 0; i < altered_table->s->fields; i++) {
const Field* field = altered_table->field[i];
unsigned is_unsigned;
auto col_type = get_innobase_type_from_mysql_type(
&is_unsigned, field);
unsigned field_type = field->type() | is_unsigned;
const bool is_virtual = !field->stored_in_db();
/* we assume in dtype_form_prtype() that this
fits in two bytes */
ut_a(field_type <= MAX_CHAR_COLL_NUM);
if (!field->real_maybe_null()) {
field_type |= DATA_NOT_NULL;
}
if (field->binary()) {
field_type |= DATA_BINARY_TYPE;
}
if (altered_table->versioned()) {
if (i == altered_table->s->vers.start_fieldno) {
field_type |= DATA_VERS_START;
} else if (i ==
altered_table->s->vers.end_fieldno) {
field_type |= DATA_VERS_END;
} else if (!(field->flags
& VERS_UPDATE_UNVERSIONED_FLAG)) {
field_type |= DATA_VERSIONED;
}
}
unsigned charset_no;
if (dtype_is_string_type(col_type)) {
charset_no = field->charset()->number;
if (charset_no > MAX_CHAR_COLL_NUM) {
my_error(ER_WRONG_KEY_COLUMN, MYF(0), "InnoDB",
field->field_name.str);
goto new_clustered_failed;
}
} else {
charset_no = 0;
}
auto col_len = field->pack_length();
/* The MySQL pack length contains 1 or 2 bytes
length field for a true VARCHAR. Let us
subtract that, so that the InnoDB column
length in the InnoDB data dictionary is the
real maximum byte length of the actual data. */
if (field->type() == MYSQL_TYPE_VARCHAR) {
uint32 length_bytes
= static_cast<const Field_varstring*>(
field)->length_bytes;
col_len -= length_bytes;
if (length_bytes == 2) {
field_type |= DATA_LONG_TRUE_VARCHAR;
}
}
if (dict_col_name_is_reserved(field->field_name.str)) {
wrong_column_name:
dict_mem_table_free(ctx->new_table);
ctx->new_table = ctx->old_table;
my_error(ER_WRONG_COLUMN_NAME, MYF(0),
field->field_name.str);
goto new_clustered_failed;
}
/** Note the FTS_DOC_ID name is case sensitive due
to internal query parser.
FTS_DOC_ID column must be of BIGINT NOT NULL type
and it should be in all capitalized characters */
if (!innobase_strcasecmp(field->field_name.str,
FTS_DOC_ID_COL_NAME)) {
if (col_type != DATA_INT
|| field->real_maybe_null()
|| col_len != sizeof(doc_id_t)
|| strcmp(field->field_name.str,
FTS_DOC_ID_COL_NAME)) {
goto wrong_column_name;
}
}
if (is_virtual) {
dict_mem_table_add_v_col(
ctx->new_table, ctx->heap,
field->field_name.str,
col_type,
dtype_form_prtype(
field_type, charset_no)
| DATA_VIRTUAL,
col_len, i, 0);
} else {
dict_mem_table_add_col(
ctx->new_table, ctx->heap,
field->field_name.str,
col_type,
dtype_form_prtype(
field_type, charset_no),
col_len);
}
}
if (n_v_cols) {
for (uint i = 0; i < altered_table->s->fields; i++) {
dict_v_col_t* v_col;
const Field* field = altered_table->field[i];
if (!!field->stored_in_db()) {
continue;
}
v_col = dict_table_get_nth_v_col(
ctx->new_table, z);
z++;
innodb_base_col_setup(
ctx->new_table, field, v_col);
}
}
if (add_fts_doc_id) {
fts_add_doc_id_column(ctx->new_table, ctx->heap);
ctx->new_table->fts->doc_col = fts_doc_id_col;
ut_ad(fts_doc_id_col
== altered_table->s->fields - n_v_cols);
} else if (ctx->new_table->fts) {
ctx->new_table->fts->doc_col = fts_doc_id_col;
}
dict_table_add_system_columns(ctx->new_table, ctx->heap);
if (ha_alter_info->handler_flags & INNOBASE_DEFAULTS) {
defaults = dtuple_create_with_vcol(
ctx->heap,
dict_table_get_n_cols(ctx->new_table),
dict_table_get_n_v_cols(ctx->new_table));
dict_table_copy_types(defaults, ctx->new_table);
} else {
defaults = NULL;
}
ctx->col_map = innobase_build_col_map(
ha_alter_info, altered_table, old_table,
ctx->new_table, user_table, defaults, ctx->heap);
ctx->defaults = defaults;
} else {
DBUG_ASSERT(!innobase_need_rebuild(ha_alter_info, old_table));
DBUG_ASSERT(old_table->s->primary_key
== altered_table->s->primary_key);
for (dict_index_t* index
= dict_table_get_first_index(user_table);
index != NULL;
index = dict_table_get_next_index(index)) {
if (!index->to_be_dropped && index->is_corrupted()) {
my_error(ER_CHECK_NO_SUCH_TABLE, MYF(0));
goto error_handled;
}
}
for (dict_index_t* index
= dict_table_get_first_index(user_table);
index != NULL;
index = dict_table_get_next_index(index)) {
if (!index->to_be_dropped && index->is_corrupted()) {
my_error(ER_CHECK_NO_SUCH_TABLE, MYF(0));
goto error_handled;
}
}
if (!ctx->new_table->fts
&& innobase_fulltext_exist(altered_table)) {
ctx->new_table->fts = fts_create(
ctx->new_table);
ctx->new_table->fts->doc_col = fts_doc_id_col;
fts_instance_created = true;
}
/* Check if we need to update mtypes of legacy GIS columns.
This check is only needed when we don't have to rebuild
the table, since rebuild would update all mtypes for GIS
columns */
error = innobase_check_gis_columns(
ha_alter_info, ctx->new_table, ctx->trx);
if (error != DB_SUCCESS) {
ut_ad(error == DB_ERROR);
my_error(ER_TABLE_CANT_HANDLE_SPKEYS, MYF(0), "SYS_COLUMNS");
goto error_handled;
}
}
ut_ad(new_clustered == ctx->need_rebuild());
/* Create the index metadata. */
for (ulint a = 0; a < ctx->num_to_add_index; a++) {
if (index_defs[a].ind_type & DICT_VIRTUAL
&& ctx->num_to_drop_vcol > 0 && !new_clustered) {
innodb_v_adjust_idx_col(ha_alter_info, old_table,
ctx->num_to_drop_vcol,
&index_defs[a]);
}
ctx->add_index[a] = row_merge_create_index(
ctx->new_table, &index_defs[a], add_v);
add_key_nums[a] = index_defs[a].key_number;
DBUG_ASSERT(ctx->add_index[a]->is_committed()
== !!new_clustered);
}
DBUG_ASSERT(!ctx->need_rebuild()
|| !ctx->new_table->persistent_autoinc);
if (ctx->need_rebuild() && instant_alter_column_possible(
*user_table, ha_alter_info, old_table, altered_table,
ha_innobase::is_innodb_strict_mode(ctx->trx->mysql_thd))) {
for (uint a = 0; a < ctx->num_to_add_index; a++) {
ctx->add_index[a]->table = ctx->new_table;
error = dict_index_add_to_cache(
ctx->add_index[a], FIL_NULL, add_v);
ut_a(error == DB_SUCCESS);
}
DBUG_ASSERT(ha_alter_info->key_count
/* hidden GEN_CLUST_INDEX in InnoDB */
+ dict_index_is_auto_gen_clust(
dict_table_get_first_index(ctx->new_table))
/* hidden FTS_DOC_ID_INDEX in InnoDB */
+ (ctx->old_table->fts_doc_id_index
&& innobase_fts_check_doc_id_index_in_def(
altered_table->s->keys,
altered_table->key_info)
!= FTS_EXIST_DOC_ID_INDEX)
== ctx->num_to_add_index);
ctx->num_to_add_index = 0;
ctx->add_index = NULL;
uint i = 0; // index of stored columns ctx->new_table->cols[]
Field **af = altered_table->field;
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
DBUG_ASSERT(!new_field.field
|| std::find(old_table->field,
old_table->field
+ old_table->s->fields,
new_field.field) !=
old_table->field + old_table->s->fields);
DBUG_ASSERT(new_field.field
|| !strcmp(new_field.field_name.str,
(*af)->field_name.str));
if (!(*af)->stored_in_db()) {
af++;
continue;
}
dict_col_t* col = dict_table_get_nth_col(
ctx->new_table, i);
DBUG_ASSERT(!strcmp((*af)->field_name.str,
dict_table_get_col_name(ctx->new_table,
i)));
DBUG_ASSERT(!col->is_added());
if (new_field.field) {
/* This is a pre-existing column,
possibly at a different position. */
} else if ((*af)->is_real_null()) {
/* DEFAULT NULL */
col->def_val.len = UNIV_SQL_NULL;
} else {
switch ((*af)->type()) {
case MYSQL_TYPE_VARCHAR:
col->def_val.len = reinterpret_cast
<const Field_varstring*>
((*af))->get_length();
col->def_val.data = reinterpret_cast
<const Field_varstring*>
((*af))->get_data();
break;
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_LONG_BLOB:
col->def_val.len = reinterpret_cast
<const Field_blob*>
((*af))->get_length();
col->def_val.data = reinterpret_cast
<const Field_blob*>
((*af))->get_ptr();
break;
default:
dfield_t d;
dict_col_copy_type(col, &d.type);
ulint len = (*af)->pack_length();
DBUG_ASSERT(len <= 8
|| d.type.mtype
!= DATA_INT);
row_mysql_store_col_in_innobase_format(
&d,
d.type.mtype == DATA_INT
? static_cast<byte*>(
mem_heap_alloc(
ctx->heap,
len))
: NULL,
true, (*af)->ptr, len,
dict_table_is_comp(
user_table));
col->def_val.len = d.len;
col->def_val.data = d.data;
}
}
i++;
af++;
}
DBUG_ASSERT(af == altered_table->field
+ altered_table->s->fields);
/* There might exist a hidden FTS_DOC_ID column for
FULLTEXT INDEX. If it exists, the columns should have
been implicitly added by ADD FULLTEXT INDEX together
with instant ADD COLUMN. (If a hidden FTS_DOC_ID pre-existed,
then the ctx->col_map[] check should have prevented
adding visible user columns after that.) */
DBUG_ASSERT(DATA_N_SYS_COLS + i == ctx->new_table->n_cols
|| (1 + DATA_N_SYS_COLS + i
== ctx->new_table->n_cols
&& !strcmp(dict_table_get_col_name(
ctx->new_table, i),
FTS_DOC_ID_COL_NAME)));
if (altered_table->found_next_number_field) {
ctx->new_table->persistent_autoinc
= ctx->old_table->persistent_autoinc;
}
ctx->prepare_instant();
}
if (ctx->need_rebuild()) {
DBUG_ASSERT(ctx->need_rebuild());
DBUG_ASSERT(!ctx->is_instant());
DBUG_ASSERT(num_fts_index <= 1);
DBUG_ASSERT(!ctx->online || num_fts_index == 0);
DBUG_ASSERT(!ctx->online
|| !ha_alter_info->mdl_exclusive_after_prepare
|| ctx->add_autoinc == ULINT_UNDEFINED);
DBUG_ASSERT(!ctx->online
|| !innobase_need_rebuild(ha_alter_info, old_table)
|| !innobase_fulltext_exist(altered_table));
uint32_t key_id = FIL_DEFAULT_ENCRYPTION_KEY;
fil_encryption_t mode = FIL_ENCRYPTION_DEFAULT;
if (fil_space_t* s = user_table->space) {
if (const fil_space_crypt_t* c = s->crypt_data) {
key_id = c->key_id;
mode = c->encryption;
}
}
if (ha_alter_info->handler_flags & ALTER_OPTIONS) {
const ha_table_option_struct& alt_opt=
*ha_alter_info->create_info->option_struct;
const ha_table_option_struct& opt=
*old_table->s->option_struct;
if (alt_opt.encryption != opt.encryption
|| alt_opt.encryption_key_id
!= opt.encryption_key_id) {
key_id = uint32_t(alt_opt.encryption_key_id);
mode = fil_encryption_t(alt_opt.encryption);
}
}
if (dict_sys.find_table(
{ctx->new_table->name.m_name,
strlen(ctx->new_table->name.m_name)})) {
my_error(ER_TABLE_EXISTS_ERROR, MYF(0),
ctx->new_table->name.m_name);
goto new_clustered_failed;
}
/* Create the table. */
ctx->trx->dict_operation = true;
error = row_create_table_for_mysql(ctx->new_table, ctx->trx);
switch (error) {
case DB_SUCCESS:
DBUG_ASSERT(ctx->new_table->get_ref_count() == 0);
DBUG_ASSERT(ctx->new_table->id != 0);
break;
case DB_DUPLICATE_KEY:
my_error(HA_ERR_TABLE_EXIST, MYF(0),
altered_table->s->table_name.str);
goto new_table_failed;
case DB_UNSUPPORTED:
my_error(ER_UNSUPPORTED_EXTENSION, MYF(0),
altered_table->s->table_name.str);
goto new_table_failed;
default:
my_error_innodb(error, table_name, flags);
new_table_failed:
DBUG_ASSERT(ctx->trx != ctx->prebuilt->trx);
ctx->new_table = NULL;
goto new_clustered_failed;
}
for (ulint a = 0; a < ctx->num_to_add_index; a++) {
dict_index_t* index = ctx->add_index[a];
const ulint n_v_col = index->get_new_n_vcol();
index = create_index_dict(ctx->trx, index,
mode, key_id, add_v);
error = ctx->trx->error_state;
if (error != DB_SUCCESS) {
if (index) {
dict_mem_index_free(index);
}
error_handling_drop_uncached_1:
while (++a < ctx->num_to_add_index) {
dict_mem_index_free(ctx->add_index[a]);
}
goto error_handling;
} else {
DBUG_ASSERT(index != ctx->add_index[a]);
}
ctx->add_index[a] = index;
/* For ALTER TABLE...FORCE or OPTIMIZE TABLE,
we may only issue warnings, because there will
be no schema change from the user perspective. */
if (!info.row_size_is_acceptable(
*index,
!!(ha_alter_info->handler_flags
& ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_NOVALIDATE
| ALTER_RECREATE_TABLE)))) {
error = DB_TOO_BIG_RECORD;
goto error_handling_drop_uncached_1;
}
index->parser = index_defs[a].parser;
if (n_v_col) {
index->assign_new_v_col(n_v_col);
}
/* Note the id of the transaction that created this
index, we use it to restrict readers from accessing
this index, to ensure read consistency. */
ut_ad(index->trx_id == ctx->trx->id);
if (index->type & DICT_FTS) {
DBUG_ASSERT(num_fts_index == 1);
DBUG_ASSERT(!fts_index);
DBUG_ASSERT(index->type == DICT_FTS);
fts_index = ctx->add_index[a];
}
}
dict_index_t* clust_index = dict_table_get_first_index(
user_table);
dict_index_t* new_clust_index = dict_table_get_first_index(
ctx->new_table);
ut_ad(!new_clust_index->is_instant());
/* row_merge_build_index() depends on the correct value */
ut_ad(new_clust_index->n_core_null_bytes
== UT_BITS_IN_BYTES(new_clust_index->n_nullable));
if (const Field* ai = altered_table->found_next_number_field) {
const unsigned col_no = innodb_col_no(ai);
ctx->new_table->persistent_autoinc =
(dict_table_get_nth_col_pos(
ctx->new_table, col_no, NULL) + 1)
& dict_index_t::MAX_N_FIELDS;
/* Initialize the AUTO_INCREMENT sequence
to the rebuilt table from the old one. */
if (!old_table->found_next_number_field
|| !user_table->space) {
} else if (ib_uint64_t autoinc
= btr_read_autoinc(clust_index)) {
btr_write_autoinc(new_clust_index, autoinc);
}
}
ctx->skip_pk_sort = innobase_pk_order_preserved(
ctx->col_map, clust_index, new_clust_index);
DBUG_EXECUTE_IF("innodb_alter_table_pk_assert_no_sort",
DBUG_ASSERT(ctx->skip_pk_sort););
if (ctx->online) {
/* Allocate a log for online table rebuild. */
clust_index->lock.x_lock(SRW_LOCK_CALL);
bool ok = row_log_allocate(
ctx->prebuilt->trx,
clust_index, ctx->new_table,
!(ha_alter_info->handler_flags
& ALTER_ADD_PK_INDEX),
ctx->defaults, ctx->col_map, path,
old_table,
ctx->allow_not_null);
clust_index->lock.x_unlock();
if (!ok) {
error = DB_OUT_OF_MEMORY;
goto error_handling;
}
}
} else if (ctx->num_to_add_index) {
ut_ad(!ctx->is_instant());
for (ulint a = 0; a < ctx->num_to_add_index; a++) {
dict_index_t* index = ctx->add_index[a];
const ulint n_v_col = index->get_new_n_vcol();
DBUG_EXECUTE_IF(
"create_index_metadata_fail",
if (a + 1 == ctx->num_to_add_index) {
ctx->trx->error_state =
DB_OUT_OF_FILE_SPACE;
goto index_created;
});
index = create_index_dict(ctx->trx, index,
FIL_ENCRYPTION_DEFAULT,
FIL_DEFAULT_ENCRYPTION_KEY,
add_v);
#ifndef DBUG_OFF
index_created:
#endif
error = ctx->trx->error_state;
if (error != DB_SUCCESS) {
if (index) {
dict_mem_index_free(index);
}
error_handling_drop_uncached:
while (++a < ctx->num_to_add_index) {
dict_mem_index_free(ctx->add_index[a]);
}
goto error_handling;
} else {
DBUG_ASSERT(index != ctx->add_index[a]);
}
ctx->add_index[a]= index;
if (!info.row_size_is_acceptable(*index, true)) {
error = DB_TOO_BIG_RECORD;
goto error_handling_drop_uncached;
}
index->parser = index_defs[a].parser;
if (n_v_col) {
index->assign_new_v_col(n_v_col);
}
ctx->change_col_collation(index, *altered_table);
/* Note the id of the transaction that created this
index, we use it to restrict readers from accessing
this index, to ensure read consistency. */
ut_ad(index->trx_id == ctx->trx->id);
/* If ADD INDEX with LOCK=NONE has been
requested, allocate a modification log. */
if (index->type & DICT_FTS) {
DBUG_ASSERT(num_fts_index == 1);
DBUG_ASSERT(!fts_index);
DBUG_ASSERT(index->type == DICT_FTS);
fts_index = ctx->add_index[a];
/* Fulltext indexes are not covered
by a modification log. */
} else if (!ctx->online
|| !user_table->is_readable()
|| !user_table->space) {
/* No need to allocate a modification log. */
DBUG_ASSERT(!index->online_log);
} else {
index->lock.x_lock(SRW_LOCK_CALL);
bool ok = row_log_allocate(
ctx->prebuilt->trx,
index,
NULL, true, NULL, NULL,
path, old_table,
ctx->allow_not_null);
index->lock.x_unlock();
DBUG_EXECUTE_IF(
"innodb_OOM_prepare_add_index",
if (ok && a == 1) {
row_log_free(
index->online_log);
index->online_log = NULL;
ctx->old_table->indexes.start
->online_log = nullptr;
ok = false;
});
if (!ok) {
error = DB_OUT_OF_MEMORY;
goto error_handling_drop_uncached;
}
}
}
} else if (ctx->is_instant()
&& !info.row_size_is_acceptable(*user_table, true)) {
error = DB_TOO_BIG_RECORD;
goto error_handling;
}
if (ctx->online && ctx->num_to_add_index) {
/* Assign a consistent read view for
row_merge_read_clustered_index(). */
ctx->prebuilt->trx->read_view.open(ctx->prebuilt->trx);
}
if (fts_index) {
ut_ad(ctx->trx->dict_operation);
ut_ad(ctx->trx->dict_operation_lock_mode);
ut_ad(dict_sys.locked());
DICT_TF2_FLAG_SET(ctx->new_table, DICT_TF2_FTS);
if (ctx->need_rebuild()) {
/* For !ctx->need_rebuild(), this will be set at
commit_cache_norebuild(). */
ctx->new_table->fts_doc_id_index
= dict_table_get_index_on_name(
ctx->new_table, FTS_DOC_ID_INDEX_NAME);
DBUG_ASSERT(ctx->new_table->fts_doc_id_index != NULL);
}
error = fts_create_index_tables(ctx->trx, fts_index,
ctx->new_table->id);
DBUG_EXECUTE_IF("innodb_test_fail_after_fts_index_table",
error = DB_LOCK_WAIT_TIMEOUT;
goto error_handling;);
if (error != DB_SUCCESS) {
goto error_handling;
}
/* If table rebuild happens or fulltext index are
being added when common tables doesn't exist then
do create new fulltext common tables else use the
existing fulltext common tables */
if (fts_instance_created) {
error = fts_create_common_tables(
ctx->trx, ctx->new_table, true);
DBUG_EXECUTE_IF(
"innodb_test_fail_after_fts_common_table",
error = DB_LOCK_WAIT_TIMEOUT;);
if (error != DB_SUCCESS) {
goto error_handling;
}
}
if (!ib_vector_size(ctx->new_table->fts->indexes)) {
error = innobase_fts_load_stopword(
ctx->new_table, ctx->trx,
ctx->prebuilt->trx->mysql_thd)
? DB_SUCCESS : DB_ERROR;
if (error != DB_SUCCESS) {
goto error_handling;
}
}
}
DBUG_ASSERT(error == DB_SUCCESS);
{
/* Commit the data dictionary transaction in order to release
the table locks on the system tables. This means that if
MariaDB is killed while rebuilding the table inside
row_merge_build_indexes(), ctx->new_table will not be dropped
by trx_rollback_active(). */
ut_d(dict_table_check_for_dup_indexes(user_table,
CHECK_PARTIAL_OK));
if (ctx->need_rebuild()) {
export_vars.innodb_bulk_operations++;
ctx->new_table->acquire();
}
/* fts_create_common_tables() may drop old common tables,
whose files would be deleted here. */
commit_unlock_and_unlink(ctx->trx);
if (pause_purge) {
purge_sys.resume_FTS();
}
trx_start_for_ddl(ctx->trx);
ctx->prebuilt->trx_id = ctx->trx->id;
}
if (ctx->old_table->fts) {
fts_sync_during_ddl(ctx->old_table);
}
DBUG_RETURN(false);
error_handling:
/* After an error, remove all those index definitions from the
dictionary which were defined. */
switch (error) {
case DB_TABLESPACE_EXISTS:
my_error(ER_TABLESPACE_EXISTS, MYF(0), "(unknown)");
break;
case DB_DUPLICATE_KEY:
my_error(ER_DUP_KEY, MYF(0), "SYS_INDEXES");
break;
default:
my_error_innodb(error, table_name, user_table->flags);
}
ctx->trx->rollback();
ut_ad(!ctx->need_rebuild()
|| !user_table->indexes.start->online_log);
ctx->prebuilt->trx->error_info = NULL;
ctx->trx->error_state = DB_SUCCESS;
if (false) {
error_handled:
ut_ad(!table_lock_failed);
ut_ad(ctx->trx->state == TRX_STATE_ACTIVE);
ut_ad(!ctx->trx->undo_no);
ut_ad(dict_locked);
} else if (table_lock_failed) {
if (!dict_locked) {
row_mysql_lock_data_dictionary(ctx->trx);
}
goto err_exit;
} else {
ut_ad(ctx->trx->state == TRX_STATE_NOT_STARTED);
if (new_clustered && !user_table->drop_aborted) {
goto err_exit;
}
if (dict_locked) {
row_mysql_unlock_data_dictionary(ctx->trx);
}
trx_start_for_ddl(ctx->trx);
dberr_t err= lock_sys_tables(ctx->trx);
row_mysql_lock_data_dictionary(ctx->trx);
if (err != DB_SUCCESS) {
goto err_exit;
}
}
/* n_ref_count must be 1 (+ InnoDB_share),
because background threads cannot
be executing on this very table as we are
holding MDL_EXCLUSIVE. */
ut_ad(ctx->online || ((user_table->get_ref_count() - 1) <= 1));
if (new_clustered) {
online_retry_drop_indexes_low(user_table, ctx->trx);
commit_unlock_and_unlink(ctx->trx);
row_mysql_lock_data_dictionary(ctx->trx);
} else {
row_merge_drop_indexes(ctx->trx, user_table, true);
user_table->indexes.start->online_log = nullptr;
ctx->trx->commit();
}
ut_d(dict_table_check_for_dup_indexes(user_table, CHECK_ALL_COMPLETE));
ut_ad(!user_table->drop_aborted);
err_exit:
/* Clear the to_be_dropped flag in the data dictionary cache. */
for (ulint i = 0; i < ctx->num_to_drop_index; i++) {
DBUG_ASSERT(ctx->drop_index[i]->is_committed());
DBUG_ASSERT(ctx->drop_index[i]->to_be_dropped);
ctx->drop_index[i]->to_be_dropped = 0;
}
if (ctx->trx) {
row_mysql_unlock_data_dictionary(ctx->trx);
ctx->trx->rollback();
ctx->trx->free();
}
trx_commit_for_mysql(ctx->prebuilt->trx);
if (pause_purge) {
purge_sys.resume_FTS();
}
for (uint i = 0; i < ctx->num_to_add_fk; i++) {
if (ctx->add_fk[i]) {
dict_foreign_free(ctx->add_fk[i]);
}
}
delete ctx;
ha_alter_info->handler_ctx = NULL;
DBUG_RETURN(true);
}
/* Check whether an index is needed for the foreign key constraint.
If so, if it is dropped, is there an equivalent index can play its role.
@return true if the index is needed and can't be dropped */
static MY_ATTRIBUTE((nonnull(1,2,3,5), warn_unused_result))
bool
innobase_check_foreign_key_index(
/*=============================*/
Alter_inplace_info* ha_alter_info, /*!< in: Structure describing
changes to be done by ALTER
TABLE */
dict_index_t* index, /*!< in: index to check */
dict_table_t* indexed_table, /*!< in: table that owns the
foreign keys */
const char** col_names, /*!< in: column names, or NULL
for indexed_table->col_names */
trx_t* trx, /*!< in/out: transaction */
dict_foreign_t** drop_fk, /*!< in: Foreign key constraints
to drop */
ulint n_drop_fk) /*!< in: Number of foreign keys
to drop */
{
const dict_foreign_set* fks = &indexed_table->referenced_set;
/* Check for all FK references from other tables to the index. */
for (dict_foreign_set::const_iterator it = fks->begin();
it != fks->end(); ++it) {
dict_foreign_t* foreign = *it;
if (foreign->referenced_index != index) {
continue;
}
ut_ad(indexed_table == foreign->referenced_table);
if (NULL == dict_foreign_find_index(
indexed_table, col_names,
foreign->referenced_col_names,
foreign->n_fields, index,
/*check_charsets=*/TRUE,
/*check_null=*/FALSE,
NULL, NULL, NULL)
&& NULL == innobase_find_equiv_index(
foreign->referenced_col_names,
foreign->n_fields,
ha_alter_info->key_info_buffer,
span<uint>(ha_alter_info->index_add_buffer,
ha_alter_info->index_add_count))) {
/* Index cannot be dropped. */
trx->error_info = index;
return(true);
}
}
fks = &indexed_table->foreign_set;
/* Check for all FK references in current table using the index. */
for (dict_foreign_set::const_iterator it = fks->begin();
it != fks->end(); ++it) {
dict_foreign_t* foreign = *it;
if (foreign->foreign_index != index) {
continue;
}
ut_ad(indexed_table == foreign->foreign_table);
if (!innobase_dropping_foreign(
foreign, drop_fk, n_drop_fk)
&& NULL == dict_foreign_find_index(
indexed_table, col_names,
foreign->foreign_col_names,
foreign->n_fields, index,
/*check_charsets=*/TRUE,
/*check_null=*/FALSE,
NULL, NULL, NULL)
&& NULL == innobase_find_equiv_index(
foreign->foreign_col_names,
foreign->n_fields,
ha_alter_info->key_info_buffer,
span<uint>(ha_alter_info->index_add_buffer,
ha_alter_info->index_add_count))) {
/* Index cannot be dropped. */
trx->error_info = index;
return(true);
}
}
return(false);
}
/**
Rename a given index in the InnoDB data dictionary.
@param index index to rename
@param new_name new name of the index
@param[in,out] trx dict transaction to use, not going to be committed here
@retval true Failure
@retval false Success */
static MY_ATTRIBUTE((warn_unused_result))
bool
rename_index_try(
const dict_index_t* index,
const char* new_name,
trx_t* trx)
{
DBUG_ENTER("rename_index_try");
ut_ad(dict_sys.locked());
ut_ad(trx->dict_operation_lock_mode);
pars_info_t* pinfo;
dberr_t err;
pinfo = pars_info_create();
pars_info_add_ull_literal(pinfo, "table_id", index->table->id);
pars_info_add_ull_literal(pinfo, "index_id", index->id);
pars_info_add_str_literal(pinfo, "new_name", new_name);
trx->op_info = "Renaming an index in SYS_INDEXES";
DBUG_EXECUTE_IF(
"ib_rename_index_fail1",
DBUG_SET("+d,innodb_report_deadlock");
);
err = que_eval_sql(
pinfo,
"PROCEDURE RENAME_INDEX_IN_SYS_INDEXES () IS\n"
"BEGIN\n"
"UPDATE SYS_INDEXES SET\n"
"NAME = :new_name\n"
"WHERE\n"
"ID = :index_id AND\n"
"TABLE_ID = :table_id;\n"
"END;\n", trx); /* pinfo is freed by que_eval_sql() */
DBUG_EXECUTE_IF(
"ib_rename_index_fail1",
DBUG_SET("-d,innodb_report_deadlock");
);
trx->op_info = "";
if (err != DB_SUCCESS) {
my_error_innodb(err, index->table->name.m_name, 0);
DBUG_RETURN(true);
}
DBUG_RETURN(false);
}
/**
Rename a given index in the InnoDB data dictionary cache.
@param[in,out] index index to rename
@param new_name new index name
*/
static
void
innobase_rename_index_cache(dict_index_t* index, const char* new_name)
{
DBUG_ENTER("innobase_rename_index_cache");
ut_ad(dict_sys.locked());
size_t old_name_len = strlen(index->name);
size_t new_name_len = strlen(new_name);
if (old_name_len < new_name_len) {
index->name = static_cast<char*>(
mem_heap_alloc(index->heap, new_name_len + 1));
}
memcpy(const_cast<char*>(index->name()), new_name, new_name_len + 1);
DBUG_VOID_RETURN;
}
/** Rename the index name in cache.
@param[in] ctx alter context
@param[in] ha_alter_info Data used during inplace alter. */
static void
innobase_rename_indexes_cache(const ha_innobase_inplace_ctx *ctx,
const Alter_inplace_info *ha_alter_info)
{
DBUG_ASSERT(ha_alter_info->handler_flags & ALTER_RENAME_INDEX);
std::vector<std::pair<dict_index_t *, const char *>> rename_info;
rename_info.reserve(ha_alter_info->rename_keys.size());
for (const Alter_inplace_info::Rename_key_pair &pair :
ha_alter_info->rename_keys)
{
dict_index_t *index=
dict_table_get_index_on_name(ctx->old_table, pair.old_key->name.str);
ut_ad(index);
rename_info.emplace_back(index, pair.new_key->name.str);
}
for (const auto &pair : rename_info)
innobase_rename_index_cache(pair.first, pair.second);
}
/** Fill the stored column information in s_cols list.
@param[in] altered_table mysql table object
@param[in] table innodb table object
@param[out] s_cols list of stored column
@param[out] s_heap heap for storing stored
column information. */
static
void
alter_fill_stored_column(
const TABLE* altered_table,
dict_table_t* table,
dict_s_col_list** s_cols,
mem_heap_t** s_heap)
{
ulint n_cols = altered_table->s->fields;
ulint stored_col_no = 0;
for (ulint i = 0; i < n_cols; i++) {
Field* field = altered_table->field[i];
dict_s_col_t s_col;
if (field->stored_in_db()) {
stored_col_no++;
}
if (!innobase_is_s_fld(field)) {
continue;
}
ulint num_base = 0;
dict_col_t* col = dict_table_get_nth_col(table,
stored_col_no);
s_col.m_col = col;
s_col.s_pos = i;
if (*s_cols == NULL) {
*s_cols = UT_NEW_NOKEY(dict_s_col_list());
*s_heap = mem_heap_create(1000);
}
if (num_base != 0) {
s_col.base_col = static_cast<dict_col_t**>(mem_heap_zalloc(
*s_heap, num_base * sizeof(dict_col_t*)));
} else {
s_col.base_col = NULL;
}
s_col.num_base = num_base;
innodb_base_col_setup_for_stored(table, field, &s_col);
(*s_cols)->push_front(s_col);
}
}
static bool alter_templ_needs_rebuild(const TABLE* altered_table,
const Alter_inplace_info* ha_alter_info,
const dict_table_t* table);
/** Check whether the column is present in table foreign key
relations.
@param table table which has foreign key relation
@param col column to be checked
@param col_name column name to be display during error
@param drop_fk Drop foreign key constraint
@param n_drop_fk number of drop foreign keys
@param add_fk Newly added foreign key constraint
@param n_add_fk number of newly added foreign constraint */
static
bool check_col_is_in_fk_indexes(
const dict_table_t *table, const dict_col_t *col,
const char* col_name,
span<const dict_foreign_t *> drop_fk,
span<const dict_foreign_t *> add_fk)
{
char *fk_id= nullptr;
for (const auto &f : table->foreign_set)
{
if (!f->foreign_index ||
std::find(drop_fk.begin(), drop_fk.end(), f) != drop_fk.end())
continue;
for (ulint i= 0; i < f->n_fields; i++)
if (f->foreign_index->fields[i].col == col)
{
fk_id= f->id;
goto err_exit;
}
}
for (const auto &a : add_fk)
{
if (!a->foreign_index) continue;
for (ulint i= 0; i < a->n_fields; i++)
{
if (a->foreign_index->fields[i].col == col)
{
fk_id= a->id;
goto err_exit;
}
}
}
for (const auto &f : table->referenced_set)
{
if (!f->referenced_index) continue;
for (ulint i= 0; i < f->n_fields; i++)
{
if (f->referenced_index->fields[i].col == col)
{
my_error(ER_FK_COLUMN_CANNOT_CHANGE_CHILD, MYF(0),
col_name, f->id, f->foreign_table_name);
return true;
}
}
}
return false;
err_exit:
my_error(ER_FK_COLUMN_CANNOT_CHANGE, MYF(0), col_name,
fk_id ? fk_id :
(std::string(table->name.m_name) + "_ibfk_0").c_str());
return true;
}
/** Allows InnoDB to update internal structures with concurrent
writes blocked (provided that check_if_supported_inplace_alter()
did not return HA_ALTER_INPLACE_NO_LOCK).
This will be invoked before inplace_alter_table().
@param altered_table TABLE object for new version of table.
@param ha_alter_info Structure describing changes to be done
by ALTER TABLE and holding data used during in-place alter.
@retval true Failure
@retval false Success
*/
bool
ha_innobase::prepare_inplace_alter_table(
/*=====================================*/
TABLE* altered_table,
Alter_inplace_info* ha_alter_info)
{
dict_index_t** drop_index; /*!< Index to be dropped */
ulint n_drop_index; /*!< Number of indexes to drop */
dict_foreign_t**drop_fk; /*!< Foreign key constraints to drop */
ulint n_drop_fk; /*!< Number of foreign keys to drop */
dict_foreign_t**add_fk = NULL; /*!< Foreign key constraints to drop */
ulint n_add_fk= 0; /*!< Number of foreign keys to drop */
dict_table_t* indexed_table; /*!< Table where indexes are created */
mem_heap_t* heap;
const char** col_names;
int error;
ulint add_autoinc_col_no = ULINT_UNDEFINED;
ulonglong autoinc_col_max_value = 0;
ulint fts_doc_col_no = ULINT_UNDEFINED;
bool add_fts_doc_id = false;
bool add_fts_doc_id_idx = false;
bool add_fts_idx = false;
dict_s_col_list*s_cols = NULL;
mem_heap_t* s_heap = NULL;
DBUG_ENTER("prepare_inplace_alter_table");
DBUG_ASSERT(!ha_alter_info->handler_ctx);
DBUG_ASSERT(ha_alter_info->create_info);
DBUG_ASSERT(!srv_read_only_mode);
/* Init online ddl status variables */
onlineddl_rowlog_rows = 0;
onlineddl_rowlog_pct_used = 0;
onlineddl_pct_progress = 0;
MONITOR_ATOMIC_INC(MONITOR_PENDING_ALTER_TABLE);
#ifdef UNIV_DEBUG
for (dict_index_t* index = dict_table_get_first_index(m_prebuilt->table);
index;
index = dict_table_get_next_index(index)) {
ut_ad(!index->to_be_dropped);
}
#endif /* UNIV_DEBUG */
ut_d(dict_sys.freeze(SRW_LOCK_CALL));
ut_d(dict_table_check_for_dup_indexes(
m_prebuilt->table, CHECK_ABORTED_OK));
ut_d(dict_sys.unfreeze());
if (!(ha_alter_info->handler_flags & ~INNOBASE_INPLACE_IGNORE)) {
/* Nothing to do */
DBUG_ASSERT(!m_prebuilt->trx->dict_operation_lock_mode);
m_prebuilt->trx_id = 0;
DBUG_RETURN(false);
}
#ifdef WITH_PARTITION_STORAGE_ENGINE
if (table->part_info == NULL) {
#endif
/* Ignore the MDL downgrade when table is empty.
This optimization is disabled for partition table. */
ha_alter_info->mdl_exclusive_after_prepare =
innobase_table_is_empty(m_prebuilt->table, false);
if (ha_alter_info->online
&& ha_alter_info->mdl_exclusive_after_prepare) {
ha_alter_info->online = false;
}
#ifdef WITH_PARTITION_STORAGE_ENGINE
}
#endif
indexed_table = m_prebuilt->table;
/* ALTER TABLE will not implicitly move a table from a single-table
tablespace to the system tablespace when innodb_file_per_table=OFF.
But it will implicitly move a table from the system tablespace to a
single-table tablespace if innodb_file_per_table = ON. */
create_table_info_t info(m_user_thd,
altered_table,
ha_alter_info->create_info,
NULL,
NULL,
srv_file_per_table);
info.set_tablespace_type(indexed_table->space != fil_system.sys_space);
if (ha_alter_info->handler_flags & ALTER_ADD_NON_UNIQUE_NON_PRIM_INDEX) {
if (info.gcols_in_fulltext_or_spatial()) {
goto err_exit_no_heap;
}
}
if (indexed_table->is_readable()) {
} else {
if (indexed_table->corrupted) {
/* Handled below */
} else {
if (const fil_space_t* space = indexed_table->space) {
String str;
const char* engine= table_type();
push_warning_printf(
m_user_thd,
Sql_condition::WARN_LEVEL_WARN,
HA_ERR_DECRYPTION_FAILED,
"Table %s in file %s is encrypted but encryption service or"
" used key_id is not available. "
" Can't continue reading table.",
table_share->table_name.str,
space->chain.start->name);
my_error(ER_GET_ERRMSG, MYF(0), HA_ERR_DECRYPTION_FAILED, str.c_ptr(), engine);
DBUG_RETURN(true);
}
}
}
if (indexed_table->corrupted
|| dict_table_get_first_index(indexed_table) == NULL
|| dict_table_get_first_index(indexed_table)->is_corrupted()) {
/* The clustered index is corrupted. */
my_error(ER_CHECK_NO_SUCH_TABLE, MYF(0));
DBUG_RETURN(true);
} else {
const char* invalid_opt = info.create_options_are_invalid();
/* Check engine specific table options */
if (const char* invalid_tbopt = info.check_table_options()) {
my_error(ER_ILLEGAL_HA_CREATE_OPTION, MYF(0),
table_type(), invalid_tbopt);
goto err_exit_no_heap;
}
if (invalid_opt) {
my_error(ER_ILLEGAL_HA_CREATE_OPTION, MYF(0),
table_type(), invalid_opt);
goto err_exit_no_heap;
}
}
/* Check if any index name is reserved. */
if (innobase_index_name_is_reserved(
m_user_thd,
ha_alter_info->key_info_buffer,
ha_alter_info->key_count)) {
err_exit_no_heap:
DBUG_ASSERT(!m_prebuilt->trx->dict_operation_lock_mode);
online_retry_drop_indexes(m_prebuilt->table, m_user_thd);
DBUG_RETURN(true);
}
indexed_table = m_prebuilt->table;
/* Check that index keys are sensible */
error = innobase_check_index_keys(ha_alter_info, indexed_table);
if (error) {
goto err_exit_no_heap;
}
/* Prohibit renaming a column to something that the table
already contains. */
if (ha_alter_info->handler_flags
& ALTER_COLUMN_NAME) {
for (Field** fp = table->field; *fp; fp++) {
if (!((*fp)->flags & FIELD_IS_RENAMED)) {
continue;
}
const char* name = 0;
for (const Create_field& cf :
ha_alter_info->alter_info->create_list) {
if (cf.field == *fp) {
name = cf.field_name.str;
goto check_if_ok_to_rename;
}
}
ut_error;
check_if_ok_to_rename:
/* Prohibit renaming a column from FTS_DOC_ID
if full-text indexes exist. */
if (!my_strcasecmp(system_charset_info,
(*fp)->field_name.str,
FTS_DOC_ID_COL_NAME)
&& innobase_fulltext_exist(altered_table)) {
my_error(ER_INNODB_FT_WRONG_DOCID_COLUMN,
MYF(0), name);
goto err_exit_no_heap;
}
/* Prohibit renaming a column to an internal column. */
const char* s = m_prebuilt->table->col_names;
unsigned j;
/* Skip user columns.
MySQL should have checked these already.
We want to allow renaming of c1 to c2, c2 to c1. */
for (j = 0; j < table->s->fields; j++) {
if (table->field[j]->stored_in_db()) {
s += strlen(s) + 1;
}
}
for (; j < m_prebuilt->table->n_def; j++) {
if (!my_strcasecmp(
system_charset_info, name, s)) {
my_error(ER_WRONG_COLUMN_NAME, MYF(0),
s);
goto err_exit_no_heap;
}
s += strlen(s) + 1;
}
}
}
if (!info.innobase_table_flags()) {
my_error(ER_ILLEGAL_HA_CREATE_OPTION, MYF(0),
table_type(), "PAGE_COMPRESSED");
goto err_exit_no_heap;
}
if (info.flags2() & DICT_TF2_USE_FILE_PER_TABLE) {
/* Preserve the DATA DIRECTORY attribute, because it
currently cannot be changed during ALTER TABLE. */
info.flags_set(m_prebuilt->table->flags
& 1U << DICT_TF_POS_DATA_DIR);
}
/* ALGORITHM=INPLACE without rebuild (10.3+ ALGORITHM=NOCOPY)
must use the current ROW_FORMAT of the table. */
const ulint max_col_len = DICT_MAX_FIELD_LEN_BY_FORMAT_FLAG(
innobase_need_rebuild(ha_alter_info, this->table)
? info.flags()
: m_prebuilt->table->flags);
/* Check each index's column length to make sure they do not
exceed limit */
for (ulint i = 0; i < ha_alter_info->key_count; i++) {
const KEY* key = &ha_alter_info->key_info_buffer[i];
if (key->flags & HA_FULLTEXT) {
/* The column length does not matter for
fulltext search indexes. But, UNIQUE
fulltext indexes are not supported. */
DBUG_ASSERT(!(key->flags & HA_NOSAME));
DBUG_ASSERT(!(key->flags & HA_KEYFLAG_MASK
& ~(HA_FULLTEXT
| HA_PACK_KEY
| HA_BINARY_PACK_KEY)));
add_fts_idx = true;
continue;
}
if (too_big_key_part_length(max_col_len, *key)) {
my_error(ER_INDEX_COLUMN_TOO_LONG, MYF(0),
max_col_len);
goto err_exit_no_heap;
}
}
/* We won't be allowed to add fts index to a table with
fts indexes already but without AUX_HEX_NAME set.
This means the aux tables of the table failed to
rename to hex format but new created aux tables
shall be in hex format, which is contradictory. */
if (!DICT_TF2_FLAG_IS_SET(indexed_table, DICT_TF2_FTS_AUX_HEX_NAME)
&& indexed_table->fts != NULL && add_fts_idx) {
my_error(ER_INNODB_FT_AUX_NOT_HEX_ID, MYF(0));
goto err_exit_no_heap;
}
/* Check existing index definitions for too-long column
prefixes as well, in case max_col_len shrunk. */
for (const dict_index_t* index
= dict_table_get_first_index(indexed_table);
index;
index = dict_table_get_next_index(index)) {
if (index->type & DICT_FTS) {
DBUG_ASSERT(index->type == DICT_FTS
|| (index->type & DICT_CORRUPT));
/* We need to drop any corrupted fts indexes
before we add a new fts index. */
if (add_fts_idx && index->type & DICT_CORRUPT) {
ib_errf(m_user_thd, IB_LOG_LEVEL_ERROR,
ER_INNODB_INDEX_CORRUPT,
"Fulltext index '%s' is corrupt. "
"you should drop this index first.",
index->name());
goto err_exit_no_heap;
}
continue;
}
for (ulint i = 0; i < dict_index_get_n_fields(index); i++) {
const dict_field_t* field
= dict_index_get_nth_field(index, i);
if (field->prefix_len > max_col_len) {
my_error(ER_INDEX_COLUMN_TOO_LONG, MYF(0),
max_col_len);
goto err_exit_no_heap;
}
}
}
n_drop_index = 0;
n_drop_fk = 0;
if (ha_alter_info->handler_flags
& (INNOBASE_ALTER_NOREBUILD | INNOBASE_ALTER_REBUILD
| INNOBASE_ALTER_INSTANT)) {
heap = mem_heap_create(1024);
if (ha_alter_info->handler_flags
& ALTER_COLUMN_NAME) {
col_names = innobase_get_col_names(
ha_alter_info, altered_table, table,
indexed_table, heap);
} else {
col_names = NULL;
}
} else {
heap = NULL;
col_names = NULL;
}
if (ha_alter_info->handler_flags
& ALTER_DROP_FOREIGN_KEY) {
DBUG_ASSERT(ha_alter_info->alter_info->drop_list.elements > 0);
drop_fk = static_cast<dict_foreign_t**>(
mem_heap_alloc(
heap,
ha_alter_info->alter_info->drop_list.elements
* sizeof(dict_foreign_t*)));
for (Alter_drop& drop : ha_alter_info->alter_info->drop_list) {
if (drop.type != Alter_drop::FOREIGN_KEY) {
continue;
}
dict_foreign_t* foreign;
for (dict_foreign_set::iterator it
= m_prebuilt->table->foreign_set.begin();
it != m_prebuilt->table->foreign_set.end();
++it) {
foreign = *it;
const char* fid = strchr(foreign->id, '/');
DBUG_ASSERT(fid);
/* If no database/ prefix was present in
the FOREIGN KEY constraint name, compare
to the full constraint name. */
fid = fid ? fid + 1 : foreign->id;
if (!my_strcasecmp(system_charset_info,
fid, drop.name)) {
goto found_fk;
}
}
my_error(ER_CANT_DROP_FIELD_OR_KEY, MYF(0),
drop.type_name(), drop.name);
goto err_exit;
found_fk:
for (ulint i = n_drop_fk; i--; ) {
if (drop_fk[i] == foreign) {
goto dup_fk;
}
}
drop_fk[n_drop_fk++] = foreign;
dup_fk:
continue;
}
DBUG_ASSERT(n_drop_fk > 0);
DBUG_ASSERT(n_drop_fk
<= ha_alter_info->alter_info->drop_list.elements);
} else {
drop_fk = NULL;
}
if (ha_alter_info->index_drop_count) {
dict_index_t* drop_primary = NULL;
DBUG_ASSERT(ha_alter_info->handler_flags
& (ALTER_DROP_NON_UNIQUE_NON_PRIM_INDEX
| ALTER_DROP_UNIQUE_INDEX
| ALTER_DROP_PK_INDEX));
/* Check which indexes to drop. */
drop_index = static_cast<dict_index_t**>(
mem_heap_alloc(
heap, (ha_alter_info->index_drop_count + 1)
* sizeof *drop_index));
for (uint i = 0; i < ha_alter_info->index_drop_count; i++) {
const KEY* key
= ha_alter_info->index_drop_buffer[i];
dict_index_t* index
= dict_table_get_index_on_name(
indexed_table, key->name.str);
if (!index) {
push_warning_printf(
m_user_thd,
Sql_condition::WARN_LEVEL_WARN,
HA_ERR_WRONG_INDEX,
"InnoDB could not find key"
" with name %s", key->name.str);
} else {
ut_ad(!index->to_be_dropped);
if (!index->is_primary()) {
drop_index[n_drop_index++] = index;
} else {
drop_primary = index;
}
}
}
/* If all FULLTEXT indexes were removed, drop an
internal FTS_DOC_ID_INDEX as well, unless it exists in
the table. */
if (innobase_fulltext_exist(table)
&& !innobase_fulltext_exist(altered_table)
&& !DICT_TF2_FLAG_IS_SET(
indexed_table, DICT_TF2_FTS_HAS_DOC_ID)) {
dict_index_t* fts_doc_index
= indexed_table->fts_doc_id_index;
ut_ad(fts_doc_index);
// Add some fault tolerance for non-debug builds.
if (fts_doc_index == NULL) {
goto check_if_can_drop_indexes;
}
DBUG_ASSERT(!fts_doc_index->to_be_dropped);
for (uint i = 0; i < table->s->keys; i++) {
if (!my_strcasecmp(
system_charset_info,
FTS_DOC_ID_INDEX_NAME,
table->key_info[i].name.str)) {
/* The index exists in the MySQL
data dictionary. Do not drop it,
even though it is no longer needed
by InnoDB fulltext search. */
goto check_if_can_drop_indexes;
}
}
drop_index[n_drop_index++] = fts_doc_index;
}
check_if_can_drop_indexes:
/* Check if the indexes can be dropped. */
/* Prevent a race condition between DROP INDEX and
CREATE TABLE adding FOREIGN KEY constraints. */
row_mysql_lock_data_dictionary(m_prebuilt->trx);
if (!n_drop_index) {
drop_index = NULL;
} else {
/* Flag all indexes that are to be dropped. */
for (ulint i = 0; i < n_drop_index; i++) {
ut_ad(!drop_index[i]->to_be_dropped);
drop_index[i]->to_be_dropped = 1;
}
}
if (m_prebuilt->trx->check_foreigns) {
for (uint i = 0; i < n_drop_index; i++) {
dict_index_t* index = drop_index[i];
if (innobase_check_foreign_key_index(
ha_alter_info, index,
indexed_table, col_names,
m_prebuilt->trx, drop_fk, n_drop_fk)) {
row_mysql_unlock_data_dictionary(
m_prebuilt->trx);
m_prebuilt->trx->error_info = index;
print_error(HA_ERR_DROP_INDEX_FK,
MYF(0));
goto err_exit;
}
}
/* If a primary index is dropped, need to check
any depending foreign constraints get affected */
if (drop_primary
&& innobase_check_foreign_key_index(
ha_alter_info, drop_primary,
indexed_table, col_names,
m_prebuilt->trx, drop_fk, n_drop_fk)) {
row_mysql_unlock_data_dictionary(m_prebuilt->trx);
print_error(HA_ERR_DROP_INDEX_FK, MYF(0));
goto err_exit;
}
}
row_mysql_unlock_data_dictionary(m_prebuilt->trx);
} else {
drop_index = NULL;
}
/* Check if any of the existing indexes are marked as corruption
and if they are, refuse adding more indexes. */
if (ha_alter_info->handler_flags & ALTER_ADD_NON_UNIQUE_NON_PRIM_INDEX) {
for (dict_index_t* index = dict_table_get_first_index(indexed_table);
index != NULL; index = dict_table_get_next_index(index)) {
if (!index->to_be_dropped && index->is_committed()
&& index->is_corrupted()) {
my_error(ER_INDEX_CORRUPT, MYF(0), index->name());
goto err_exit;
}
}
}
if (ha_alter_info->handler_flags
& ALTER_ADD_FOREIGN_KEY) {
ut_ad(!m_prebuilt->trx->check_foreigns);
alter_fill_stored_column(altered_table, m_prebuilt->table,
&s_cols, &s_heap);
add_fk = static_cast<dict_foreign_t**>(
mem_heap_zalloc(
heap,
ha_alter_info->alter_info->key_list.elements
* sizeof(dict_foreign_t*)));
if (!innobase_get_foreign_key_info(
ha_alter_info, table_share,
m_prebuilt->table, col_names,
drop_index, n_drop_index,
add_fk, &n_add_fk, m_prebuilt->trx, s_cols)) {
err_exit:
if (n_drop_index) {
row_mysql_lock_data_dictionary(m_prebuilt->trx);
/* Clear the to_be_dropped flags, which might
have been set at this point. */
for (ulint i = 0; i < n_drop_index; i++) {
ut_ad(drop_index[i]->is_committed());
drop_index[i]->to_be_dropped = 0;
}
row_mysql_unlock_data_dictionary(
m_prebuilt->trx);
}
for (uint i = 0; i < n_add_fk; i++) {
if (add_fk[i]) {
dict_foreign_free(add_fk[i]);
}
}
if (heap) {
mem_heap_free(heap);
}
if (s_cols != NULL) {
UT_DELETE(s_cols);
mem_heap_free(s_heap);
}
goto err_exit_no_heap;
}
if (s_cols != NULL) {
UT_DELETE(s_cols);
mem_heap_free(s_heap);
}
}
/** Alter shouldn't support if the foreign and referenced
index columns are modified */
if (ha_alter_info->handler_flags
& ALTER_COLUMN_TYPE_CHANGE_BY_ENGINE) {
for (uint i= 0, n_v_col= 0; i < table->s->fields;
i++) {
Field* field = table->field[i];
/* Altering the virtual column is not
supported for inplace alter algorithm */
if (field->vcol_info) {
n_v_col++;
continue;
}
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
if (new_field.field == field) {
if (!field->is_equal(new_field)) {
goto field_changed;
}
break;
}
}
continue;
field_changed:
const char* col_name= field->field_name.str;
dict_col_t *col= dict_table_get_nth_col(
m_prebuilt->table, i - n_v_col);
if (check_col_is_in_fk_indexes(
m_prebuilt->table, col, col_name,
span<const dict_foreign_t*>(
const_cast<const dict_foreign_t**>(
drop_fk), n_drop_fk),
span<const dict_foreign_t*>(
const_cast<const dict_foreign_t**>(
add_fk), n_add_fk)))
goto err_exit;
}
}
if (ha_alter_info->handler_flags & ALTER_RENAME_INDEX) {
for (const Alter_inplace_info::Rename_key_pair& pair :
ha_alter_info->rename_keys) {
dict_index_t* index = dict_table_get_index_on_name(
indexed_table, pair.old_key->name.str);
if (!index || index->is_corrupted()) {
my_error(ER_INDEX_CORRUPT, MYF(0),
index->name());
goto err_exit;
}
}
}
const ha_table_option_struct& alt_opt=
*ha_alter_info->create_info->option_struct;
ha_innobase_inplace_ctx *ctx = NULL;
if (!(ha_alter_info->handler_flags & INNOBASE_ALTER_DATA)
|| ((ha_alter_info->handler_flags & ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_NOCREATE
| INNOBASE_ALTER_INSTANT))
== ALTER_OPTIONS
&& !alter_options_need_rebuild(ha_alter_info, table))) {
DBUG_ASSERT(!m_prebuilt->trx->dict_operation_lock_mode);
online_retry_drop_indexes(m_prebuilt->table, m_user_thd);
if (heap) {
ctx = new ha_innobase_inplace_ctx(
m_prebuilt,
drop_index, n_drop_index,
drop_fk, n_drop_fk,
add_fk, n_add_fk,
ha_alter_info->online,
heap, indexed_table,
col_names, ULINT_UNDEFINED, 0, 0,
(ha_alter_info->ignore
|| !thd_is_strict_mode(m_user_thd)),
alt_opt.page_compressed,
alt_opt.page_compression_level);
ha_alter_info->handler_ctx = ctx;
}
if ((ha_alter_info->handler_flags
& ALTER_DROP_VIRTUAL_COLUMN)
&& prepare_inplace_drop_virtual(ha_alter_info, table)) {
DBUG_RETURN(true);
}
if ((ha_alter_info->handler_flags
& ALTER_ADD_VIRTUAL_COLUMN)
&& prepare_inplace_add_virtual(
ha_alter_info, altered_table, table)) {
DBUG_RETURN(true);
}
if ((ha_alter_info->handler_flags & ALTER_OPTIONS)
&& ctx->page_compression_level
&& !ctx->old_table->not_redundant()) {
my_error(ER_ILLEGAL_HA_CREATE_OPTION, MYF(0),
table_type(),
"PAGE_COMPRESSED=1 ROW_FORMAT=REDUNDANT");
DBUG_RETURN(true);
}
if (!(ha_alter_info->handler_flags & INNOBASE_ALTER_DATA)
&& alter_templ_needs_rebuild(altered_table, ha_alter_info,
ctx->new_table)
&& ctx->new_table->n_v_cols > 0) {
/* Changing maria record structure may end up here only
if virtual columns were altered. In this case, however,
vc_templ should be rebuilt. Since we don't actually
change any stored data, we can just dispose vc_templ;
it will be recreated on next ha_innobase::open(). */
DBUG_ASSERT(ctx->new_table == ctx->old_table);
dict_free_vc_templ(ctx->new_table->vc_templ);
UT_DELETE(ctx->new_table->vc_templ);
ctx->new_table->vc_templ = NULL;
}
success:
/* Memorize the future transaction ID for committing
the data dictionary change, to be reported by
ha_innobase::table_version(). */
m_prebuilt->trx_id = (ha_alter_info->handler_flags
& ~INNOBASE_INPLACE_IGNORE)
? static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx)->trx->id
: 0;
DBUG_RETURN(false);
}
/* If we are to build a full-text search index, check whether
the table already has a DOC ID column. If not, we will need to
add a Doc ID hidden column and rebuild the primary index */
if (innobase_fulltext_exist(altered_table)) {
ulint doc_col_no;
ulint num_v = 0;
if (!innobase_fts_check_doc_id_col(
m_prebuilt->table,
altered_table, &fts_doc_col_no, &num_v)) {
fts_doc_col_no = altered_table->s->fields - num_v;
add_fts_doc_id = true;
add_fts_doc_id_idx = true;
} else if (fts_doc_col_no == ULINT_UNDEFINED) {
goto err_exit;
}
switch (innobase_fts_check_doc_id_index(
m_prebuilt->table, altered_table,
&doc_col_no)) {
case FTS_NOT_EXIST_DOC_ID_INDEX:
add_fts_doc_id_idx = true;
break;
case FTS_INCORRECT_DOC_ID_INDEX:
my_error(ER_INNODB_FT_WRONG_DOCID_INDEX, MYF(0),
FTS_DOC_ID_INDEX_NAME);
goto err_exit;
case FTS_EXIST_DOC_ID_INDEX:
DBUG_ASSERT(
doc_col_no == fts_doc_col_no
|| doc_col_no == ULINT_UNDEFINED
|| (ha_alter_info->handler_flags
& (ALTER_STORED_COLUMN_ORDER
| ALTER_DROP_STORED_COLUMN
| ALTER_ADD_STORED_BASE_COLUMN)));
}
}
/* See if an AUTO_INCREMENT column was added. */
uint i = 0;
ulint num_v = 0;
for (const Create_field& new_field :
ha_alter_info->alter_info->create_list) {
const Field* field;
DBUG_ASSERT(i < altered_table->s->fields);
for (uint old_i = 0; table->field[old_i]; old_i++) {
if (new_field.field == table->field[old_i]) {
goto found_col;
}
}
/* This is an added column. */
DBUG_ASSERT(!new_field.field);
DBUG_ASSERT(ha_alter_info->handler_flags
& ALTER_ADD_COLUMN);
field = altered_table->field[i];
DBUG_ASSERT((field->unireg_check
== Field::NEXT_NUMBER)
== !!(field->flags & AUTO_INCREMENT_FLAG));
if (field->flags & AUTO_INCREMENT_FLAG) {
if (add_autoinc_col_no != ULINT_UNDEFINED) {
/* This should have been blocked earlier. */
ut_ad(0);
my_error(ER_WRONG_AUTO_KEY, MYF(0));
goto err_exit;
}
/* Get the col no of the old table non-virtual column array */
add_autoinc_col_no = i - num_v;
autoinc_col_max_value = innobase_get_int_col_max_value(field);
}
found_col:
num_v += !new_field.stored_in_db();
i++;
}
DBUG_ASSERT(heap);
DBUG_ASSERT(m_user_thd == m_prebuilt->trx->mysql_thd);
DBUG_ASSERT(!ha_alter_info->handler_ctx);
ha_alter_info->handler_ctx = new ha_innobase_inplace_ctx(
m_prebuilt,
drop_index, n_drop_index,
drop_fk, n_drop_fk, add_fk, n_add_fk,
ha_alter_info->online,
heap, m_prebuilt->table, col_names,
add_autoinc_col_no,
ha_alter_info->create_info->auto_increment_value,
autoinc_col_max_value,
ha_alter_info->ignore || !thd_is_strict_mode(m_user_thd),
alt_opt.page_compressed, alt_opt.page_compression_level);
if (!prepare_inplace_alter_table_dict(
ha_alter_info, altered_table, table,
table_share->table_name.str,
info.flags(), info.flags2(),
fts_doc_col_no, add_fts_doc_id,
add_fts_doc_id_idx)) {
goto success;
}
DBUG_RETURN(true);
}
/* Check whether a columnn length change alter operation requires
to rebuild the template.
@param[in] altered_table TABLE object for new version of table.
@param[in] ha_alter_info Structure describing changes to be done
by ALTER TABLE and holding data used
during in-place alter.
@param[in] table table being altered
@return TRUE if needs rebuild. */
static
bool
alter_templ_needs_rebuild(
const TABLE* altered_table,
const Alter_inplace_info* ha_alter_info,
const dict_table_t* table)
{
ulint i = 0;
for (Field** fp = altered_table->field; *fp; fp++, i++) {
for (const Create_field& cf :
ha_alter_info->alter_info->create_list) {
for (ulint j=0; j < table->n_cols; j++) {
dict_col_t* cols
= dict_table_get_nth_col(table, j);
if (cf.length > cols->len) {
return(true);
}
}
}
}
return(false);
}
/** Alter the table structure in-place with operations
specified using Alter_inplace_info.
The level of concurrency allowed during this operation depends
on the return value from check_if_supported_inplace_alter().
@param altered_table TABLE object for new version of table.
@param ha_alter_info Structure describing changes to be done
by ALTER TABLE and holding data used during in-place alter.
@retval true Failure
@retval false Success
*/
bool
ha_innobase::inplace_alter_table(
/*=============================*/
TABLE* altered_table,
Alter_inplace_info* ha_alter_info)
{
dberr_t error;
dict_add_v_col_t* add_v = NULL;
dict_vcol_templ_t* s_templ = NULL;
dict_vcol_templ_t* old_templ = NULL;
struct TABLE* eval_table = altered_table;
bool rebuild_templ = false;
DBUG_ENTER("inplace_alter_table");
DBUG_ASSERT(!srv_read_only_mode);
DEBUG_SYNC(m_user_thd, "innodb_inplace_alter_table_enter");
/* Ignore the inplace alter phase when table is empty */
if (!(ha_alter_info->handler_flags & INNOBASE_ALTER_DATA)
|| ha_alter_info->mdl_exclusive_after_prepare) {
ok_exit:
DEBUG_SYNC(m_user_thd, "innodb_after_inplace_alter_table");
DBUG_RETURN(false);
}
if ((ha_alter_info->handler_flags & ~(INNOBASE_INPLACE_IGNORE
| INNOBASE_ALTER_NOCREATE
| INNOBASE_ALTER_INSTANT))
== ALTER_OPTIONS
&& !alter_options_need_rebuild(ha_alter_info, table)) {
goto ok_exit;
}
ha_innobase_inplace_ctx* ctx
= static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx);
DBUG_ASSERT(ctx);
DBUG_ASSERT(ctx->trx);
DBUG_ASSERT(ctx->prebuilt == m_prebuilt);
if (ctx->is_instant()) goto ok_exit;
dict_index_t* pk = dict_table_get_first_index(m_prebuilt->table);
ut_ad(pk != NULL);
/* For partitioned tables this could be already allocated from a
previous partition invocation. For normal tables this is NULL. */
UT_DELETE(ctx->m_stage);
ctx->m_stage = UT_NEW_NOKEY(ut_stage_alter_t(pk));
if (!m_prebuilt->table->is_readable()) {
goto all_done;
}
/* If we are doing a table rebuilding or having added virtual
columns in the same clause, we will need to build a table template
that carries translation information between MySQL TABLE and InnoDB
table, which indicates the virtual columns and their base columns
info. This is used to do the computation callback, so that the
data in base columns can be extracted send to server.
If the Column length changes and it is a part of virtual
index then we need to rebuild the template. */
rebuild_templ
= ctx->need_rebuild()
|| ((ha_alter_info->handler_flags
& ALTER_COLUMN_TYPE_CHANGE_BY_ENGINE)
&& alter_templ_needs_rebuild(
altered_table, ha_alter_info, ctx->new_table));
if ((ctx->new_table->n_v_cols > 0) && rebuild_templ) {
/* Save the templ if isn't NULL so as to restore the
original state in case of alter operation failures. */
if (ctx->new_table->vc_templ != NULL && !ctx->need_rebuild()) {
old_templ = ctx->new_table->vc_templ;
}
s_templ = UT_NEW_NOKEY(dict_vcol_templ_t());
ctx->new_table->lock_mutex_lock();
innobase_build_v_templ(
altered_table, ctx->new_table, s_templ);
ctx->new_table->vc_templ = s_templ;
ctx->new_table->lock_mutex_unlock();
} else if (ctx->num_to_add_vcol > 0 && ctx->num_to_drop_vcol == 0) {
/* if there is ongoing drop virtual column, then we disallow
inplace add index on newly added virtual column, so it does
not need to come in here to rebuild template with add_v.
Please also see the assertion in innodb_v_adjust_idx_col() */
s_templ = UT_NEW_NOKEY(dict_vcol_templ_t());
add_v = static_cast<dict_add_v_col_t*>(
mem_heap_alloc(ctx->heap, sizeof *add_v));
add_v->n_v_col = ctx->num_to_add_vcol;
add_v->v_col = ctx->add_vcol;
add_v->v_col_name = ctx->add_vcol_name;
ctx->new_table->lock_mutex_lock();
innobase_build_v_templ(
altered_table, ctx->new_table, s_templ, add_v);
old_templ = ctx->new_table->vc_templ;
ctx->new_table->vc_templ = s_templ;
ctx->new_table->lock_mutex_unlock();
}
/* Drop virtual column without rebuild will keep dict table
unchanged, we use old table to evaluate virtual column value
in innobase_get_computed_value(). */
if (!ctx->need_rebuild() && ctx->num_to_drop_vcol > 0) {
eval_table = table;
}
/* Read the clustered index of the table and build
indexes based on this information using temporary
files and merge sort. */
DBUG_EXECUTE_IF("innodb_OOM_inplace_alter",
error = DB_OUT_OF_MEMORY; goto oom;);
error = row_merge_build_indexes(
m_prebuilt->trx,
m_prebuilt->table, ctx->new_table,
ctx->online,
ctx->add_index, ctx->add_key_numbers, ctx->num_to_add_index,
altered_table, ctx->defaults, ctx->col_map,
ctx->add_autoinc, ctx->sequence, ctx->skip_pk_sort,
ctx->m_stage, add_v, eval_table, ctx->allow_not_null,
ctx->change_col_collate.empty()
? nullptr : &ctx->change_col_collate);
#ifndef DBUG_OFF
oom:
#endif /* !DBUG_OFF */
if (error == DB_SUCCESS && ctx->online && ctx->need_rebuild()) {
DEBUG_SYNC_C("row_log_table_apply1_before");
error = row_log_table_apply(
ctx->thr, m_prebuilt->table, altered_table,
ctx->m_stage, ctx->new_table);
}
/* Init online ddl status variables */
onlineddl_rowlog_rows = 0;
onlineddl_rowlog_pct_used = 0;
onlineddl_pct_progress = 0;
if (s_templ) {
ut_ad(ctx->need_rebuild() || ctx->num_to_add_vcol > 0
|| rebuild_templ);
dict_free_vc_templ(s_templ);
UT_DELETE(s_templ);
ctx->new_table->vc_templ = old_templ;
}
DEBUG_SYNC_C("inplace_after_index_build");
DBUG_EXECUTE_IF("create_index_fail",
error = DB_DUPLICATE_KEY;
m_prebuilt->trx->error_key_num = ULINT_UNDEFINED;);
/* After an error, remove all those index definitions
from the dictionary which were defined. */
switch (error) {
KEY* dup_key;
default:
my_error_innodb(error,
table_share->table_name.str,
m_prebuilt->table->flags);
break;
all_done:
case DB_SUCCESS:
ut_d(dict_sys.freeze(SRW_LOCK_CALL));
ut_d(dict_table_check_for_dup_indexes(
m_prebuilt->table, CHECK_PARTIAL_OK));
ut_d(dict_sys.unfreeze());
/* prebuilt->table->n_ref_count can be anything here,
given that we hold at most a shared lock on the table. */
goto ok_exit;
case DB_DUPLICATE_KEY:
if (m_prebuilt->trx->error_key_num == ULINT_UNDEFINED
|| ha_alter_info->key_count == 0) {
/* This should be the hidden index on
FTS_DOC_ID, or there is no PRIMARY KEY in the
table. Either way, we should be seeing and
reporting a bogus duplicate key error. */
dup_key = NULL;
} else {
DBUG_ASSERT(m_prebuilt->trx->error_key_num
< ha_alter_info->key_count);
dup_key = &ha_alter_info->key_info_buffer[
m_prebuilt->trx->error_key_num];
}
print_keydup_error(altered_table, dup_key, MYF(0));
break;
case DB_ONLINE_LOG_TOO_BIG:
DBUG_ASSERT(ctx->online);
my_error(ER_INNODB_ONLINE_LOG_TOO_BIG, MYF(0),
get_error_key_name(m_prebuilt->trx->error_key_num,
ha_alter_info, m_prebuilt->table));
break;
case DB_INDEX_CORRUPT:
my_error(ER_INDEX_CORRUPT, MYF(0),
get_error_key_name(m_prebuilt->trx->error_key_num,
ha_alter_info, m_prebuilt->table));
break;
case DB_DECRYPTION_FAILED:
String str;
const char* engine= table_type();
get_error_message(HA_ERR_DECRYPTION_FAILED, &str);
my_error(ER_GET_ERRMSG, MYF(0), HA_ERR_DECRYPTION_FAILED,
str.c_ptr(), engine);
break;
}
/* prebuilt->table->n_ref_count can be anything here, given
that we hold at most a shared lock on the table. */
m_prebuilt->trx->error_info = NULL;
ctx->trx->error_state = DB_SUCCESS;
DBUG_RETURN(true);
}
/** Free the modification log for online table rebuild.
@param table table that was being rebuilt online */
static
void
innobase_online_rebuild_log_free(
/*=============================*/
dict_table_t* table)
{
dict_index_t* clust_index = dict_table_get_first_index(table);
ut_ad(dict_sys.locked());
clust_index->lock.x_lock(SRW_LOCK_CALL);
if (clust_index->online_log) {
ut_ad(dict_index_get_online_status(clust_index)
== ONLINE_INDEX_CREATION);
clust_index->online_status = ONLINE_INDEX_COMPLETE;
row_log_free(clust_index->online_log);
clust_index->online_log = NULL;
DEBUG_SYNC_C("innodb_online_rebuild_log_free_aborted");
}
DBUG_ASSERT(dict_index_get_online_status(clust_index)
== ONLINE_INDEX_COMPLETE);
clust_index->lock.x_unlock();
}
/** For each user column, which is part of an index which is not going to be
dropped, it checks if the column number of the column is same as col_no
argument passed.
@param[in] table table
@param[in] col_no column number
@param[in] is_v if this is a virtual column
@param[in] only_committed whether to consider only committed indexes
@retval true column exists
@retval false column does not exist, true if column is system column or
it is in the index. */
static
bool
check_col_exists_in_indexes(
const dict_table_t* table,
ulint col_no,
bool is_v,
bool only_committed = false)
{
/* This function does not check system columns */
if (!is_v && dict_table_get_nth_col(table, col_no)->mtype == DATA_SYS) {
return(true);
}
for (const dict_index_t* index = dict_table_get_first_index(table);
index;
index = dict_table_get_next_index(index)) {
if (only_committed
? !index->is_committed()
: index->to_be_dropped) {
continue;
}
for (ulint i = 0; i < index->n_user_defined_cols; i++) {
const dict_col_t* idx_col
= dict_index_get_nth_col(index, i);
if (is_v && idx_col->is_virtual()) {
const dict_v_col_t* v_col = reinterpret_cast<
const dict_v_col_t*>(idx_col);
if (v_col->v_pos == col_no) {
return(true);
}
}
if (!is_v && !idx_col->is_virtual()
&& dict_col_get_no(idx_col) == col_no) {
return(true);
}
}
}
return(false);
}
/** Rollback a secondary index creation, drop the indexes with
temparary index prefix
@param user_table InnoDB table
@param table the TABLE
@param locked TRUE=table locked, FALSE=may need to do a lazy drop
@param trx the transaction
@param alter_trx transaction which takes S-lock on the table
while creating the index */
static
void
innobase_rollback_sec_index(
dict_table_t* user_table,
const TABLE* table,
bool locked,
trx_t* trx,
const trx_t* alter_trx=NULL)
{
row_merge_drop_indexes(trx, user_table, locked, alter_trx);
/* Free the table->fts only if there is no FTS_DOC_ID
in the table */
if (user_table->fts
&& !DICT_TF2_FLAG_IS_SET(user_table,
DICT_TF2_FTS_HAS_DOC_ID)
&& !innobase_fulltext_exist(table)) {
user_table->fts->~fts_t();
user_table->fts = nullptr;
}
}
MY_ATTRIBUTE((nonnull, warn_unused_result))
/** Roll back the changes made during prepare_inplace_alter_table()
and inplace_alter_table() inside the storage engine. Note that the
allowed level of concurrency during this operation will be the same as
for inplace_alter_table() and thus might be higher than during
prepare_inplace_alter_table(). (E.g concurrent writes were blocked
during prepare, but might not be during commit).
@param ha_alter_info Data used during in-place alter.
@param table the TABLE
@param prebuilt the prebuilt struct
@retval true Failure
@retval false Success
*/
inline bool rollback_inplace_alter_table(Alter_inplace_info *ha_alter_info,
const TABLE *table,
row_prebuilt_t *prebuilt)
{
bool fail= false;
ha_innobase_inplace_ctx *ctx= static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx);
DBUG_ENTER("rollback_inplace_alter_table");
DEBUG_SYNC_C("innodb_rollback_inplace_alter_table");
if (!ctx)
/* If we have not started a transaction yet,
(almost) nothing has been or needs to be done. */
dict_sys.lock(SRW_LOCK_CALL);
else if (!ctx->trx->is_started())
goto free_and_exit;
else if (ctx->new_table)
{
ut_ad(ctx->trx->state == TRX_STATE_ACTIVE);
const bool fts_exist= (ctx->new_table->flags2 &
(DICT_TF2_FTS_HAS_DOC_ID | DICT_TF2_FTS)) ||
ctx->adding_fulltext_index();
if (ctx->need_rebuild())
{
if (fts_exist)
{
fts_optimize_remove_table(ctx->new_table);
purge_sys.stop_FTS(*ctx->new_table);
}
dberr_t err= lock_table_for_trx(ctx->new_table, ctx->trx, LOCK_X);
if (fts_exist)
{
if (err == DB_SUCCESS)
err= fts_lock_common_tables(ctx->trx, *ctx->new_table);
for (const dict_index_t* index= ctx->new_table->indexes.start;
err == DB_SUCCESS && index; index= index->indexes.next)
if (index->type & DICT_FTS)
err= fts_lock_index_tables(ctx->trx, *index);
}
if (err == DB_SUCCESS)
err= lock_sys_tables(ctx->trx);
row_mysql_lock_data_dictionary(ctx->trx);
/* Detach ctx->new_table from dict_index_t::online_log. */
innobase_online_rebuild_log_free(ctx->old_table);
ut_d(const bool last_handle=) ctx->new_table->release();
ut_ad(last_handle);
if (err == DB_SUCCESS)
err= ctx->trx->drop_table(*ctx->new_table);
if (err == DB_SUCCESS)
for (const dict_index_t* index= ctx->new_table->indexes.start; index;
index= index->indexes.next)
if (index->type & DICT_FTS)
if (dberr_t err2= fts_drop_index_tables(ctx->trx, *index))
err= err2;
if (err != DB_SUCCESS)
{
my_error_innodb(err, table->s->table_name.str, ctx->new_table->flags);
fail= true;
}
}
else
{
DBUG_ASSERT(!(ha_alter_info->handler_flags & ALTER_ADD_PK_INDEX));
DBUG_ASSERT(ctx->old_table == prebuilt->table);
uint &innodb_lock_wait_timeout=
thd_lock_wait_timeout(ctx->trx->mysql_thd);
const uint save_timeout= innodb_lock_wait_timeout;
innodb_lock_wait_timeout= ~0U; /* infinite */
dict_index_t *old_clust_index= ctx->old_table->indexes.start;
old_clust_index->lock.x_lock(SRW_LOCK_CALL);
old_clust_index->online_log= nullptr;
old_clust_index->lock.x_unlock();
if (fts_exist)
{
const dict_index_t *fts_index= nullptr;
for (ulint a= 0; a < ctx->num_to_add_index; a++)
{
const dict_index_t *index = ctx->add_index[a];
if (index->type & DICT_FTS)
fts_index= index;
}
/* Remove the fts table from fts_optimize_wq if there are
no FTS secondary index exist other than newly added one */
if (fts_index &&
(ib_vector_is_empty(prebuilt->table->fts->indexes) ||
(ib_vector_size(prebuilt->table->fts->indexes) == 1 &&
fts_index == static_cast<dict_index_t*>(
ib_vector_getp(prebuilt->table->fts->indexes, 0)))))
fts_optimize_remove_table(prebuilt->table);
purge_sys.stop_FTS(*prebuilt->table);
ut_a(!fts_index || !fts_lock_index_tables(ctx->trx, *fts_index));
ut_a(!fts_lock_common_tables(ctx->trx, *ctx->new_table));
ut_a(!lock_sys_tables(ctx->trx));
}
else
{
ut_a(!lock_table_for_trx(dict_sys.sys_indexes, ctx->trx, LOCK_X));
ut_a(!lock_table_for_trx(dict_sys.sys_fields, ctx->trx, LOCK_X));
}
innodb_lock_wait_timeout= save_timeout;
DEBUG_SYNC_C("innodb_rollback_after_fts_lock");
row_mysql_lock_data_dictionary(ctx->trx);
ctx->rollback_instant();
innobase_rollback_sec_index(ctx->old_table, table,
ha_alter_info->alter_info->requested_lock ==
Alter_info::ALTER_TABLE_LOCK_EXCLUSIVE,
ctx->trx, prebuilt->trx);
ctx->clean_new_vcol_index();
ctx->cleanup_col_collation();
ut_d(dict_table_check_for_dup_indexes(ctx->old_table, CHECK_ABORTED_OK));
}
DEBUG_SYNC(ctx->trx->mysql_thd, "before_commit_rollback_inplace");
commit_unlock_and_unlink(ctx->trx);
if (fts_exist)
purge_sys.resume_FTS();
if (ctx->old_table->fts)
{
dict_sys.lock(SRW_LOCK_CALL);
ut_ad(fts_check_cached_index(ctx->old_table));
fts_optimize_add_table(ctx->old_table);
dict_sys.unlock();
}
goto free_and_exit;
}
else
{
free_and_exit:
DBUG_ASSERT(ctx->prebuilt == prebuilt);
ctx->trx->free();
ctx->trx= nullptr;
dict_sys.lock(SRW_LOCK_CALL);
if (ctx->add_vcol)
{
for (ulint i = 0; i < ctx->num_to_add_vcol; i++)
ctx->add_vcol[i].~dict_v_col_t();
ctx->num_to_add_vcol= 0;
ctx->add_vcol= nullptr;
}
for (ulint i= 0; i < ctx->num_to_add_fk; i++)
dict_foreign_free(ctx->add_fk[i]);
/* Clear the to_be_dropped flags in the data dictionary cache.
The flags may already have been cleared, in case an error was
detected in commit_inplace_alter_table(). */
for (ulint i= 0; i < ctx->num_to_drop_index; i++)
{
dict_index_t *index= ctx->drop_index[i];
DBUG_ASSERT(index->is_committed());
index->to_be_dropped= 0;
}
}
DBUG_ASSERT(!prebuilt->table->indexes.start->online_log);
DBUG_ASSERT(prebuilt->table->indexes.start->online_status ==
ONLINE_INDEX_COMPLETE);
/* Reset dict_col_t::ord_part for unindexed columns */
for (ulint i= 0; i < dict_table_get_n_cols(prebuilt->table); i++)
{
dict_col_t &col= prebuilt->table->cols[i];
if (col.ord_part && !check_col_exists_in_indexes(prebuilt->table, i, false,
true))
col.ord_part= 0;
}
for (ulint i = 0; i < dict_table_get_n_v_cols(prebuilt->table); i++)
{
dict_col_t &col = prebuilt->table->v_cols[i].m_col;
if (col.ord_part && !check_col_exists_in_indexes(prebuilt->table, i, true,
true))
col.ord_part= 0;
}
dict_sys.unlock();
trx_commit_for_mysql(prebuilt->trx);
prebuilt->trx_id = 0;
MONITOR_ATOMIC_DEC(MONITOR_PENDING_ALTER_TABLE);
DBUG_RETURN(fail);
}
/** Drop a FOREIGN KEY constraint from the data dictionary tables.
@param trx data dictionary transaction
@param table_name Table name in MySQL
@param foreign_id Foreign key constraint identifier
@retval true Failure
@retval false Success */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_drop_foreign_try(
/*======================*/
trx_t* trx,
const char* table_name,
const char* foreign_id)
{
DBUG_ENTER("innobase_drop_foreign_try");
DBUG_ASSERT(trx->dict_operation);
ut_ad(trx->dict_operation_lock_mode);
ut_ad(dict_sys.locked());
/* Drop the constraint from the data dictionary. */
static const char sql[] =
"PROCEDURE DROP_FOREIGN_PROC () IS\n"
"BEGIN\n"
"DELETE FROM SYS_FOREIGN WHERE ID=:id;\n"
"DELETE FROM SYS_FOREIGN_COLS WHERE ID=:id;\n"
"END;\n";
dberr_t error;
pars_info_t* info;
info = pars_info_create();
pars_info_add_str_literal(info, "id", foreign_id);
trx->op_info = "dropping foreign key constraint from dictionary";
error = que_eval_sql(info, sql, trx);
trx->op_info = "";
DBUG_EXECUTE_IF("ib_drop_foreign_error",
error = DB_OUT_OF_FILE_SPACE;);
if (error != DB_SUCCESS) {
my_error_innodb(error, table_name, 0);
trx->error_state = DB_SUCCESS;
DBUG_RETURN(true);
}
DBUG_RETURN(false);
}
/** Rename a column in the data dictionary tables.
@param[in] ctx ALTER TABLE context
@param[in,out] trx Data dictionary transaction
@param[in] table_name Table name in MySQL
@param[in] from old column name
@param[in] to new column name
@retval true Failure
@retval false Success */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_rename_column_try(
const ha_innobase_inplace_ctx& ctx,
trx_t* trx,
const char* table_name,
const char* from,
const char* to)
{
dberr_t error;
bool clust_has_wide_format = false;
DBUG_ENTER("innobase_rename_column_try");
DBUG_ASSERT(trx->dict_operation);
ut_ad(trx->dict_operation_lock_mode);
ut_ad(dict_sys.locked());
if (ctx.need_rebuild()) {
goto rename_foreign;
}
error = DB_SUCCESS;
trx->op_info = "renaming column in SYS_FIELDS";
for (const dict_index_t* index = dict_table_get_first_index(
ctx.old_table);
index != NULL;
index = dict_table_get_next_index(index)) {
bool wide_format = false;
for (size_t i = 0; i < dict_index_get_n_fields(index); i++) {
dict_field_t* field= dict_index_get_nth_field(index, i);
if (field->prefix_len || field->descending) {
wide_format = true;
break;
}
}
for (ulint i = 0; i < dict_index_get_n_fields(index); i++) {
const dict_field_t& f = index->fields[i];
DBUG_ASSERT(!f.name == f.col->is_dropped());
if (!f.name || my_strcasecmp(system_charset_info,
f.name, from)) {
continue;
}
pars_info_t* info = pars_info_create();
ulint pos = wide_format
? i << 16 | f.prefix_len
| !!f.descending << 15
: i;
pars_info_add_ull_literal(info, "indexid", index->id);
pars_info_add_int4_literal(info, "nth", pos);
pars_info_add_str_literal(info, "new", to);
error = que_eval_sql(
info,
"PROCEDURE RENAME_SYS_FIELDS_PROC () IS\n"
"BEGIN\n"
"UPDATE SYS_FIELDS SET COL_NAME=:new\n"
"WHERE INDEX_ID=:indexid\n"
"AND POS=:nth;\n"
"END;\n", trx);
DBUG_EXECUTE_IF("ib_rename_column_error",
error = DB_OUT_OF_FILE_SPACE;);
if (error != DB_SUCCESS) {
goto err_exit;
}
if (!wide_format || !clust_has_wide_format
|| f.prefix_len || f.descending) {
continue;
}
/* For secondary indexes, the
wide_format check can be 'polluted'
by PRIMARY KEY column prefix or descending
field. Try also the simpler encoding
of SYS_FIELDS.POS. */
info = pars_info_create();
pars_info_add_ull_literal(info, "indexid", index->id);
pars_info_add_int4_literal(info, "nth", i);
pars_info_add_str_literal(info, "new", to);
error = que_eval_sql(
info,
"PROCEDURE RENAME_SYS_FIELDS_PROC () IS\n"
"BEGIN\n"
"UPDATE SYS_FIELDS SET COL_NAME=:new\n"
"WHERE INDEX_ID=:indexid\n"
"AND POS=:nth;\n"
"END;\n", trx);
if (error != DB_SUCCESS) {
goto err_exit;
}
}
if (index == dict_table_get_first_index(ctx.old_table)) {
clust_has_wide_format = wide_format;
}
}
if (error != DB_SUCCESS) {
err_exit:
my_error_innodb(error, table_name, 0);
trx->error_state = DB_SUCCESS;
trx->op_info = "";
DBUG_RETURN(true);
}
rename_foreign:
trx->op_info = "renaming column in SYS_FOREIGN_COLS";
std::set<dict_foreign_t*> fk_evict;
bool foreign_modified;
for (dict_foreign_set::const_iterator it = ctx.old_table->foreign_set.begin();
it != ctx.old_table->foreign_set.end();
++it) {
dict_foreign_t* foreign = *it;
foreign_modified = false;
for (unsigned i = 0; i < foreign->n_fields; i++) {
if (my_strcasecmp(system_charset_info,
foreign->foreign_col_names[i],
from)) {
continue;
}
/* Ignore the foreign key rename if fk info
is being dropped. */
if (innobase_dropping_foreign(
foreign, ctx.drop_fk,
ctx.num_to_drop_fk)) {
continue;
}
pars_info_t* info = pars_info_create();
pars_info_add_str_literal(info, "id", foreign->id);
pars_info_add_int4_literal(info, "nth", i);
pars_info_add_str_literal(info, "new", to);
error = que_eval_sql(
info,
"PROCEDURE RENAME_SYS_FOREIGN_F_PROC () IS\n"
"BEGIN\n"
"UPDATE SYS_FOREIGN_COLS\n"
"SET FOR_COL_NAME=:new\n"
"WHERE ID=:id AND POS=:nth;\n"
"END;\n", trx);
if (error != DB_SUCCESS) {
goto err_exit;
}
foreign_modified = true;
}
if (foreign_modified) {
fk_evict.insert(foreign);
}
}
for (dict_foreign_set::const_iterator it
= ctx.old_table->referenced_set.begin();
it != ctx.old_table->referenced_set.end();
++it) {
foreign_modified = false;
dict_foreign_t* foreign = *it;
for (unsigned i = 0; i < foreign->n_fields; i++) {
if (my_strcasecmp(system_charset_info,
foreign->referenced_col_names[i],
from)) {
continue;
}
pars_info_t* info = pars_info_create();
pars_info_add_str_literal(info, "id", foreign->id);
pars_info_add_int4_literal(info, "nth", i);
pars_info_add_str_literal(info, "new", to);
error = que_eval_sql(
info,
"PROCEDURE RENAME_SYS_FOREIGN_R_PROC () IS\n"
"BEGIN\n"
"UPDATE SYS_FOREIGN_COLS\n"
"SET REF_COL_NAME=:new\n"
"WHERE ID=:id AND POS=:nth;\n"
"END;\n", trx);
if (error != DB_SUCCESS) {
goto err_exit;
}
foreign_modified = true;
}
if (foreign_modified) {
fk_evict.insert(foreign);
}
}
/* Reload the foreign key info for instant table too. */
if (ctx.need_rebuild() || ctx.is_instant()) {
std::for_each(fk_evict.begin(), fk_evict.end(),
dict_foreign_remove_from_cache);
}
trx->op_info = "";
DBUG_RETURN(false);
}
/** Rename columns in the data dictionary tables.
@param ha_alter_info Data used during in-place alter.
@param ctx In-place ALTER TABLE context
@param table the TABLE
@param trx data dictionary transaction
@param table_name Table name in MySQL
@retval true Failure
@retval false Success */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_rename_columns_try(
/*========================*/
Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx*ctx,
const TABLE* table,
trx_t* trx,
const char* table_name)
{
uint i = 0;
DBUG_ASSERT(ctx->need_rebuild());
DBUG_ASSERT(ha_alter_info->handler_flags
& ALTER_COLUMN_NAME);
for (Field** fp = table->field; *fp; fp++, i++) {
if (!((*fp)->flags & FIELD_IS_RENAMED)) {
continue;
}
for (const Create_field& cf :
ha_alter_info->alter_info->create_list) {
if (cf.field == *fp) {
if (innobase_rename_column_try(
*ctx, trx, table_name,
cf.field->field_name.str,
cf.field_name.str)) {
return(true);
}
goto processed_field;
}
}
ut_error;
processed_field:
continue;
}
return(false);
}
/** Enlarge a column in the data dictionary tables.
@param ctx In-place ALTER TABLE context
@param trx data dictionary transaction
@param table_name Table name in MySQL
@param pos 0-based index to user_table->cols[] or user_table->v_cols[]
@param f new column
@param is_v if it's a virtual column
@retval true Failure
@retval false Success */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_rename_or_enlarge_column_try(
ha_innobase_inplace_ctx*ctx,
trx_t* trx,
const char* table_name,
ulint pos,
const Field& f,
bool is_v)
{
dict_col_t* col;
dict_table_t* user_table = ctx->old_table;
DBUG_ENTER("innobase_rename_or_enlarge_column_try");
DBUG_ASSERT(!ctx->need_rebuild());
DBUG_ASSERT(trx->dict_operation);
ut_ad(trx->dict_operation_lock_mode);
ut_ad(dict_sys.locked());
ulint n_base;
if (is_v) {
dict_v_col_t* v_col= dict_table_get_nth_v_col(user_table, pos);
pos = dict_create_v_col_pos(v_col->v_pos, v_col->m_col.ind);
col = &v_col->m_col;
n_base = v_col->num_base;
} else {
col = dict_table_get_nth_col(user_table, pos);
n_base = 0;
}
unsigned prtype;
uint8_t mtype;
uint16_t len;
get_type(f, prtype, mtype, len);
DBUG_ASSERT(!dtype_is_string_type(col->mtype)
|| col->mbminlen == f.charset()->mbminlen);
DBUG_ASSERT(col->len <= len);
#ifdef UNIV_DEBUG
ut_ad(col->mbminlen <= col->mbmaxlen);
switch (mtype) {
case DATA_MYSQL:
if (!(prtype & DATA_BINARY_TYPE) || user_table->not_redundant()
|| col->mbminlen != col->mbmaxlen) {
/* NOTE: we could allow this when !(prtype &
DATA_BINARY_TYPE) and ROW_FORMAT is not REDUNDANT and
mbminlen<mbmaxlen. That is, we treat a UTF-8 CHAR(n)
column somewhat like a VARCHAR. */
break;
}
/* fall through */
case DATA_FIXBINARY:
case DATA_CHAR:
ut_ad(col->len == len);
break;
case DATA_BINARY:
case DATA_VARCHAR:
case DATA_VARMYSQL:
case DATA_DECIMAL:
case DATA_BLOB:
break;
default:
ut_ad(!((col->prtype ^ prtype) & ~DATA_VERSIONED));
ut_ad(col->mtype == mtype);
ut_ad(col->len == len);
}
#endif /* UNIV_DEBUG */
const char* col_name = col->name(*user_table);
const bool same_name = !strcmp(col_name, f.field_name.str);
if (!same_name
&& innobase_rename_column_try(*ctx, trx, table_name,
col_name, f.field_name.str)) {
DBUG_RETURN(true);
}
if (same_name
&& col->prtype == prtype && col->mtype == mtype
&& col->len == len) {
DBUG_RETURN(false);
}
DBUG_RETURN(innodb_insert_sys_columns(user_table->id, pos,
f.field_name.str,
mtype, prtype, len,
n_base, trx, true));
}
/** Rename or enlarge columns in the data dictionary cache
as part of commit_try_norebuild().
@param ha_alter_info Data used during in-place alter.
@param ctx In-place ALTER TABLE context
@param altered_table metadata after ALTER TABLE
@param table metadata before ALTER TABLE
@param trx data dictionary transaction
@param table_name Table name in MySQL
@retval true Failure
@retval false Success */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_rename_or_enlarge_columns_try(
Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx*ctx,
const TABLE* altered_table,
const TABLE* table,
trx_t* trx,
const char* table_name)
{
DBUG_ENTER("innobase_rename_or_enlarge_columns_try");
if (!(ha_alter_info->handler_flags
& (ALTER_COLUMN_TYPE_CHANGE_BY_ENGINE
| ALTER_COLUMN_NAME))) {
DBUG_RETURN(false);
}
ulint i = 0;
ulint num_v = 0;
for (Field** fp = table->field; *fp; fp++, i++) {
const bool is_v = !(*fp)->stored_in_db();
ulint idx = is_v ? num_v++ : i - num_v;
Field** af = altered_table->field;
for (const Create_field& cf :
ha_alter_info->alter_info->create_list) {
if (cf.field == *fp) {
if (innobase_rename_or_enlarge_column_try(
ctx, trx, table_name,
idx, **af, is_v)) {
DBUG_RETURN(true);
}
break;
}
af++;
}
}
DBUG_RETURN(false);
}
/** Rename or enlarge columns in the data dictionary cache
as part of commit_cache_norebuild().
@param ha_alter_info Data used during in-place alter.
@param altered_table metadata after ALTER TABLE
@param table metadata before ALTER TABLE
@param user_table InnoDB table that was being altered */
static MY_ATTRIBUTE((nonnull))
void
innobase_rename_or_enlarge_columns_cache(
/*=====================================*/
Alter_inplace_info* ha_alter_info,
const TABLE* altered_table,
const TABLE* table,
dict_table_t* user_table)
{
if (!(ha_alter_info->handler_flags
& (ALTER_COLUMN_TYPE_CHANGE_BY_ENGINE
| ALTER_COLUMN_NAME))) {
return;
}
uint i = 0;
ulint num_v = 0;
for (Field** fp = table->field; *fp; fp++, i++) {
const bool is_virtual = !(*fp)->stored_in_db();
Field** af = altered_table->field;
for (Create_field& cf :
ha_alter_info->alter_info->create_list) {
if (cf.field != *fp) {
af++;
continue;
}
ulint col_n = is_virtual ? num_v : i - num_v;
dict_col_t *col = is_virtual
? &dict_table_get_nth_v_col(user_table, col_n)
->m_col
: dict_table_get_nth_col(user_table, col_n);
const bool is_string= dtype_is_string_type(col->mtype);
DBUG_ASSERT(col->mbminlen
== (is_string
? (*af)->charset()->mbminlen : 0));
unsigned prtype;
uint8_t mtype;
uint16_t len;
get_type(**af, prtype, mtype, len);
DBUG_ASSERT(is_string == dtype_is_string_type(mtype));
col->prtype = prtype;
col->mtype = mtype;
col->len = len;
col->mbmaxlen = is_string
? (*af)->charset()->mbmaxlen & 7: 0;
if ((*fp)->flags & FIELD_IS_RENAMED) {
dict_mem_table_col_rename(
user_table, col_n,
cf.field->field_name.str,
(*af)->field_name.str, is_virtual);
}
break;
}
if (is_virtual) {
num_v++;
}
}
}
/** Set the auto-increment value of the table on commit.
@param ha_alter_info Data used during in-place alter
@param ctx In-place ALTER TABLE context
@param altered_table MySQL table that is being altered
@param old_table MySQL table as it is before the ALTER operation
@return whether the operation failed (and my_error() was called) */
static MY_ATTRIBUTE((nonnull))
bool
commit_set_autoinc(
Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx*ctx,
const TABLE* altered_table,
const TABLE* old_table)
{
DBUG_ENTER("commit_set_autoinc");
if (!altered_table->found_next_number_field) {
/* There is no AUTO_INCREMENT column in the table
after the ALTER operation. */
} else if (ctx->add_autoinc != ULINT_UNDEFINED) {
ut_ad(ctx->need_rebuild());
/* An AUTO_INCREMENT column was added. Get the last
value from the sequence, which may be based on a
supplied AUTO_INCREMENT value. */
ib_uint64_t autoinc = ctx->sequence.last();
ctx->new_table->autoinc = autoinc;
/* Bulk index creation does not update
PAGE_ROOT_AUTO_INC, so we must persist the "last used"
value here. */
btr_write_autoinc(dict_table_get_first_index(ctx->new_table),
autoinc - 1, true);
} else if ((ha_alter_info->handler_flags
& ALTER_CHANGE_CREATE_OPTION)
&& (ha_alter_info->create_info->used_fields
& HA_CREATE_USED_AUTO)) {
if (!ctx->old_table->space) {
my_error(ER_TABLESPACE_DISCARDED, MYF(0),
old_table->s->table_name.str);
DBUG_RETURN(true);
}
/* An AUTO_INCREMENT value was supplied by the user.
It must be persisted to the data file. */
const Field* ai = old_table->found_next_number_field;
ut_ad(!strcmp(dict_table_get_col_name(ctx->old_table,
innodb_col_no(ai)),
ai->field_name.str));
ib_uint64_t autoinc
= ha_alter_info->create_info->auto_increment_value;
if (autoinc == 0) {
autoinc = 1;
}
if (autoinc >= ctx->old_table->autoinc) {
/* Persist the predecessor of the
AUTO_INCREMENT value as the last used one. */
ctx->new_table->autoinc = autoinc--;
} else {
/* Mimic ALGORITHM=COPY in the following scenario:
CREATE TABLE t (a SERIAL);
INSERT INTO t SET a=100;
ALTER TABLE t AUTO_INCREMENT = 1;
INSERT INTO t SET a=NULL;
SELECT * FROM t;
By default, ALGORITHM=INPLACE would reset the
sequence to 1, while after ALGORITHM=COPY, the
last INSERT would use a value larger than 100.
We could only search the tree to know current
max counter in the table and compare. */
const dict_col_t* autoinc_col
= dict_table_get_nth_col(ctx->old_table,
innodb_col_no(ai));
auto index = ctx->old_table->get_index(*autoinc_col);
ut_ad(index);
ib_uint64_t max_in_table = index
? row_search_max_autoinc(index)
: 0;
if (autoinc <= max_in_table) {
ctx->new_table->autoinc = innobase_next_autoinc(
max_in_table, 1,
ctx->prebuilt->autoinc_increment,
ctx->prebuilt->autoinc_offset,
innobase_get_int_col_max_value(ai));
/* Persist the maximum value as the
last used one. */
autoinc = max_in_table;
} else {
/* Persist the predecessor of the
AUTO_INCREMENT value as the last used one. */
ctx->new_table->autoinc = autoinc--;
}
}
btr_write_autoinc(dict_table_get_first_index(ctx->new_table),
autoinc, true);
} else if (ctx->need_rebuild()) {
/* No AUTO_INCREMENT value was specified.
Copy it from the old table. */
ctx->new_table->autoinc = ctx->old_table->autoinc;
/* The persistent value was already copied in
prepare_inplace_alter_table_dict() when ctx->new_table
was created. If this was a LOCK=NONE operation, the
AUTO_INCREMENT values would be updated during
row_log_table_apply(). If this was LOCK!=NONE,
the table contents could not possibly have changed
between prepare_inplace and commit_inplace. */
}
DBUG_RETURN(false);
}
/** Add or drop foreign key constraints to the data dictionary tables,
but do not touch the data dictionary cache.
@param ha_alter_info Data used during in-place alter
@param ctx In-place ALTER TABLE context
@param trx Data dictionary transaction
@param table_name Table name in MySQL
@retval true Failure
@retval false Success
*/
static MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
innobase_update_foreign_try(
/*========================*/
ha_innobase_inplace_ctx*ctx,
trx_t* trx,
const char* table_name)
{
ulint foreign_id;
ulint i;
DBUG_ENTER("innobase_update_foreign_try");
foreign_id = dict_table_get_highest_foreign_id(ctx->new_table);
foreign_id++;
for (i = 0; i < ctx->num_to_add_fk; i++) {
dict_foreign_t* fk = ctx->add_fk[i];
ut_ad(fk->foreign_table == ctx->new_table
|| fk->foreign_table == ctx->old_table);
dberr_t error = dict_create_add_foreign_id(
&foreign_id, ctx->old_table->name.m_name, fk);
if (error != DB_SUCCESS) {
my_error(ER_TOO_LONG_IDENT, MYF(0),
fk->id);
DBUG_RETURN(true);
}
if (!fk->foreign_index) {
fk->foreign_index = dict_foreign_find_index(
ctx->new_table, ctx->col_names,
fk->foreign_col_names,
fk->n_fields, fk->referenced_index, TRUE,
fk->type
& (fk->DELETE_SET_NULL
| fk->UPDATE_SET_NULL),
NULL, NULL, NULL);
if (!fk->foreign_index) {
my_error(ER_FK_INCORRECT_OPTION,
MYF(0), table_name, fk->id);
DBUG_RETURN(true);
}
}
/* The fk->foreign_col_names[] uses renamed column
names, while the columns in ctx->old_table have not
been renamed yet. */
error = dict_create_add_foreign_to_dictionary(
ctx->old_table->name.m_name, fk, trx);
DBUG_EXECUTE_IF(
"innodb_test_cannot_add_fk_system",
error = DB_ERROR;);
if (error != DB_SUCCESS) {
my_error(ER_FK_FAIL_ADD_SYSTEM, MYF(0),
fk->id);
DBUG_RETURN(true);
}
}
for (i = 0; i < ctx->num_to_drop_fk; i++) {
dict_foreign_t* fk = ctx->drop_fk[i];
DBUG_ASSERT(fk->foreign_table == ctx->old_table);
if (innobase_drop_foreign_try(trx, table_name, fk->id)) {
DBUG_RETURN(true);
}
}
DBUG_RETURN(false);
}
/** Update the foreign key constraint definitions in the data dictionary cache
after the changes to data dictionary tables were committed.
@param ctx In-place ALTER TABLE context
@param user_thd MySQL connection
@return InnoDB error code (should always be DB_SUCCESS) */
static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
innobase_update_foreign_cache(
/*==========================*/
ha_innobase_inplace_ctx* ctx,
THD* user_thd)
{
dict_table_t* user_table;
dberr_t err = DB_SUCCESS;
DBUG_ENTER("innobase_update_foreign_cache");
ut_ad(dict_sys.locked());
user_table = ctx->old_table;
/* Discard the added foreign keys, because we will
load them from the data dictionary. */
for (ulint i = 0; i < ctx->num_to_add_fk; i++) {
dict_foreign_t* fk = ctx->add_fk[i];
dict_foreign_free(fk);
}
if (ctx->need_rebuild()) {
/* The rebuilt table is already using the renamed
column names. No need to pass col_names or to drop
constraints from the data dictionary cache. */
DBUG_ASSERT(!ctx->col_names);
user_table = ctx->new_table;
} else {
/* Drop the foreign key constraints if the
table was not rebuilt. If the table is rebuilt,
there would not be any foreign key contraints for
it yet in the data dictionary cache. */
for (ulint i = 0; i < ctx->num_to_drop_fk; i++) {
dict_foreign_t* fk = ctx->drop_fk[i];
dict_foreign_remove_from_cache(fk);
}
}
/* Load the old or added foreign keys from the data dictionary
and prevent the table from being evicted from the data
dictionary cache (work around the lack of WL#6049). */
dict_names_t fk_tables;
err = dict_load_foreigns(user_table->name.m_name,
ctx->col_names, 1, true,
DICT_ERR_IGNORE_FK_NOKEY,
fk_tables);
if (err == DB_CANNOT_ADD_CONSTRAINT) {
fk_tables.clear();
/* It is possible there are existing foreign key are
loaded with "foreign_key checks" off,
so let's retry the loading with charset_check is off */
err = dict_load_foreigns(user_table->name.m_name,
ctx->col_names, 1, false,
DICT_ERR_IGNORE_NONE,
fk_tables);
/* The load with "charset_check" off is successful, warn
the user that the foreign key has loaded with mis-matched
charset */
if (err == DB_SUCCESS) {
push_warning_printf(
user_thd,
Sql_condition::WARN_LEVEL_WARN,
ER_ALTER_INFO,
"Foreign key constraints for table '%s'"
" are loaded with charset check off",
user_table->name.m_name);
}
}
/* For complete loading of foreign keys, all associated tables must
also be loaded. */
while (err == DB_SUCCESS && !fk_tables.empty()) {
const char *f = fk_tables.front();
if (!dict_sys.load_table({f, strlen(f)})) {
err = DB_TABLE_NOT_FOUND;
ib::error()
<< "Failed to load table "
<< table_name_t(const_cast<char*>(f))
<< " which has a foreign key constraint with"
<< user_table->name;
break;
}
fk_tables.pop_front();
}
DBUG_RETURN(err);
}
/** Changes SYS_COLUMNS.PRTYPE for one column.
@param[in,out] trx transaction
@param[in] table_name table name
@param[in] tableid table ID as in SYS_TABLES
@param[in] pos column position
@param[in] prtype new precise type
@return boolean flag
@retval true on failure
@retval false on success */
static
bool
vers_change_field_try(
trx_t* trx,
const char* table_name,
const table_id_t tableid,
const ulint pos,
const ulint prtype)
{
DBUG_ENTER("vers_change_field_try");
pars_info_t* info = pars_info_create();
pars_info_add_int4_literal(info, "prtype", prtype);
pars_info_add_ull_literal(info,"tableid", tableid);
pars_info_add_int4_literal(info, "pos", pos);
dberr_t error = que_eval_sql(info,
"PROCEDURE CHANGE_COLUMN_MTYPE () IS\n"
"BEGIN\n"
"UPDATE SYS_COLUMNS SET PRTYPE=:prtype\n"
"WHERE TABLE_ID=:tableid AND POS=:pos;\n"
"END;\n", trx);
if (error != DB_SUCCESS) {
my_error_innodb(error, table_name, 0);
trx->error_state = DB_SUCCESS;
trx->op_info = "";
DBUG_RETURN(true);
}
DBUG_RETURN(false);
}
/** Changes fields WITH/WITHOUT SYSTEM VERSIONING property in SYS_COLUMNS.
@param[in] ha_alter_info alter info
@param[in] ctx alter inplace context
@param[in] trx transaction
@param[in] table old table
@return boolean flag
@retval true on failure
@retval false on success */
static
bool
vers_change_fields_try(
const Alter_inplace_info* ha_alter_info,
const ha_innobase_inplace_ctx* ctx,
trx_t* trx,
const TABLE* table)
{
DBUG_ENTER("vers_change_fields_try");
DBUG_ASSERT(ha_alter_info);
DBUG_ASSERT(ctx);
for (const Create_field& create_field : ha_alter_info->alter_info->create_list) {
if (!create_field.field) {
continue;
}
if (create_field.versioning
== Column_definition::VERSIONING_NOT_SET) {
continue;
}
const dict_table_t* new_table = ctx->new_table;
const uint pos = innodb_col_no(create_field.field);
const dict_col_t* col = dict_table_get_nth_col(new_table, pos);
DBUG_ASSERT(!col->vers_sys_start());
DBUG_ASSERT(!col->vers_sys_end());
ulint new_prtype
= create_field.versioning
== Column_definition::WITHOUT_VERSIONING
? col->prtype & ~DATA_VERSIONED
: col->prtype | DATA_VERSIONED;
if (vers_change_field_try(trx, table->s->table_name.str,
new_table->id, pos,
new_prtype)) {
DBUG_RETURN(true);
}
}
DBUG_RETURN(false);
}
/** Changes WITH/WITHOUT SYSTEM VERSIONING for fields
in the data dictionary cache.
@param ha_alter_info Data used during in-place alter
@param ctx In-place ALTER TABLE context
@param table MySQL table as it is before the ALTER operation */
static
void
vers_change_fields_cache(
Alter_inplace_info* ha_alter_info,
const ha_innobase_inplace_ctx* ctx,
const TABLE* table)
{
DBUG_ENTER("vers_change_fields_cache");
DBUG_ASSERT(ha_alter_info);
DBUG_ASSERT(ctx);
DBUG_ASSERT(ha_alter_info->handler_flags & ALTER_COLUMN_UNVERSIONED);
for (const Create_field& create_field :
ha_alter_info->alter_info->create_list) {
if (!create_field.field || create_field.field->vcol_info) {
continue;
}
dict_col_t* col = dict_table_get_nth_col(
ctx->new_table, innodb_col_no(create_field.field));
if (create_field.versioning
== Column_definition::WITHOUT_VERSIONING) {
DBUG_ASSERT(!col->vers_sys_start());
DBUG_ASSERT(!col->vers_sys_end());
col->prtype &= ~DATA_VERSIONED;
} else if (create_field.versioning
== Column_definition::WITH_VERSIONING) {
DBUG_ASSERT(!col->vers_sys_start());
DBUG_ASSERT(!col->vers_sys_end());
col->prtype |= DATA_VERSIONED;
}
}
DBUG_VOID_RETURN;
}
/** Commit the changes made during prepare_inplace_alter_table()
and inplace_alter_table() inside the data dictionary tables,
when rebuilding the table.
@param ha_alter_info Data used during in-place alter
@param ctx In-place ALTER TABLE context
@param altered_table MySQL table that is being altered
@param old_table MySQL table as it is before the ALTER operation
@param statistics_exist whether to update InnoDB persistent statistics
@param trx Data dictionary transaction
@param table_name Table name in MySQL
@retval true Failure
@retval false Success
*/
inline MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
commit_try_rebuild(
/*===============*/
Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx*ctx,
TABLE* altered_table,
const TABLE* old_table,
bool statistics_exist,
trx_t* trx,
const char* table_name)
{
dict_table_t* rebuilt_table = ctx->new_table;
dict_table_t* user_table = ctx->old_table;
DBUG_ENTER("commit_try_rebuild");
DBUG_ASSERT(ctx->need_rebuild());
DBUG_ASSERT(trx->dict_operation_lock_mode);
DBUG_ASSERT(!(ha_alter_info->handler_flags
& ALTER_DROP_FOREIGN_KEY)
|| ctx->num_to_drop_fk > 0);
DBUG_ASSERT(ctx->num_to_drop_fk
<= ha_alter_info->alter_info->drop_list.elements);
innobase_online_rebuild_log_free(user_table);
for (dict_index_t* index = dict_table_get_first_index(rebuilt_table);
index;
index = dict_table_get_next_index(index)) {
DBUG_ASSERT(dict_index_get_online_status(index)
== ONLINE_INDEX_COMPLETE);
DBUG_ASSERT(index->is_committed());
if (index->is_corrupted()) {
my_error(ER_INDEX_CORRUPT, MYF(0), index->name());
DBUG_RETURN(true);
}
}
if (innobase_update_foreign_try(ctx, trx, table_name)) {
DBUG_RETURN(true);
}
/* Clear the to_be_dropped flag in the data dictionary cache
of user_table. */
for (ulint i = 0; i < ctx->num_to_drop_index; i++) {
dict_index_t* index = ctx->drop_index[i];
DBUG_ASSERT(index->table == user_table);
DBUG_ASSERT(index->is_committed());
DBUG_ASSERT(index->to_be_dropped);
index->to_be_dropped = 0;
}
if ((ha_alter_info->handler_flags
& ALTER_COLUMN_NAME)
&& innobase_rename_columns_try(ha_alter_info, ctx, old_table,
trx, table_name)) {
DBUG_RETURN(true);
}
/* The new table must inherit the flag from the
"parent" table. */
if (!user_table->space) {
rebuilt_table->file_unreadable = true;
#if defined __GNUC__ && !defined __clang__
# pragma GCC diagnostic push
# if __GNUC__ < 12 || defined WITH_UBSAN
# pragma GCC diagnostic ignored "-Wconversion"
# endif
#endif
rebuilt_table->flags2 |= DICT_TF2_DISCARDED;
#if defined __GNUC__ && !defined __clang__
# pragma GCC diagnostic pop
#endif
}
/* We can now rename the old table as a temporary table,
rename the new temporary table as the old table and drop the
old table. */
char* old_name= mem_heap_strdup(ctx->heap, user_table->name.m_name);
dberr_t error = row_rename_table_for_mysql(user_table->name.m_name,
ctx->tmp_name, trx,
RENAME_REBUILD);
if (error == DB_SUCCESS) {
error = row_rename_table_for_mysql(
rebuilt_table->name.m_name, old_name, trx,
RENAME_REBUILD);
if (error == DB_SUCCESS) {
/* The statistics for the surviving indexes will be
re-inserted in alter_stats_rebuild(). */
if (statistics_exist) {
error = trx->drop_table_statistics(old_name);
}
if (error == DB_SUCCESS) {
error = trx->drop_table(*user_table);
}
}
}
/* We must be still holding a table handle. */
DBUG_ASSERT(user_table->get_ref_count() == 1);
rebuilt_table->row_id = uint64_t{user_table->row_id};
DBUG_EXECUTE_IF("ib_rebuild_cannot_rename", error = DB_ERROR;);
switch (error) {
case DB_SUCCESS:
DBUG_RETURN(false);
case DB_TABLESPACE_EXISTS:
ut_a(rebuilt_table->get_ref_count() == 1);
my_error(ER_TABLESPACE_EXISTS, MYF(0), ctx->tmp_name);
DBUG_RETURN(true);
case DB_DUPLICATE_KEY:
ut_a(rebuilt_table->get_ref_count() == 1);
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), ctx->tmp_name);
DBUG_RETURN(true);
default:
my_error_innodb(error, table_name, user_table->flags);
DBUG_RETURN(true);
}
}
/** Rename indexes in dictionary.
@param[in] ctx alter info context
@param[in] ha_alter_info Operation used during inplace alter
@param[out] trx transaction to change the index name
in dictionary
@return true if it failed to rename
@return false if it is success. */
static
bool
rename_indexes_try(
const ha_innobase_inplace_ctx* ctx,
const Alter_inplace_info* ha_alter_info,
trx_t* trx)
{
DBUG_ASSERT(ha_alter_info->handler_flags & ALTER_RENAME_INDEX);
for (const Alter_inplace_info::Rename_key_pair& pair :
ha_alter_info->rename_keys) {
dict_index_t* index = dict_table_get_index_on_name(
ctx->old_table, pair.old_key->name.str);
// This was checked previously in
// ha_innobase::prepare_inplace_alter_table()
ut_ad(index);
if (rename_index_try(index, pair.new_key->name.str, trx)) {
return true;
}
}
return false;
}
/** Set of column numbers */
typedef std::set<ulint, std::less<ulint>, ut_allocator<ulint> > col_set;
/** Collect (not instantly dropped) columns from dropped indexes
@param[in] ctx In-place ALTER TABLE context
@param[in, out] drop_col_list list which will be set, containing columns
which is part of index being dropped
@param[in, out] drop_v_col_list list which will be set, containing
virtual columns which is part of index
being dropped */
static
void
collect_columns_from_dropped_indexes(
const ha_innobase_inplace_ctx* ctx,
col_set& drop_col_list,
col_set& drop_v_col_list)
{
for (ulint index_count = 0; index_count < ctx->num_to_drop_index;
index_count++) {
const dict_index_t* index = ctx->drop_index[index_count];
for (ulint col = 0; col < index->n_user_defined_cols; col++) {
const dict_col_t* idx_col
= dict_index_get_nth_col(index, col);
if (idx_col->is_virtual()) {
const dict_v_col_t* v_col
= reinterpret_cast<
const dict_v_col_t*>(idx_col);
drop_v_col_list.insert(v_col->v_pos);
} else {
ulint col_no = dict_col_get_no(idx_col);
if (ctx->col_map
&& ctx->col_map[col_no]
== ULINT_UNDEFINED) {
// this column was instantly dropped
continue;
}
drop_col_list.insert(col_no);
}
}
}
}
/** Change PAGE_COMPRESSED to ON or change the PAGE_COMPRESSION_LEVEL.
@param[in] level PAGE_COMPRESSION_LEVEL
@param[in] table table before the change
@param[in,out] trx data dictionary transaction
@param[in] table_name table name in MariaDB
@return whether the operation succeeded */
MY_ATTRIBUTE((nonnull, warn_unused_result))
static
bool
innobase_page_compression_try(
uint level,
const dict_table_t* table,
trx_t* trx,
const char* table_name)
{
DBUG_ENTER("innobase_page_compression_try");
DBUG_ASSERT(level >= 1);
DBUG_ASSERT(level <= 9);
unsigned flags = table->flags
& ~(0xFU << DICT_TF_POS_PAGE_COMPRESSION_LEVEL);
flags |= 1U << DICT_TF_POS_PAGE_COMPRESSION
| level << DICT_TF_POS_PAGE_COMPRESSION_LEVEL;
if (table->flags == flags) {
DBUG_RETURN(false);
}
pars_info_t* info = pars_info_create();
pars_info_add_ull_literal(info, "id", table->id);
pars_info_add_int4_literal(info, "type",
dict_tf_to_sys_tables_type(flags));
dberr_t error = que_eval_sql(info,
"PROCEDURE CHANGE_COMPRESSION () IS\n"
"BEGIN\n"
"UPDATE SYS_TABLES SET TYPE=:type\n"
"WHERE ID=:id;\n"
"END;\n", trx);
if (error != DB_SUCCESS) {
my_error_innodb(error, table_name, 0);
trx->error_state = DB_SUCCESS;
trx->op_info = "";
DBUG_RETURN(true);
}
DBUG_RETURN(false);
}
/** Evict the table from cache and reopen it. Drop outdated statistics.
@param thd mariadb THD entity
@param table innodb table
@param table_name user-friendly table name for errors
@param ctx ALTER TABLE context
@return newly opened table */
static dict_table_t *innobase_reload_table(THD *thd, dict_table_t *table,
const LEX_CSTRING &table_name,
ha_innobase_inplace_ctx &ctx)
{
if (ctx.is_instant())
{
for (auto i= ctx.old_n_v_cols; i--; )
{
ctx.old_v_cols[i].~dict_v_col_t();
const_cast<unsigned&>(ctx.old_n_v_cols)= 0;
}
}
const table_id_t id= table->id;
table->release();
dict_sys.remove(table);
return dict_table_open_on_id(id, true, DICT_TABLE_OP_NORMAL);
}
/** Commit the changes made during prepare_inplace_alter_table()
and inplace_alter_table() inside the data dictionary tables,
when not rebuilding the table.
@param ha_alter_info Data used during in-place alter
@param ctx In-place ALTER TABLE context
@param old_table MySQL table as it is before the ALTER operation
@param statistics_exist whether to update InnoDB persistent statistics
@param trx Data dictionary transaction
@param table_name Table name in MySQL
@retval true Failure
@retval false Success
*/
inline MY_ATTRIBUTE((nonnull, warn_unused_result))
bool
commit_try_norebuild(
/*=================*/
Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx*ctx,
TABLE* altered_table,
const TABLE* old_table,
bool statistics_exist,
trx_t* trx,
const char* table_name)
{
DBUG_ENTER("commit_try_norebuild");
DBUG_ASSERT(!ctx->need_rebuild());
DBUG_ASSERT(trx->dict_operation_lock_mode);
DBUG_ASSERT(!(ha_alter_info->handler_flags
& ALTER_DROP_FOREIGN_KEY)
|| ctx->num_to_drop_fk > 0);
DBUG_ASSERT(ctx->num_to_drop_fk
<= ha_alter_info->alter_info->drop_list.elements
|| ctx->num_to_drop_vcol
== ha_alter_info->alter_info->drop_list.elements);
if (ctx->page_compression_level
&& innobase_page_compression_try(ctx->page_compression_level,
ctx->new_table, trx,
table_name)) {
DBUG_RETURN(true);
}
for (ulint i = 0; i < ctx->num_to_add_index; i++) {
dict_index_t* index = ctx->add_index[i];
DBUG_ASSERT(dict_index_get_online_status(index)
== ONLINE_INDEX_COMPLETE);
DBUG_ASSERT(!index->is_committed());
if (index->is_corrupted()) {
/* Report a duplicate key
error for the index that was
flagged corrupted, most likely
because a duplicate value was
inserted (directly or by
rollback) after
ha_innobase::inplace_alter_table()
completed.
TODO: report this as a corruption
with a detailed reason once
WL#6379 has been implemented. */
my_error(ER_DUP_UNKNOWN_IN_INDEX,
MYF(0), index->name());
DBUG_RETURN(true);
}
}
if (innobase_update_foreign_try(ctx, trx, table_name)) {
DBUG_RETURN(true);
}
if ((ha_alter_info->handler_flags & ALTER_COLUMN_UNVERSIONED)
&& vers_change_fields_try(ha_alter_info, ctx, trx, old_table)) {
DBUG_RETURN(true);
}
dberr_t error = DB_SUCCESS;
dict_index_t* index;
const char *op = "rename index to add";
ulint num_fts_index = 0;
const bool statistics_drop = statistics_exist
&& ((HA_OPTION_NO_STATS_PERSISTENT |
HA_OPTION_STATS_PERSISTENT)
& (old_table->s->db_create_options
^ altered_table->s->db_create_options))
&& ((altered_table->s->db_create_options
& HA_OPTION_NO_STATS_PERSISTENT)
|| (!(altered_table->s->db_create_options
& HA_OPTION_STATS_PERSISTENT)
&& !srv_stats_persistent));
/* We altered the table in place. Mark the indexes as committed. */
for (ulint i = 0; i < ctx->num_to_add_index; i++) {
index = ctx->add_index[i];
DBUG_ASSERT(dict_index_get_online_status(index)
== ONLINE_INDEX_COMPLETE);
DBUG_ASSERT(!index->is_committed());
error = row_merge_rename_index_to_add(
trx, ctx->new_table->id, index->id);
if (error) {
goto handle_error;
}
}
for (dict_index_t *index = UT_LIST_GET_FIRST(ctx->old_table->indexes);
index; index = UT_LIST_GET_NEXT(indexes, index)) {
if (index->type & DICT_FTS) {
num_fts_index++;
}
}
char db[MAX_DB_UTF8_LEN], table[MAX_TABLE_UTF8_LEN];
if (statistics_exist && (statistics_drop || ctx->num_to_drop_index)) {
dict_fs2utf8(ctx->old_table->name.m_name,
db, sizeof db, table, sizeof table);
}
for (ulint i = 0; i < ctx->num_to_drop_index; i++) {
index = ctx->drop_index[i];
DBUG_ASSERT(index->is_committed());
DBUG_ASSERT(index->table == ctx->new_table);
DBUG_ASSERT(index->to_be_dropped);
op = "DROP INDEX";
static const char drop_index[] =
"PROCEDURE DROP_INDEX_PROC () IS\n"
"BEGIN\n"
"DELETE FROM SYS_FIELDS WHERE INDEX_ID=:indexid;\n"
"DELETE FROM SYS_INDEXES WHERE ID=:indexid;\n"
"END;\n";
pars_info_t* info = pars_info_create();
pars_info_add_ull_literal(info, "indexid", index->id);
error = que_eval_sql(info, drop_index, trx);
if (error == DB_SUCCESS && index->type & DICT_FTS) {
DBUG_ASSERT(index->table->fts);
DEBUG_SYNC_C("norebuild_fts_drop");
error = fts_drop_index(index->table, index, trx);
ut_ad(num_fts_index);
num_fts_index--;
}
if (error != DB_SUCCESS) {
goto handle_error;
}
if (!statistics_exist || statistics_drop) {
continue;
}
error = dict_stats_delete_from_index_stats(db, table,
index->name, trx);
switch (error) {
case DB_SUCCESS:
case DB_STATS_DO_NOT_EXIST:
continue;
default:
goto handle_error;
}
}
if (!statistics_exist) {
} else if (statistics_drop) {
error = dict_stats_delete_from_table_stats(db, table, trx);
switch (error) {
case DB_SUCCESS:
case DB_STATS_DO_NOT_EXIST:
break;
default:
goto handle_error;
}
error = dict_stats_delete_from_index_stats(db, table, trx);
switch (error) {
case DB_STATS_DO_NOT_EXIST:
error = DB_SUCCESS;
/* fall through */
case DB_SUCCESS:
break;
default:
goto handle_error;
}
} else if (const size_t size = ha_alter_info->rename_keys.size()) {
char tmp_name[5];
char db[MAX_DB_UTF8_LEN], table[MAX_TABLE_UTF8_LEN];
dict_fs2utf8(ctx->new_table->name.m_name, db, sizeof db,
table, sizeof table);
tmp_name[0]= (char)0xff;
for (size_t i = 0; error == DB_SUCCESS && i < size; i++) {
snprintf(tmp_name+1, sizeof(tmp_name)-1, "%zu", i);
error = dict_stats_rename_index(db, table,
ha_alter_info->
rename_keys[i].
old_key->name.str,
tmp_name, trx);
}
for (size_t i = 0; error == DB_SUCCESS && i < size; i++) {
snprintf(tmp_name+1, sizeof(tmp_name)-1, "%zu", i);
error = dict_stats_rename_index(db, table, tmp_name,
ha_alter_info
->rename_keys[i].
new_key->name.str,
trx);
}
switch (error) {
case DB_SUCCESS:
case DB_STATS_DO_NOT_EXIST:
break;
case DB_DUPLICATE_KEY:
my_error(ER_DUP_KEY, MYF(0),
"mysql.innodb_index_stats");
DBUG_RETURN(true);
default:
goto handle_error;
}
}
if ((ctx->old_table->flags2 & DICT_TF2_FTS) && !num_fts_index) {
error = fts_drop_tables(trx, *ctx->old_table);
if (error != DB_SUCCESS) {
handle_error:
switch (error) {
case DB_TOO_MANY_CONCURRENT_TRXS:
my_error(ER_TOO_MANY_CONCURRENT_TRXS, MYF(0));
break;
case DB_LOCK_WAIT_TIMEOUT:
my_error(ER_LOCK_WAIT_TIMEOUT, MYF(0));
break;
default:
sql_print_error("InnoDB: %s: %s\n", op,
ut_strerr(error));
DBUG_ASSERT(error == DB_IO_ERROR
|| error == DB_LOCK_TABLE_FULL
|| error == DB_DECRYPTION_FAILED
|| error == DB_PAGE_CORRUPTED
|| error == DB_CORRUPTION);
my_error(ER_INTERNAL_ERROR, MYF(0), op);
}
DBUG_RETURN(true);
}
}
if (innobase_rename_or_enlarge_columns_try(ha_alter_info, ctx,
altered_table, old_table,
trx, table_name)) {
DBUG_RETURN(true);
}
if ((ha_alter_info->handler_flags & ALTER_RENAME_INDEX)
&& rename_indexes_try(ctx, ha_alter_info, trx)) {
DBUG_RETURN(true);
}
if (ctx->is_instant()) {
DBUG_RETURN(innobase_instant_try(ha_alter_info, ctx,
altered_table, old_table,
trx));
}
if (ha_alter_info->handler_flags
& (ALTER_DROP_VIRTUAL_COLUMN | ALTER_ADD_VIRTUAL_COLUMN)) {
if ((ha_alter_info->handler_flags & ALTER_DROP_VIRTUAL_COLUMN)
&& innobase_drop_virtual_try(ha_alter_info, ctx->old_table,
trx)) {
DBUG_RETURN(true);
}
if ((ha_alter_info->handler_flags & ALTER_ADD_VIRTUAL_COLUMN)
&& innobase_add_virtual_try(ha_alter_info, ctx->old_table,
trx)) {
DBUG_RETURN(true);
}
unsigned n_col = ctx->old_table->n_cols
- DATA_N_SYS_COLS;
unsigned n_v_col = ctx->old_table->n_v_cols
+ ctx->num_to_add_vcol - ctx->num_to_drop_vcol;
if (innodb_update_cols(
ctx->old_table,
dict_table_encode_n_col(n_col, n_v_col)
| unsigned(ctx->old_table->flags & DICT_TF_COMPACT)
<< 31, trx)) {
DBUG_RETURN(true);
}
}
DBUG_RETURN(false);
}
/** Commit the changes to the data dictionary cache
after a successful commit_try_norebuild() call.
@param ha_alter_info algorithm=inplace context
@param ctx In-place ALTER TABLE context for the current partition
@param altered_table the TABLE after the ALTER
@param table the TABLE before the ALTER
@param trx Data dictionary transaction
(will be started and committed, for DROP INDEX)
@return whether all replacements were found for dropped indexes */
inline MY_ATTRIBUTE((nonnull))
bool
commit_cache_norebuild(
/*===================*/
Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx*ctx,
const TABLE* altered_table,
const TABLE* table,
trx_t* trx)
{
DBUG_ENTER("commit_cache_norebuild");
DBUG_ASSERT(!ctx->need_rebuild());
DBUG_ASSERT(ctx->new_table->space != fil_system.temp_space);
DBUG_ASSERT(!ctx->new_table->is_temporary());
bool found = true;
if (ctx->page_compression_level) {
DBUG_ASSERT(ctx->new_table->space != fil_system.sys_space);
#if defined __GNUC__ && !defined __clang__ && __GNUC__ < 6
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wconversion" /* GCC 4 and 5 need this here */
#endif
ctx->new_table->flags
= static_cast<uint16_t>(
(ctx->new_table->flags
& ~(0xFU
<< DICT_TF_POS_PAGE_COMPRESSION_LEVEL))
| 1 << DICT_TF_POS_PAGE_COMPRESSION
| (ctx->page_compression_level & 0xF)
<< DICT_TF_POS_PAGE_COMPRESSION_LEVEL)
& ((1U << DICT_TF_BITS) - 1);
#if defined __GNUC__ && !defined __clang__ && __GNUC__ < 6
# pragma GCC diagnostic pop
#endif
if (fil_space_t* space = ctx->new_table->space) {
bool update = !(space->flags
& FSP_FLAGS_MASK_PAGE_COMPRESSION);
mysql_mutex_lock(&fil_system.mutex);
space->flags &= ~FSP_FLAGS_MASK_MEM_COMPRESSION_LEVEL;
space->flags |= ctx->page_compression_level
<< FSP_FLAGS_MEM_COMPRESSION_LEVEL;
if (!space->full_crc32()) {
space->flags
|= FSP_FLAGS_MASK_PAGE_COMPRESSION;
} else if (!space->is_compressed()) {
space->flags |= static_cast<uint32_t>(
innodb_compression_algorithm)
<< FSP_FLAGS_FCRC32_POS_COMPRESSED_ALGO;
}
mysql_mutex_unlock(&fil_system.mutex);
if (update) {
/* Maybe we should introduce an undo
log record for updating tablespace
flags, and perform the update already
in innobase_page_compression_try().
If the server is killed before the
following mini-transaction commit
becomes durable, fsp_flags_try_adjust()
will perform the equivalent adjustment
and warn "adjusting FSP_SPACE_FLAGS". */
mtr_t mtr;
mtr.start();
if (buf_block_t* b = buf_page_get(
page_id_t(space->id, 0),
space->zip_size(),
RW_X_LATCH, &mtr)) {
byte* f = FSP_HEADER_OFFSET
+ FSP_SPACE_FLAGS
+ b->page.frame;
const auto sf = space->flags
& ~FSP_FLAGS_MEM_MASK;
if (mach_read_from_4(f) != sf) {
mtr.set_named_space(space);
mtr.write<4,mtr_t::FORCED>(
*b, f, sf);
}
}
mtr.commit();
}
}
}
col_set drop_list;
col_set v_drop_list;
/* Check if the column, part of an index to be dropped is part of any
other index which is not being dropped. If it so, then set the ord_part
of the column to 0. */
collect_columns_from_dropped_indexes(ctx, drop_list, v_drop_list);
for (ulint col : drop_list) {
if (!check_col_exists_in_indexes(ctx->new_table, col, false)) {
ctx->new_table->cols[col].ord_part = 0;
}
}
for (ulint col : v_drop_list) {
if (!check_col_exists_in_indexes(ctx->new_table, col, true)) {
ctx->new_table->v_cols[col].m_col.ord_part = 0;
}
}
for (ulint i = 0; i < ctx->num_to_add_index; i++) {
dict_index_t* index = ctx->add_index[i];
DBUG_ASSERT(dict_index_get_online_status(index)
== ONLINE_INDEX_COMPLETE);
DBUG_ASSERT(!index->is_committed());
index->change_col_info = nullptr;
index->set_committed(true);
}
for (ulint i = 0; i < ctx->num_to_drop_index; i++) {
dict_index_t* index = ctx->drop_index[i];
DBUG_ASSERT(index->is_committed());
DBUG_ASSERT(index->table == ctx->new_table);
DBUG_ASSERT(index->to_be_dropped);
if (!dict_foreign_replace_index(index->table, ctx->col_names,
index)) {
found = false;
}
dict_index_remove_from_cache(index->table, index);
}
if (ctx->num_to_add_index) {
for (dict_foreign_t* foreign: ctx->new_table->foreign_set) {
if (foreign->foreign_table == ctx->new_table
&& !foreign->foreign_index) {
foreign->foreign_index =
dict_foreign_find_index(
foreign->foreign_table,
nullptr,
foreign->foreign_col_names,
foreign->n_fields, nullptr,
/*check_charsets=*/TRUE,
/*check_null=*/FALSE,
nullptr, nullptr, nullptr);
}
}
for (dict_foreign_t* foreign: ctx->new_table->referenced_set) {
if (foreign->referenced_table == ctx->new_table
&& !foreign->referenced_index) {
foreign->referenced_index =
dict_foreign_find_index(
foreign->referenced_table,
nullptr,
foreign->referenced_col_names,
foreign->n_fields, nullptr,
/*check_charsets=*/TRUE,
/*check_null=*/FALSE,
nullptr, nullptr, nullptr);
}
}
}
fts_clear_all(ctx->old_table);
if (!ctx->is_instant()) {
innobase_rename_or_enlarge_columns_cache(
ha_alter_info, altered_table, table, ctx->new_table);
} else {
ut_ad(ctx->col_map);
if (fts_t* fts = ctx->new_table->fts) {
ut_ad(fts->doc_col != ULINT_UNDEFINED);
ut_ad(ctx->new_table->n_cols > DATA_N_SYS_COLS);
const ulint c = ctx->col_map[fts->doc_col];
ut_ad(c < ulint(ctx->new_table->n_cols)
- DATA_N_SYS_COLS);
ut_d(const dict_col_t& col = ctx->new_table->cols[c]);
ut_ad(!col.is_nullable());
ut_ad(!col.is_virtual());
ut_ad(!col.is_added());
ut_ad(col.prtype & DATA_UNSIGNED);
ut_ad(col.mtype == DATA_INT);
ut_ad(col.len == 8);
ut_ad(col.ord_part);
fts->doc_col = c;
}
if (ha_alter_info->handler_flags & ALTER_DROP_STORED_COLUMN) {
const dict_index_t* index = ctx->new_table->indexes.start;
for (const dict_field_t* f = index->fields,
* const end = f + index->n_fields;
f != end; f++) {
dict_col_t& c = *f->col;
if (c.is_dropped()) {
c.set_dropped(!c.is_nullable(),
DATA_LARGE_MTYPE(c.mtype)
|| (!f->fixed_len
&& c.len > 255),
f->fixed_len);
}
}
}
if (!ctx->instant_table->persistent_autoinc) {
ctx->new_table->persistent_autoinc = 0;
}
}
if (ha_alter_info->handler_flags & ALTER_COLUMN_UNVERSIONED) {
vers_change_fields_cache(ha_alter_info, ctx, table);
}
if (ha_alter_info->handler_flags & ALTER_RENAME_INDEX) {
innobase_rename_indexes_cache(ctx, ha_alter_info);
}
ctx->new_table->fts_doc_id_index
= ctx->new_table->fts
? dict_table_get_index_on_name(
ctx->new_table, FTS_DOC_ID_INDEX_NAME)
: NULL;
DBUG_ASSERT((ctx->new_table->fts == NULL)
== (ctx->new_table->fts_doc_id_index == NULL));
if (table->found_next_number_field
&& !altered_table->found_next_number_field) {
ctx->prebuilt->table->persistent_autoinc = 0;
}
DBUG_RETURN(found);
}
/** Adjust the persistent statistics after non-rebuilding ALTER TABLE.
Remove statistics for dropped indexes, add statistics for created indexes
and rename statistics for renamed indexes.
@param ha_alter_info Data used during in-place alter
@param ctx In-place ALTER TABLE context
@param thd MySQL connection
*/
static
void
alter_stats_norebuild(
/*==================*/
Alter_inplace_info* ha_alter_info,
ha_innobase_inplace_ctx* ctx,
THD* thd)
{
DBUG_ENTER("alter_stats_norebuild");
DBUG_ASSERT(!ctx->need_rebuild());
auto stat = ctx->new_table->stat;
if (!dict_table_t::stat_initialized(stat)
|| !dict_table_t::stats_is_persistent(stat)) {
DBUG_VOID_RETURN;
}
for (ulint i = 0; i < ctx->num_to_add_index; i++) {
dict_index_t* index = ctx->add_index[i];
DBUG_ASSERT(index->table == ctx->new_table);
if (!(index->type & DICT_FTS)) {
dict_stats_update_for_index(index);
}
}
DBUG_VOID_RETURN;
}
/** Adjust the persistent statistics after rebuilding ALTER TABLE.
Remove statistics for dropped indexes, add statistics for created indexes
and rename statistics for renamed indexes.
@param table InnoDB table that was rebuilt by ALTER TABLE
@param table_name Table name in MySQL
@param thd MySQL connection
*/
static
void
alter_stats_rebuild(
/*================*/
dict_table_t* table,
const char* table_name,
THD* thd)
{
DBUG_ENTER("alter_stats_rebuild");
if (!table->space || !table->stats_is_persistent()
|| dict_stats_persistent_storage_check(false) != SCHEMA_OK) {
DBUG_VOID_RETURN;
}
dberr_t ret = dict_stats_update_persistent(table);
if (ret == DB_SUCCESS) {
ret = dict_stats_save(table);
}
if (ret != DB_SUCCESS) {
push_warning_printf(
thd,
Sql_condition::WARN_LEVEL_WARN,
ER_ALTER_INFO,
"Error updating stats for table '%s'"
" after table rebuild: %s",
table_name, ut_strerr(ret));
}
DBUG_VOID_RETURN;
}
/** Apply the log for the table rebuild operation.
@param[in] ctx Inplace Alter table context
@param[in] altered_table MySQL table that is being altered
@return true Failure, else false. */
static bool alter_rebuild_apply_log(
ha_innobase_inplace_ctx* ctx,
Alter_inplace_info* ha_alter_info,
TABLE* altered_table)
{
DBUG_ENTER("alter_rebuild_apply_log");
if (!ctx->online) {
DBUG_RETURN(false);
}
/* We copied the table. Any indexes that were requested to be
dropped were not created in the copy of the table. Apply any
last bit of the rebuild log and then rename the tables. */
dict_table_t* user_table = ctx->old_table;
DEBUG_SYNC_C("row_log_table_apply2_before");
dict_vcol_templ_t* s_templ = NULL;
if (ctx->new_table->n_v_cols > 0) {
s_templ = UT_NEW_NOKEY(
dict_vcol_templ_t());
ctx->new_table->lock_mutex_lock();
innobase_build_v_templ(altered_table, ctx->new_table, s_templ);
ctx->new_table->vc_templ = s_templ;
ctx->new_table->lock_mutex_unlock();
}
dberr_t error = row_log_table_apply(
ctx->thr, user_table, altered_table,
static_cast<ha_innobase_inplace_ctx*>(
ha_alter_info->handler_ctx)->m_stage,
ctx->new_table);
if (s_templ) {
ut_ad(ctx->need_rebuild());
dict_free_vc_templ(s_templ);
UT_DELETE(s_templ);
ctx->new_table->vc_templ = NULL;
}
DBUG_RETURN(ctx->log_failure(
ha_alter_info, altered_table, error));
}
/** Commit or rollback the changes made during
prepare_inplace_alter_table() and inplace_alter_table() inside
the storage engine. Note that the allowed level of concurrency
during this operation will be the same as for
inplace_alter_table() and thus might be higher than during
prepare_inplace_alter_table(). (E.g concurrent writes were
blocked during prepare, but might not be during commit).
@param altered_table TABLE object for new version of table.
@param ha_alter_info Structure describing changes to be done
by ALTER TABLE and holding data used during in-place alter.
@param commit true => Commit, false => Rollback.
@retval true Failure
@retval false Success
*/
bool
ha_innobase::commit_inplace_alter_table(
/*====================================*/
TABLE* altered_table,
Alter_inplace_info* ha_alter_info,
bool commit)
{
ha_innobase_inplace_ctx*ctx0;
ctx0 = static_cast<ha_innobase_inplace_ctx*>
(ha_alter_info->handler_ctx);
#ifndef DBUG_OFF
uint failure_inject_count = 1;
#endif /* DBUG_OFF */
DBUG_ENTER("commit_inplace_alter_table");
DBUG_ASSERT(!srv_read_only_mode);
DBUG_ASSERT(!ctx0 || ctx0->prebuilt == m_prebuilt);
DBUG_ASSERT(!ctx0 || ctx0->old_table == m_prebuilt->table);
DEBUG_SYNC_C("innodb_commit_inplace_alter_table_enter");
DEBUG_SYNC_C("innodb_commit_inplace_alter_table_wait");
if (ctx0 != NULL && ctx0->m_stage != NULL) {
ctx0->m_stage->begin_phase_end();
}
if (!commit) {
/* A rollback is being requested. So far we may at
most have created stubs for ADD INDEX or a copy of the
table for rebuild. */
#if 0 /* FIXME: is there a better way for innodb.innodb-index-online? */
lock_shared_ha_data();
auto share = static_cast<InnoDB_share*>(get_ha_share_ptr());
set_ha_share_ptr(nullptr);
unlock_shared_ha_data();
delete share;
#endif
DBUG_RETURN(rollback_inplace_alter_table(
ha_alter_info, table, m_prebuilt));
}
if (!(ha_alter_info->handler_flags & ~INNOBASE_INPLACE_IGNORE)) {
DBUG_ASSERT(!ctx0);
MONITOR_ATOMIC_DEC(MONITOR_PENDING_ALTER_TABLE);
if (table->found_next_number_field
&& !altered_table->found_next_number_field) {
m_prebuilt->table->persistent_autoinc = 0;
/* Don't reset ha_alter_info->group_commit_ctx to make
partitions engine to call this function for all
partitions. */
}
else
ha_alter_info->group_commit_ctx = NULL;
DBUG_RETURN(false);
}
DBUG_ASSERT(ctx0);
inplace_alter_handler_ctx** ctx_array;
inplace_alter_handler_ctx* ctx_single[2];
if (ha_alter_info->group_commit_ctx) {
ctx_array = ha_alter_info->group_commit_ctx;
} else {
ctx_single[0] = ctx0;
ctx_single[1] = NULL;
ctx_array = ctx_single;
}
DBUG_ASSERT(ctx0 == ctx_array[0]);
ut_ad(m_prebuilt->table == ctx0->old_table);
ha_alter_info->group_commit_ctx = NULL;
const bool new_clustered = ctx0->need_rebuild();
trx_t* const trx = ctx0->trx;
trx->op_info = "acquiring table lock";
bool fts_exist = false;
for (inplace_alter_handler_ctx** pctx = ctx_array; *pctx; pctx++) {
auto ctx = static_cast<ha_innobase_inplace_ctx*>(*pctx);
DBUG_ASSERT(ctx->prebuilt->trx == m_prebuilt->trx);
ut_ad(m_prebuilt != ctx->prebuilt || ctx == ctx0);
DBUG_ASSERT(new_clustered == ctx->need_rebuild());
/* If decryption failed for old table or new table
fail here. */
if ((!ctx->old_table->is_readable()
&& ctx->old_table->space)
|| (!ctx->new_table->is_readable()
&& ctx->new_table->space)) {
String str;
const char* engine= table_type();
get_error_message(HA_ERR_DECRYPTION_FAILED, &str);
my_error(ER_GET_ERRMSG, MYF(0), HA_ERR_DECRYPTION_FAILED, str.c_ptr(), engine);
DBUG_RETURN(true);
}
if ((ctx->old_table->flags2 | ctx->new_table->flags2)
& (DICT_TF2_FTS_HAS_DOC_ID | DICT_TF2_FTS)) {
fts_exist = true;
}
}
bool already_stopped= false;
for (inplace_alter_handler_ctx** pctx = ctx_array; *pctx; pctx++) {
auto ctx = static_cast<ha_innobase_inplace_ctx*>(*pctx);
dberr_t error = DB_SUCCESS;
if (fts_exist) {
purge_sys.stop_FTS(*ctx->old_table, already_stopped);
already_stopped = true;
}
if (new_clustered && ctx->old_table->fts) {
ut_ad(!ctx->old_table->fts->add_wq);
fts_optimize_remove_table(ctx->old_table);
}
error = lock_table_children(ctx->old_table, trx);
if (ctx->new_table->fts) {
ut_ad(!ctx->new_table->fts->add_wq);
fts_optimize_remove_table(ctx->new_table);
fts_sync_during_ddl(ctx->new_table);
}
/* Exclusively lock the table, to ensure that no other
transaction is holding locks on the table while we
change the table definition. Any recovered incomplete
transactions would be holding InnoDB locks only, not MDL. */
if (error == DB_SUCCESS) {
error = lock_table_for_trx(ctx->new_table, trx,
LOCK_X);
}
DBUG_EXECUTE_IF("deadlock_table_fail",
{
error= DB_DEADLOCK;
trx_rollback_for_mysql(trx);
});
if (error != DB_SUCCESS) {
lock_fail:
my_error_innodb(
error, table_share->table_name.str, 0);
if (fts_exist) {
purge_sys.resume_FTS();
}
/* Deadlock encountered and rollbacked the
transaction. So restart the transaction
to remove the newly created table or
index from data dictionary and table cache
in rollback_inplace_alter_table() */
if (!trx->is_started()) {
trx_start_for_ddl(trx);
}
DBUG_RETURN(true);
} else if ((ctx->new_table->flags2
& (DICT_TF2_FTS_HAS_DOC_ID | DICT_TF2_FTS))
&& (error = fts_lock_tables(trx, *ctx->new_table))
!= DB_SUCCESS) {
goto lock_fail;
} else if (!new_clustered) {
} else if ((error = lock_table_for_trx(ctx->old_table, trx,
LOCK_X))
!= DB_SUCCESS) {
goto lock_fail;
} else if ((ctx->old_table->flags2
& (DICT_TF2_FTS_HAS_DOC_ID | DICT_TF2_FTS))
&& (error = fts_lock_tables(trx, *ctx->old_table))
!= DB_SUCCESS) {
goto lock_fail;
}
}
DEBUG_SYNC(m_user_thd, "innodb_alter_commit_after_lock_table");
if (new_clustered) {
/* We are holding MDL_EXCLUSIVE as well as exclusive
InnoDB table locks. Let us apply any table rebuild log
before locking dict_sys. */
for (inplace_alter_handler_ctx** pctx= ctx_array; *pctx;
pctx++) {
auto ctx= static_cast<ha_innobase_inplace_ctx*>(*pctx);
DBUG_ASSERT(ctx->need_rebuild());
if (alter_rebuild_apply_log(ctx, ha_alter_info,
altered_table)) {
if (fts_exist) {
purge_sys.resume_FTS();
}
DBUG_RETURN(true);
}
}
} else {
dberr_t error= DB_SUCCESS;
for (inplace_alter_handler_ctx** pctx= ctx_array; *pctx;
pctx++) {
auto ctx= static_cast<ha_innobase_inplace_ctx*>(*pctx);
if (!ctx->online || !ctx->old_table->space
|| !ctx->old_table->is_readable()) {
continue;
}
for (ulint i = 0; i < ctx->num_to_add_index; i++) {
dict_index_t *index= ctx->add_index[i];
ut_ad(!(index->type &
(DICT_FTS | DICT_SPATIAL)));
index->lock.x_lock(SRW_LOCK_CALL);
if (!index->online_log) {
/* online log would've cleared
when we detect the error in
other index */
index->lock.x_unlock();
continue;
}
if (index->is_corrupted()) {
/* Online index log has been
preserved to show the error
when it happened via
row_log_apply() by DML thread */
error= row_log_get_error(index);
err_index:
ut_ad(error != DB_SUCCESS);
ctx->log_failure(
ha_alter_info,
altered_table, error);
row_log_free(index->online_log);
index->online_log= nullptr;
index->lock.x_unlock();
ctx->old_table->indexes.start
->online_log= nullptr;
if (fts_exist) {
purge_sys.resume_FTS();
}
MONITOR_ATOMIC_INC(
MONITOR_BACKGROUND_DROP_INDEX);
DBUG_RETURN(true);
}
index->lock.x_unlock();
error = row_log_apply(
m_prebuilt->trx, index, altered_table,
ctx->m_stage);
index->lock.x_lock(SRW_LOCK_CALL);
if (error != DB_SUCCESS) {
goto err_index;
}
row_log_free(index->online_log);
index->online_log= nullptr;
index->lock.x_unlock();
}
ctx->old_table->indexes.start->online_log= nullptr;
}
}
dict_stats stats;
bool stats_failed = true;
dberr_t error = DB_SUCCESS;
if (!ctx0->old_table->is_stats_table() &&
!ctx0->new_table->is_stats_table()) {
stats_failed = stats.open(m_user_thd);
if (!stats_failed
&& !(error = lock_table_for_trx(stats.table(),
trx, LOCK_X))) {
error = lock_table_for_trx(stats.index(), trx, LOCK_X);
}
}
DEBUG_SYNC(m_user_thd, "innodb_commit_inplace_before_lock");
DBUG_EXECUTE_IF("stats_lock_fail",
error = DB_LOCK_WAIT_TIMEOUT;
trx_rollback_for_mysql(trx););
if (error == DB_SUCCESS) {
error = lock_sys_tables(trx);
}
if (error != DB_SUCCESS) {
if (!stats_failed) {
stats.close();
}
if (fts_exist) {
purge_sys.resume_FTS();
}
if (!trx->is_started()) {
/* Transaction may have been rolled back
due to a lock wait timeout, deadlock,
or a KILL statement. So restart the
transaction to remove the newly created
table or index stubs from data dictionary
and table cache in
rollback_inplace_alter_table() */
trx_start_for_ddl(trx);
}
my_error_innodb(error, table_share->table_name.str, 0);
DBUG_RETURN(true);
}
row_mysql_lock_data_dictionary(trx);
/* Apply the changes to the data dictionary tables, for all
partitions. */
for (inplace_alter_handler_ctx** pctx = ctx_array; *pctx; pctx++) {
auto ctx = static_cast<ha_innobase_inplace_ctx*>(*pctx);
DBUG_ASSERT(new_clustered == ctx->need_rebuild());
if (ctx->need_rebuild() && !ctx->old_table->space) {
my_error(ER_TABLESPACE_DISCARDED, MYF(0),
table->s->table_name.str);
fail:
trx->rollback();
ut_ad(!trx->fts_trx);
row_mysql_unlock_data_dictionary(trx);
if (!stats_failed) {
stats.close();
}
if (fts_exist) {
purge_sys.resume_FTS();
}
trx_start_for_ddl(trx);
DBUG_RETURN(true);
}
if (commit_set_autoinc(ha_alter_info, ctx,
altered_table, table)) {
goto fail;
}
if (ctx->need_rebuild()) {
ctx->tmp_name = dict_mem_create_temporary_tablename(
ctx->heap, ctx->new_table->name.m_name,
ctx->new_table->id);
if (commit_try_rebuild(ha_alter_info, ctx,
altered_table, table,
!stats_failed,
trx,
table_share->table_name.str)) {
goto fail;
}
} else if (commit_try_norebuild(ha_alter_info, ctx,
altered_table, table,
!stats_failed,
trx,
table_share->table_name.str)) {
goto fail;
}
#ifndef DBUG_OFF
{
/* Generate a dynamic dbug text. */
char buf[32];
snprintf(buf, sizeof buf,
"ib_commit_inplace_fail_%u",
failure_inject_count++);
DBUG_EXECUTE_IF(buf,
my_error(ER_INTERNAL_ERROR, MYF(0),
"Injected error!");
goto fail;
);
}
#endif
}
/* Commit or roll back the changes to the data dictionary. */
DEBUG_SYNC(m_user_thd, "innodb_alter_inplace_before_commit");
if (new_clustered) {
ut_ad(trx->has_logged_persistent());
for (inplace_alter_handler_ctx** pctx = ctx_array; *pctx;
pctx++) {
auto ctx= static_cast<ha_innobase_inplace_ctx*>(*pctx);
ut_ad(!strcmp(ctx->old_table->name.m_name,
ctx->tmp_name));
ut_ad(ctx->new_table->get_ref_count() == 1);
const bool own = m_prebuilt == ctx->prebuilt;
trx_t* const user_trx = m_prebuilt->trx;
ctx->prebuilt->table->release();
ctx->prebuilt->table = nullptr;
row_prebuilt_free(ctx->prebuilt);
/* Rebuild the prebuilt object. */
ctx->prebuilt = row_create_prebuilt(
ctx->new_table, altered_table->s->reclength);
if (own) {
m_prebuilt = ctx->prebuilt;
}
trx_start_if_not_started(user_trx, true);
m_prebuilt->trx = user_trx;
}
}
ut_ad(!trx->fts_trx);
std::vector<pfs_os_file_t> deleted;
DBUG_EXECUTE_IF("innodb_alter_commit_crash_before_commit",
log_buffer_flush_to_disk(); DBUG_SUICIDE(););
/* The SQL layer recovery of ALTER TABLE will invoke
innodb_check_version() to know whether our trx->id, which we
reported via ha_innobase::table_version() after
ha_innobase::prepare_inplace_alter_table(), was committed.
If this trx was committed (the log write below completed),
we will be able to recover our trx->id to
dict_table_t::def_trx_id from the data dictionary tables.
For this logic to work, purge_sys.stop_SYS() and
purge_sys.resume_SYS() will ensure that the DB_TRX_ID that we
wrote to the SYS_ tables will be preserved until the SQL layer
has durably marked the ALTER TABLE operation as completed.
During recovery, the purge of InnoDB transaction history will
not start until innodb_ddl_recovery_done(). */
ha_alter_info->inplace_alter_table_committed = purge_sys.resume_SYS;
purge_sys.stop_SYS();
trx->commit(deleted);
/* At this point, the changes to the persistent storage have
been committed or rolled back. What remains to be done is to
update the in-memory structures, close some handles, release
temporary files, and (unless we rolled back) update persistent
statistics. */
for (inplace_alter_handler_ctx** pctx = ctx_array;
*pctx; pctx++) {
ha_innobase_inplace_ctx* ctx
= static_cast<ha_innobase_inplace_ctx*>(*pctx);
DBUG_ASSERT(ctx->need_rebuild() == new_clustered);
innobase_copy_frm_flags_from_table_share(
ctx->new_table, altered_table->s);
if (new_clustered) {
DBUG_PRINT("to_be_dropped",
("table: %s", ctx->old_table->name.m_name));
if (innobase_update_foreign_cache(ctx, m_user_thd)
!= DB_SUCCESS
&& m_prebuilt->trx->check_foreigns) {
foreign_fail:
push_warning_printf(
m_user_thd,
Sql_condition::WARN_LEVEL_WARN,
ER_ALTER_INFO,
"failed to load FOREIGN KEY"
" constraints");
}
} else {
bool fk_fail = innobase_update_foreign_cache(
ctx, m_user_thd) != DB_SUCCESS;
if (!commit_cache_norebuild(ha_alter_info, ctx,
altered_table, table,
trx)) {
fk_fail = true;
}
if (fk_fail && m_prebuilt->trx->check_foreigns) {
goto foreign_fail;
}
}
dict_mem_table_free_foreign_vcol_set(ctx->new_table);
dict_mem_table_fill_foreign_vcol_set(ctx->new_table);
}
ut_ad(trx == ctx0->trx);
ctx0->trx = nullptr;
/* Free the ctx->trx of other partitions, if any. We will only
use the ctx0->trx here. Others may have been allocated in
the prepare stage. */
for (inplace_alter_handler_ctx** pctx = &ctx_array[1]; *pctx;
pctx++) {
ha_innobase_inplace_ctx* ctx
= static_cast<ha_innobase_inplace_ctx*>(*pctx);
if (ctx->trx) {
ctx->trx->rollback();
ctx->trx->free();
ctx->trx = NULL;
}
}
/* MDEV-17468: Avoid this at least when ctx->is_instant().
Currently dict_load_column_low() is the only place where
num_base for virtual columns is assigned to nonzero. */
if (ctx0->num_to_drop_vcol || ctx0->num_to_add_vcol
|| (ctx0->new_table->n_v_cols && !new_clustered
&& (ha_alter_info->alter_info->drop_list.elements
|| ha_alter_info->alter_info->create_list.elements))
|| (ctx0->is_instant()
&& m_prebuilt->table->n_v_cols
&& ha_alter_info->handler_flags & ALTER_STORED_COLUMN_ORDER)
|| !ctx0->change_col_collate.empty()) {
DBUG_ASSERT(ctx0->old_table->get_ref_count() == 1);
ut_ad(ctx0->prebuilt == m_prebuilt);
for (inplace_alter_handler_ctx** pctx = ctx_array; *pctx;
pctx++) {
auto ctx= static_cast<ha_innobase_inplace_ctx*>(*pctx);
ctx->prebuilt->table = innobase_reload_table(
m_user_thd, ctx->prebuilt->table,
table->s->table_name, *ctx);
innobase_copy_frm_flags_from_table_share(
ctx->prebuilt->table, altered_table->s);
}
unlock_and_close_files(deleted, trx);
DBUG_EXECUTE_IF("innodb_alter_commit_crash_after_commit",
DBUG_SUICIDE(););
trx->free();
if (!stats_failed) {
stats.close();
}
if (fts_exist) {
purge_sys.resume_FTS();
}
MONITOR_ATOMIC_DEC(MONITOR_PENDING_ALTER_TABLE);
/* There is no need to reset dict_table_t::persistent_autoinc
as the table is reloaded */
DBUG_RETURN(false);
}
for (inplace_alter_handler_ctx** pctx = ctx_array;
*pctx; pctx++) {
ha_innobase_inplace_ctx* ctx
= static_cast<ha_innobase_inplace_ctx*>
(*pctx);
DBUG_ASSERT(ctx->need_rebuild() == new_clustered);
/* Publish the created fulltext index, if any.
Note that a fulltext index can be created without
creating the clustered index, if there already exists
a suitable FTS_DOC_ID column. If not, one will be
created, implying new_clustered */
for (ulint i = 0; i < ctx->num_to_add_index; i++) {
dict_index_t* index = ctx->add_index[i];
if (index->type & DICT_FTS) {
DBUG_ASSERT(index->type == DICT_FTS);
/* We reset DICT_TF2_FTS here because the bit
is left unset when a drop proceeds the add. */
DICT_TF2_FLAG_SET(ctx->new_table, DICT_TF2_FTS);
fts_add_index(index, ctx->new_table);
}
}
ut_d(dict_table_check_for_dup_indexes(
ctx->new_table, CHECK_ALL_COMPLETE));
/* Start/Restart the FTS background operations. */
if (ctx->new_table->fts) {
fts_optimize_add_table(ctx->new_table);
}
ut_d(dict_table_check_for_dup_indexes(
ctx->new_table, CHECK_ABORTED_OK));
#ifdef UNIV_DEBUG
if (!(ctx->new_table->fts != NULL
&& ctx->new_table->fts->cache->sync->in_progress)) {
ut_a(fts_check_cached_index(ctx->new_table));
}
#endif
}
unlock_and_close_files(deleted, trx);
DBUG_EXECUTE_IF("innodb_alter_commit_crash_after_commit",
DBUG_SUICIDE(););
trx->free();
if (!stats_failed) {
stats.close();
}
if (fts_exist) {
purge_sys.resume_FTS();
}
/* TODO: The following code could be executed
while allowing concurrent access to the table
(MDL downgrade). */
if (new_clustered) {
for (inplace_alter_handler_ctx** pctx = ctx_array;
*pctx; pctx++) {
ha_innobase_inplace_ctx* ctx
= static_cast<ha_innobase_inplace_ctx*>
(*pctx);
DBUG_ASSERT(ctx->need_rebuild());
alter_stats_rebuild(
ctx->new_table, table->s->table_name.str,
m_user_thd);
}
} else {
for (inplace_alter_handler_ctx** pctx = ctx_array;
*pctx; pctx++) {
ha_innobase_inplace_ctx* ctx
= static_cast<ha_innobase_inplace_ctx*>
(*pctx);
DBUG_ASSERT(!ctx->need_rebuild());
alter_stats_norebuild(ha_alter_info, ctx, m_user_thd);
}
}
innobase_parse_hint_from_comment(
m_user_thd, m_prebuilt->table, altered_table->s);
/* TODO: Also perform DROP TABLE and DROP INDEX after
the MDL downgrade. */
#ifndef DBUG_OFF
dict_index_t* clust_index = dict_table_get_first_index(
ctx0->prebuilt->table);
DBUG_ASSERT(!clust_index->online_log);
DBUG_ASSERT(dict_index_get_online_status(clust_index)
== ONLINE_INDEX_COMPLETE);
for (dict_index_t* index = clust_index;
index;
index = dict_table_get_next_index(index)) {
DBUG_ASSERT(!index->to_be_dropped);
}
#endif /* DBUG_OFF */
MONITOR_ATOMIC_DEC(MONITOR_PENDING_ALTER_TABLE);
DBUG_RETURN(false);
}
/**
@param thd the session
@param start_value the lower bound
@param max_value the upper bound (inclusive) */
ib_sequence_t::ib_sequence_t(
THD* thd,
ulonglong start_value,
ulonglong max_value)
:
m_max_value(max_value),
m_increment(0),
m_offset(0),
m_next_value(start_value),
m_eof(false)
{
if (thd != 0 && m_max_value > 0) {
thd_get_autoinc(thd, &m_offset, &m_increment);
if (m_increment > 1 || m_offset > 1) {
/* If there is an offset or increment specified
then we need to work out the exact next value. */
m_next_value = innobase_next_autoinc(
start_value, 1,
m_increment, m_offset, m_max_value);
} else if (start_value == 0) {
/* The next value can never be 0. */
m_next_value = 1;
}
} else {
m_eof = true;
}
}
/**
Postfix increment
@return the next value to insert */
ulonglong
ib_sequence_t::operator++(int) UNIV_NOTHROW
{
ulonglong current = m_next_value;
ut_ad(!m_eof);
ut_ad(m_max_value > 0);
m_next_value = innobase_next_autoinc(
current, 1, m_increment, m_offset, m_max_value);
if (m_next_value == m_max_value && current == m_next_value) {
m_eof = true;
}
return(current);
}
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