Fix Bug#34300 Tinyblob & tinytext fields currupted after export/import and alter in 5.1
Copy the BLOB fields, that are stored internally, to a safe place
(prebuilt->blob_heap) when converting a row from InnoDB format to
MySQL format in row_sel_store_mysql_rec().
The bug was introduced in:
------------------------------------------------------------------------
r587 | osku | 2006-05-23 15:35:58 +0300 (Tue, 23 May 2006) | 3 lines
Optimize BLOB selects by using prebuilt->blob_heap directly instead of first
reading BLOB data to a temporary heap and then copying it to
prebuilt->blob_heap.
------------------------------------------------------------------------
Approved by: Heikki
new typedef to univ.i (ib_ulonglong). Added checks for overflow and removed
the assertion where it crashed previously, since the type has now changed
to unsigned, it doesn't make sense to check for < 0. Added new tests, to
check for overflow, for the different INT types supported for both
signed and unsigned.
Fixes Bug# 34335
Fix Bug#34053:
* In CREATE TABLE and DROP TABLE check whether the table in question is one
of the magic innodb_monitor tables and whether the user has enough rights
to mess with it before doing anything else.
* Implement a mysql-test testcase.
Approved by: Heikki
Merge r2160 from trunk/:
Fix Bug#18942 by dropping all foreign key constraints at the end of
DROP DATABASE. Usually, by then, there are no foreign constraints
left because all of them are dropped when the relevant tables are
dropped. This code is to ensure that any orphaned FKs are wiped too.
autoincrement columns can't contain negative values. With the fix, the
autoincrement table counter is set to 0 if the maximum value read from
the autoinc column index is negative.
Add test for the bug fix but the test is not really useful as the server
needs to be restarted half way through the test. It has been added for
reference only.
innodb-semi-consistent: New tests for InnoDB semi-consistent reads.
Unfortunately, these will not trigger Bug #31494, because there merely
occur lock wait timeouts, not deadlocks.
Bug# 30907: We don't rely on *first_value to be 0 when checking whether
get_auto_increment() has been invoked for the first time in a multi-row
INSERT. We instead use trx_t::n_autoinc_rows. Initialize trx::n_autoinc_rows
inside ha_innobase::start_stmt() too.
Bug# 30888: While adding code for the low level read of the AUTOINC value
from the index, the case for MEDIUM ints which are 3 bytes was missed
triggering an assertion.
when building a previous version of the row. This bug is triggered when
running queries via InnoDB's internal SQL parser; when InnoDB's optimizer
selects a secondary index for the plan.
dict_table_remove_from_cache(table) and thus freeing the memory
allocated for the table, copy the table name. This avoids reading
freed memory when name == table->name.
Approved by Sunny.
is one test that fails as of this commit. The updated test case should be
part of the snapshot from MySQL shortly.
Fix for bug# 27950 - Init AUTOINC from delete_row().
Fix for bug# 28781 - Use value specified by MySQL, in update_row().
Summary of structural changes:
==============================
InnoDB needs to hold a table level lock for AUTOINC allocations to overcome
the non-determinism inherent in MySQL SBR for INSERT ... SELECT. In this fix
for simple INSERT statements (including multi-value inserts), we try and avoid
acquiring the special AUTOINC table level lock unless another transaction has
already reserved the AUTOINC table level lock, in which case we fall back
to the old behavior of acquiring the AUTOINC table level lock.
The max AUTOINC value is now read directly using the low level interface
of InnoDB.
When creating an index containing a too long record, InnoDB would
dereference a NULL pointer when trying to determine the maximum row length.
innodb_check_for_record_too_big_error(): Replace the dict_table_t*
parameter with a Boolean flag. There is not always a dict_table_t object
when this function is called.
page_get_free_space_of_empty_noninline(): Move the definition and
declaration from row0mysql (!) to page0page. Make the signature
identical with page_get_free_space_of_empty().
create_clustered_index_when_no_primary(): Add the parameter "comp".
Remove unnecessary casts.
In reality, the patch breaks the handling of prefix indexes of
variable-length columns in ROW_FORMAT=COMPACT. Reverting the patch
is only a partial fix of Bug #28138.
and adapt some things.
Note that ha_innodb.cc depends on mysql_tmpfile() being declared in
<mysql/plugin.h>. Until the function is declared there, you can
uncomment the buggy definition of mysql_tmpfile in ha_innodb.cc.
Remove storage/innobase/*/Makefile.am. The whole compilation is driven by
storage/innobase/Makefile.am and storage/innobase/plug.in.
plug.in: Declare InnoDB as a dynamic plugin.
ha_innodb.h: Remove the declarations of many global variables. The variables
are no longer directly referenced outside of storage/innobase.
trx_t: Add the field trx->duplicates.
trx_create(): Initialize the fields trx->active_trans and trx->duplicates.
innobase_query_is_update(): Remove. Consult trx->duplicates instead.
row_ins_check_foreign_constraint(), row_ins_scan_sec_index_for_duplicate():
Make use of the predicates page_rec_is_infimum() and page_rec_is_supremum().
of UNDO slots in the rollback segment. This is a partial fix since the
MySQL error code requested to properly report the error condition back
to the client has not yet materialized. Currently we have #ifdef'd the
error code translation in ha_innodb.cc. This will have to be changed
as and when MySQl add the new requested code or an equivalent code
that we can then use.
Given the above, currently we will get the old behaviour, not the "fixed"
and intended behaviour.
ChangeSet@1.2372, 2006-12-31 02:29:11+01:00, kent@mysql.com +79 -0
Many files:
Removed "MySQL Finland AB & TCX DataKonsult AB" from copyright header
Adjusted year(s) in copyright header
Added GPL copyright text
dict_truncate_index_tree(): Replace parameter rec_t* rec with
btr_pcur_t* pcur. Reposition pcur before calling btr_create().
sync_thread_add_level(): Remove the relaxation of the assertion added in r968.
bug would only surface if the InnoDB SQL interpreter were used for
updating fixed-length columns. Currently (as the UPD_NODE_NO_SIZE_CHANGE
flag is never set), cmpl_info can only be 0 or UPD_NODE_NO_ORD_CHANGE.
Luckily, UPD_NODE_NO_ORD_CHANGE is 1, and the condition was simplified
to !cmpl_info.
so that all integer fields can be packed into 64 bits. (Bug #20877)
dtype_t: Change the type of all bit-fields to unsigned.
dict_table_get_nth_col(), dict_table_get_sys_col_noninline(),
dict_table_get_sys_col(), dict_field_get_col(): Return const
dict_col_t*, so that changes to dict_col_t can be detected more
easily. Add const to many dict_col_t* declarations.
dict_index_get_nth_type(): Replace with dict_index_get_nth_col().
dict_col_get_type(): Replace with dict_col_copy_type().
dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(),
dict_col_get_sql_null_size(): New functions.
dtype_get_at_most_n_mbchars(): Replace the parameter dtype
with the parameters prtype, mbminlen, mbmaxlen.
dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(),
cmp_whole_field(): Replace the dtype_t* parameter with the ulint
parameters mtype, prtype.
dtype_copy(): Add a const qualifier to type2 (the one being copied from).
dtype_set_mblen(): Replaced with dtype_get_mblen().
dtype_get_fixed_size_low(), dtype_get_min_size_low(),
dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(),
dtype_get_min_size(), and dtype_get_max_size(). These are used by the
dict_col_get_{fixed,min,max}_size() functions.
cmp_types_are_equal(): Replace with cmp_cols_are_equal().
dict_table_get_col_name(): Add a const qualifier parameter to the
parameter "table".
dtype_binary, dtype_binary_val: Remove.
dtype_is_fixed_size(): Remove.
There always was a one-to-one mapping between dict_tree_t and dict_index_t.
This saves 6 machine words per B-tree index in the data dictionary
cache plus the memory allocation overhead. We save one mem_heap_t
object per index (15 machine words). Considering the internal
fragmentation of the buddy allocator in mem_area_alloc(), this should
save 32 machine words per index (128 bytes on 32-bit systems and 256
bytes on 64-bit systems). (Bug #20877)
struct dict_tree_struct, dict_tree_t: Remove.
struct dict_index_struct: Add page and lock.
dict_tree_create(): Remove. Replace the invocation with
assignment to index->page and a call to rw_lock_create(&index->lock).
dict_tree_free(): Remove. Replace the invocation wtih
a call to rw_lock_free(&index->lock).
dict_index_get_tree(): Remove.
dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve()
and remove the parameter, which was unused.
btr_level_list_remove(): Remove the unused parameter "tree".
Replace the occurrences of "tree" with "index" in names of variables,
functions and data types, e.g. "dict_tree_t tree" becomes
"dict_index_t index". Remove local variables "tree" or "index" of
functions that needed both "tree" and "index".
dict_col_get_clust_pos(): Add parameter clust_index. Replace the
look-up with a linear search of all columns in the clustered index.
row_upd_index_replace_new_col_vals(): Compute clust_index outside
the loops. Compute clust_pos outside the inner loop.
row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary():
Compute clust_index outside the loops. Declare the auxiliary variables
inside the loop scope.
dict_index_add_to_cache(): Instead of incrementing ord_part, set it.
dict_index_remove_from_cache(): Do not touch ord_part.
dtype_t: Reduce mbminlen from 3 to 2 bits.
row_upd(): Add a UNIV_LIKELY hint around node->in_mysql_interface.
dtype_t: Remove unused field "prec", which was supposed to be used for
the precision of decimal columns in stand-alone InnoDB.
dtype_get_prec(): Remove.
dtype_set(), dict_mem_table_add_col(): Remove parameter "prec".
dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len)
into bit-fields.
dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds.
dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields.
Replace the default clust_pos value ULINT_UNDEFINED with
REC_MAX_N_FIELDS and replace all references to clust_pos with calls to
the accessor function dict_col_get_clust_pos().
dict_field_t: Turn prefix_len and fixed_len into bit-fields.
dict_tree_t: Remove pad[64].
dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded,
cached, flags, stat_initialized, and autoinc_inited into bit-fields.
Remove does_not_fit_in_memory from non-debug builds.
dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols,
n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields.
dict_foreign_struct: Turn n_fields and type into bit-fields.
rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields.
Omit level unless #defined UNIV_SYNC_DEBUG.
Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED)
from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic.
dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED.
set type->len to the prefix_len of the index column, if it is a prefix index.
This should prevent bugs similar to Bug #21638 from occurring.
dict_index_copy_types(): Set type->len to prefix_len if prefix_len != 0.
row_build_index_entry(): Set type->len to prefix_len if prefix_len != 0,
also when the column in the tuple is SQL NULL, because the type information
may be used for interpreting other records during btr_page_reorganize().
univ.i: Do not #define YYDEBUG, because it is only useful for debugging
the grammar of the Bison-generated InnoDB SQL parser.
row_build(): Remove type==ROW_COPY_ALSO_EXTERNALS, because it is never
passed.
