2005-11-07 07:23:43 +01:00
drop table if exists t1,t2,t3,t4,t5;
2004-08-31 13:35:04 +02:00
drop database if exists mysqltest;
2001-09-28 07:05:54 +02:00
create table t1 (b char(0));
insert into t1 values (""),(null);
select * from t1;
2000-12-28 02:56:38 +01:00
b
NULL
2001-09-28 07:05:54 +02:00
drop table if exists t1;
create table t1 (b char(0) not null);
create table if not exists t1 (b char(0) not null);
2005-09-12 14:09:19 +02:00
Warnings:
Note 1050 Table 't1' already exists
2001-09-28 07:05:54 +02:00
insert into t1 values (""),(null);
2003-04-30 09:07:37 +02:00
Warnings:
2005-12-01 12:30:11 +01:00
Warning 1048 Column 'b' cannot be null
2001-09-28 07:05:54 +02:00
select * from t1;
2000-12-28 02:56:38 +01:00
b
2003-10-16 07:34:17 +02:00
drop table t1;
2003-12-10 05:31:42 +01:00
create table t1 (a int not null auto_increment,primary key (a)) engine=heap;
2003-01-06 00:48:59 +01:00
drop table t1;
2003-12-10 05:31:42 +01:00
create table t2 engine=heap select * from t1;
2003-06-04 17:28:51 +02:00
ERROR 42S02: Table 'test.t1' doesn't exist
2001-09-28 07:05:54 +02:00
create table t2 select auto+1 from t1;
2003-06-04 17:28:51 +02:00
ERROR 42S02: Table 'test.t1' doesn't exist
2001-09-28 07:05:54 +02:00
drop table if exists t1,t2;
2003-01-06 00:48:59 +01:00
Warnings:
Note 1051 Unknown table 't1'
Note 1051 Unknown table 't2'
2001-09-28 07:05:54 +02:00
create table t1 (b char(0) not null, index(b));
2003-06-04 17:28:51 +02:00
ERROR 42000: The used storage engine can't index column 'b'
2003-12-10 05:31:42 +01:00
create table t1 (a int not null,b text) engine=heap;
2003-06-04 17:28:51 +02:00
ERROR 42000: The used table type doesn't support BLOB/TEXT columns
2001-09-28 07:05:54 +02:00
drop table if exists t1;
2003-10-16 07:34:17 +02:00
Warnings:
Note 1051 Unknown table 't1'
2003-12-10 05:31:42 +01:00
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid)) engine=heap;
2004-06-15 22:38:36 +02:00
ERROR 42000: Incorrect table definition; there can be only one auto column and it must be defined as a key
2001-09-28 07:05:54 +02:00
create table not_existing_database.test (a int);
2005-07-22 05:08:54 +02:00
ERROR 42000: Unknown database 'not_existing_database'
2001-09-28 07:05:54 +02:00
create table `a/a` (a int);
2005-12-31 06:01:26 +01:00
show create table `a/a`;
Table Create Table
a/a CREATE TABLE `a/a` (
2006-02-22 10:09:59 +01:00
`a` int(11) DEFAULT NULL
2005-12-31 06:01:26 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t1 like `a/a`;
drop table `a/a`;
drop table `t1`;
2001-09-28 07:05:54 +02:00
create table `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa int);
2003-06-04 17:28:51 +02:00
ERROR 42000: Incorrect table name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
2001-09-28 07:05:54 +02:00
create table a (`aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` int);
2003-06-04 17:28:51 +02:00
ERROR 42000: Identifier name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' is too long
2005-04-01 14:04:50 +02:00
create table t1 (a datetime default now());
2004-04-02 08:12:53 +02:00
ERROR 42000: Invalid default value for 'a'
2005-04-01 14:04:50 +02:00
create table t1 (a datetime on update now());
2004-06-16 05:18:20 +02:00
ERROR HY000: Invalid ON UPDATE clause for 'a' column
2005-04-01 14:04:50 +02:00
create table t1 (a int default 100 auto_increment);
2004-04-02 08:12:53 +02:00
ERROR 42000: Invalid default value for 'a'
2005-04-01 14:04:50 +02:00
create table t1 (a tinyint default 1000);
ERROR 42000: Invalid default value for 'a'
create table t1 (a varchar(5) default 'abcdef');
ERROR 42000: Invalid default value for 'a'
create table t1 (a varchar(5) default 'abcde');
insert into t1 values();
select * from t1;
a
abcde
alter table t1 alter column a set default 'abcdef';
ERROR 42000: Invalid default value for 'a'
drop table t1;
2001-09-28 07:05:54 +02:00
create table 1ea10 (1a20 int,1e int);
insert into 1ea10 values(1,1);
select 1ea10.1a20,1e+ 1e+10 from 1ea10;
2000-12-28 02:56:38 +01:00
1a20 1e+ 1e+10
1 10000000001
2001-09-28 07:05:54 +02:00
drop table 1ea10;
create table t1 (t1.index int);
drop table t1;
2004-08-31 13:35:04 +02:00
drop database if exists mysqltest;
2003-01-06 00:48:59 +01:00
Warnings:
2004-08-31 13:35:04 +02:00
Note 1008 Can't drop database 'mysqltest'; database doesn't exist
create database mysqltest;
create table mysqltest.$test1 (a$1 int, $b int, c$ int);
insert into mysqltest.$test1 values (1,2,3);
select a$1, $b, c$ from mysqltest.$test1;
2000-12-28 02:56:38 +01:00
a$1 $b c$
1 2 3
2004-08-31 13:35:04 +02:00
create table mysqltest.test2$ (a int);
drop table mysqltest.test2$;
drop database mysqltest;
2003-03-16 15:28:30 +01:00
create table `` (a int);
2003-06-04 17:28:51 +02:00
ERROR 42000: Incorrect table name ''
2003-03-16 15:28:30 +01:00
drop table if exists ``;
2003-06-04 17:28:51 +02:00
ERROR 42000: Incorrect table name ''
2003-03-16 15:28:30 +01:00
create table t1 (`` int);
2003-06-04 17:28:51 +02:00
ERROR 42000: Incorrect column name ''
2003-10-16 17:33:44 +02:00
create table t1 (i int, index `` (i));
2003-10-16 22:15:45 +02:00
ERROR 42000: Incorrect index name ''
2010-06-11 10:14:38 +02:00
create table t1 (i int);
lock tables t1 read;
create table t2 (j int);
ERROR HY000: Table 't2' was not locked with LOCK TABLES
create temporary table t2 (j int);
drop temporary table t2;
unlock tables;
drop table t1;
2001-09-28 07:05:54 +02:00
create table t1 (a int auto_increment not null primary key, B CHAR(20));
insert into t1 (b) values ("hello"),("my"),("world");
create table t2 (key (b)) select * from t1;
explain select * from t2 where b="world";
2002-09-26 22:08:22 +02:00
id select_type table type possible_keys key key_len ref rows Extra
2002-11-21 14:56:48 +01:00
1 SIMPLE t2 ref B B 21 const 1 Using where
2001-09-28 07:05:54 +02:00
select * from t2 where b="world";
2001-06-12 10:59:14 +02:00
a B
3 world
2001-09-28 07:05:54 +02:00
drop table t1,t2;
2001-11-18 13:13:09 +01:00
create table t1(x varchar(50) );
create table t2 select x from t1 where 1=2;
describe t1;
2003-06-02 14:19:06 +02:00
Field Type Null Key Default Extra
x varchar(50) YES NULL
2001-11-18 13:13:09 +01:00
describe t2;
2003-06-02 14:19:06 +02:00
Field Type Null Key Default Extra
2003-10-03 23:54:32 +02:00
x varchar(50) YES NULL
2001-12-29 14:15:51 +01:00
drop table t2;
create table t2 select now() as a , curtime() as b, curdate() as c , 1+1 as d , 1.0 + 1 as e , 33333333333333333 + 3 as f;
describe t2;
2003-06-02 14:19:06 +02:00
Field Type Null Key Default Extra
2004-12-10 10:07:11 +01:00
a datetime NO 0000-00-00 00:00:00
b time NO 00:00:00
c date NO 0000-00-00
2005-05-05 22:01:39 +02:00
d int(3) NO 0
e decimal(3,1) NO 0.0
f bigint(19) NO 0
2001-12-29 19:56:50 +01:00
drop table t2;
2002-01-02 23:46:43 +01:00
create table t2 select CAST("2001-12-29" AS DATE) as d, CAST("20:45:11" AS TIME) as t, CAST("2001-12-29 20:45:11" AS DATETIME) as dt;
2001-12-29 19:56:50 +01:00
describe t2;
2003-06-02 14:19:06 +02:00
Field Type Null Key Default Extra
2004-03-09 21:03:01 +01:00
d date YES NULL
t time YES NULL
dt datetime YES NULL
2001-11-18 13:13:09 +01:00
drop table t1,t2;
2002-07-20 16:36:56 +02:00
create table t1 (a tinyint);
create table t2 (a int) select * from t1;
describe t1;
2003-06-02 14:19:06 +02:00
Field Type Null Key Default Extra
a tinyint(4) YES NULL
2002-07-20 16:36:56 +02:00
describe t2;
2003-06-02 14:19:06 +02:00
Field Type Null Key Default Extra
a int(11) YES NULL
2002-07-20 16:36:56 +02:00
drop table if exists t2;
create table t2 (a int, a float) select * from t1;
2003-06-04 17:28:51 +02:00
ERROR 42S21: Duplicate column name 'a'
2002-07-20 16:36:56 +02:00
drop table if exists t2;
2003-01-06 00:48:59 +01:00
Warnings:
Note 1051 Unknown table 't2'
2002-07-20 16:36:56 +02:00
create table t2 (a int) select a as b, a+1 as b from t1;
2003-06-04 17:28:51 +02:00
ERROR 42S21: Duplicate column name 'b'
2002-07-20 16:36:56 +02:00
drop table if exists t2;
2003-01-06 00:48:59 +01:00
Warnings:
Note 1051 Unknown table 't2'
2002-07-20 16:36:56 +02:00
create table t2 (b int) select a as b, a+1 as b from t1;
2003-06-04 17:28:51 +02:00
ERROR 42S21: Duplicate column name 'b'
2002-07-20 16:36:56 +02:00
drop table if exists t1,t2;
2003-01-06 00:48:59 +01:00
Warnings:
Note 1051 Unknown table 't2'
2003-10-08 17:53:31 +02:00
CREATE TABLE t1 (a int not null);
INSERT INTO t1 values (1),(2),(1);
CREATE TABLE t2 (primary key(a)) SELECT * FROM t1;
2006-01-23 12:17:05 +01:00
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
2003-10-08 17:53:31 +02:00
SELECT * from t2;
ERROR 42S02: Table 'test.t2' doesn't exist
DROP TABLE t1;
DROP TABLE IF EXISTS t2;
Warnings:
Note 1051 Unknown table 't2'
2002-03-13 00:02:45 +01:00
create table t1 (a int not null, b int, primary key(a), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b));
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2004-10-02 21:20:08 +02:00
`a` int(11) NOT NULL,
2006-02-22 10:09:59 +01:00
`b` int(11) DEFAULT NULL,
2006-02-02 20:39:28 +01:00
PRIMARY KEY (`a`),
2004-05-11 23:29:52 +02:00
KEY `b` (`b`),
KEY `b_2` (`b`),
KEY `b_3` (`b`),
KEY `b_4` (`b`),
KEY `b_5` (`b`),
KEY `b_6` (`b`),
KEY `b_7` (`b`),
KEY `b_8` (`b`),
KEY `b_9` (`b`),
KEY `b_10` (`b`),
KEY `b_11` (`b`),
KEY `b_12` (`b`),
KEY `b_13` (`b`),
KEY `b_14` (`b`),
KEY `b_15` (`b`),
KEY `b_16` (`b`),
KEY `b_17` (`b`),
KEY `b_18` (`b`),
KEY `b_19` (`b`),
KEY `b_20` (`b`),
KEY `b_21` (`b`),
KEY `b_22` (`b`),
KEY `b_23` (`b`),
KEY `b_24` (`b`),
KEY `b_25` (`b`),
KEY `b_26` (`b`),
KEY `b_27` (`b`),
KEY `b_28` (`b`),
KEY `b_29` (`b`),
KEY `b_30` (`b`),
KEY `b_31` (`b`)
2003-12-10 05:31:42 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2002-03-13 00:02:45 +01:00
drop table t1;
2002-08-07 21:35:47 +02:00
create table t1 select if(1,'1','0'), month("2002-08-02");
drop table t1;
2002-09-04 14:24:27 +02:00
create table t1 select if('2002'='2002','Y','N');
select * from t1;
if('2002'='2002','Y','N')
Y
drop table if exists t1;
2003-12-17 23:52:03 +01:00
SET SESSION storage_engine="heap";
SELECT @@storage_engine;
@@storage_engine
2005-04-23 00:05:05 +02:00
MEMORY
2003-03-19 20:43:41 +01:00
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2004-10-02 21:20:08 +02:00
`a` int(11) NOT NULL
2005-01-14 02:38:13 +01:00
) ENGINE=MEMORY DEFAULT CHARSET=latin1
2003-03-19 20:43:41 +01:00
drop table t1;
2003-12-17 23:52:03 +01:00
SET SESSION storage_engine="gemini";
2009-12-22 12:02:52 +01:00
ERROR 42000: Unknown storage engine 'gemini'
2003-12-17 23:52:03 +01:00
SELECT @@storage_engine;
@@storage_engine
2005-04-23 00:05:05 +02:00
MEMORY
2003-03-19 20:43:41 +01:00
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2004-10-02 21:20:08 +02:00
`a` int(11) NOT NULL
2005-01-14 02:38:13 +01:00
) ENGINE=MEMORY DEFAULT CHARSET=latin1
2003-12-17 23:52:03 +01:00
SET SESSION storage_engine=default;
2003-03-19 20:43:41 +01:00
drop table t1;
2003-05-13 19:16:30 +02:00
create table t1 ( k1 varchar(2), k2 int, primary key(k1,k2));
insert into t1 values ("a", 1), ("b", 2);
insert into t1 values ("c", NULL);
2003-06-04 17:28:51 +02:00
ERROR 23000: Column 'k2' cannot be null
2003-05-13 19:16:30 +02:00
insert into t1 values (NULL, 3);
2003-06-04 17:28:51 +02:00
ERROR 23000: Column 'k1' cannot be null
2003-05-13 19:16:30 +02:00
insert into t1 values (NULL, NULL);
2003-06-04 17:28:51 +02:00
ERROR 23000: Column 'k1' cannot be null
2003-05-13 19:16:30 +02:00
drop table t1;
2003-10-16 07:16:39 +02:00
create table t1 select x'4132';
drop table t1;
2003-10-06 20:11:39 +02:00
create table t1 select 1,2,3;
create table if not exists t1 select 1,2;
2005-09-12 14:09:19 +02:00
Warnings:
Note 1050 Table 't1' already exists
2003-10-06 20:11:39 +02:00
create table if not exists t1 select 1,2,3,4;
2003-10-16 07:16:39 +02:00
ERROR 21S01: Column count doesn't match value count at row 1
2003-10-06 20:11:39 +02:00
create table if not exists t1 select 1;
2005-09-12 14:09:19 +02:00
Warnings:
Note 1050 Table 't1' already exists
2003-10-06 20:11:39 +02:00
select * from t1;
1 2 3
1 2 3
0 1 2
0 0 1
drop table t1;
This changeset is largely a handler cleanup changeset (WL#3281), but includes fixes and cleanups that was found necessary while testing the handler changes
Changes that requires code changes in other code of other storage engines.
(Note that all changes are very straightforward and one should find all issues
by compiling a --debug build and fixing all compiler errors and all
asserts in field.cc while running the test suite),
- New optional handler function introduced: reset()
This is called after every DML statement to make it easy for a handler to
statement specific cleanups.
(The only case it's not called is if force the file to be closed)
- handler::extra(HA_EXTRA_RESET) is removed. Code that was there before
should be moved to handler::reset()
- table->read_set contains a bitmap over all columns that are needed
in the query. read_row() and similar functions only needs to read these
columns
- table->write_set contains a bitmap over all columns that will be updated
in the query. write_row() and update_row() only needs to update these
columns.
The above bitmaps should now be up to date in all context
(including ALTER TABLE, filesort()).
The handler is informed of any changes to the bitmap after
fix_fields() by calling the virtual function
handler::column_bitmaps_signal(). If the handler does caching of
these bitmaps (instead of using table->read_set, table->write_set),
it should redo the caching in this code. as the signal() may be sent
several times, it's probably best to set a variable in the signal
and redo the caching on read_row() / write_row() if the variable was
set.
- Removed the read_set and write_set bitmap objects from the handler class
- Removed all column bit handling functions from the handler class.
(Now one instead uses the normal bitmap functions in my_bitmap.c instead
of handler dedicated bitmap functions)
- field->query_id is removed. One should instead instead check
table->read_set and table->write_set if a field is used in the query.
- handler::extra(HA_EXTRA_RETRIVE_ALL_COLS) and
handler::extra(HA_EXTRA_RETRIEVE_PRIMARY_KEY) are removed. One should now
instead use table->read_set to check for which columns to retrieve.
- If a handler needs to call Field->val() or Field->store() on columns
that are not used in the query, one should install a temporary
all-columns-used map while doing so. For this, we provide the following
functions:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->read_set);
field->val();
dbug_tmp_restore_column_map(table->read_set, old_map);
and similar for the write map:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->write_set);
field->val();
dbug_tmp_restore_column_map(table->write_set, old_map);
If this is not done, you will sooner or later hit a DBUG_ASSERT
in the field store() / val() functions.
(For not DBUG binaries, the dbug_tmp_restore_column_map() and
dbug_tmp_restore_column_map() are inline dummy functions and should
be optimized away be the compiler).
- If one needs to temporary set the column map for all binaries (and not
just to avoid the DBUG_ASSERT() in the Field::store() / Field::val()
methods) one should use the functions tmp_use_all_columns() and
tmp_restore_column_map() instead of the above dbug_ variants.
- All 'status' fields in the handler base class (like records,
data_file_length etc) are now stored in a 'stats' struct. This makes
it easier to know what status variables are provided by the base
handler. This requires some trivial variable names in the extra()
function.
- New virtual function handler::records(). This is called to optimize
COUNT(*) if (handler::table_flags() & HA_HAS_RECORDS()) is true.
(stats.records is not supposed to be an exact value. It's only has to
be 'reasonable enough' for the optimizer to be able to choose a good
optimization path).
- Non virtual handler::init() function added for caching of virtual
constants from engine.
- Removed has_transactions() virtual method. Now one should instead return
HA_NO_TRANSACTIONS in table_flags() if the table handler DOES NOT support
transactions.
- The 'xxxx_create_handler()' function now has a MEM_ROOT_root argument
that is to be used with 'new handler_name()' to allocate the handler
in the right area. The xxxx_create_handler() function is also
responsible for any initialization of the object before returning.
For example, one should change:
static handler *myisam_create_handler(TABLE_SHARE *table)
{
return new ha_myisam(table);
}
->
static handler *myisam_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
{
return new (mem_root) ha_myisam(table);
}
- New optional virtual function: use_hidden_primary_key().
This is called in case of an update/delete when
(table_flags() and HA_PRIMARY_KEY_REQUIRED_FOR_DELETE) is defined
but we don't have a primary key. This allows the handler to take precisions
in remembering any hidden primary key to able to update/delete any
found row. The default handler marks all columns to be read.
- handler::table_flags() now returns a ulonglong (to allow for more flags).
- New/changed table_flags()
- HA_HAS_RECORDS Set if ::records() is supported
- HA_NO_TRANSACTIONS Set if engine doesn't support transactions
- HA_PRIMARY_KEY_REQUIRED_FOR_DELETE
Set if we should mark all primary key columns for
read when reading rows as part of a DELETE
statement. If there is no primary key,
all columns are marked for read.
- HA_PARTIAL_COLUMN_READ Set if engine will not read all columns in some
cases (based on table->read_set)
- HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS
Renamed to HA_PRIMARY_KEY_REQUIRED_FOR_POSITION.
- HA_DUPP_POS Renamed to HA_DUPLICATE_POS
- HA_REQUIRES_KEY_COLUMNS_FOR_DELETE
Set this if we should mark ALL key columns for
read when when reading rows as part of a DELETE
statement. In case of an update we will mark
all keys for read for which key part changed
value.
- HA_STATS_RECORDS_IS_EXACT
Set this if stats.records is exact.
(This saves us some extra records() calls
when optimizing COUNT(*))
- Removed table_flags()
- HA_NOT_EXACT_COUNT Now one should instead use HA_HAS_RECORDS if
handler::records() gives an exact count() and
HA_STATS_RECORDS_IS_EXACT if stats.records is exact.
- HA_READ_RND_SAME Removed (no one supported this one)
- Removed not needed functions ha_retrieve_all_cols() and ha_retrieve_all_pk()
- Renamed handler::dupp_pos to handler::dup_pos
- Removed not used variable handler::sortkey
Upper level handler changes:
- ha_reset() now does some overall checks and calls ::reset()
- ha_table_flags() added. This is a cached version of table_flags(). The
cache is updated on engine creation time and updated on open.
MySQL level changes (not obvious from the above):
- DBUG_ASSERT() added to check that column usage matches what is set
in the column usage bit maps. (This found a LOT of bugs in current
column marking code).
- In 5.1 before, all used columns was marked in read_set and only updated
columns was marked in write_set. Now we only mark columns for which we
need a value in read_set.
- Column bitmaps are created in open_binary_frm() and open_table_from_share().
(Before this was in table.cc)
- handler::table_flags() calls are replaced with handler::ha_table_flags()
- For calling field->val() you must have the corresponding bit set in
table->read_set. For calling field->store() you must have the
corresponding bit set in table->write_set. (There are asserts in
all store()/val() functions to catch wrong usage)
- thd->set_query_id is renamed to thd->mark_used_columns and instead
of setting this to an integer value, this has now the values:
MARK_COLUMNS_NONE, MARK_COLUMNS_READ, MARK_COLUMNS_WRITE
Changed also all variables named 'set_query_id' to mark_used_columns.
- In filesort() we now inform the handler of exactly which columns are needed
doing the sort and choosing the rows.
- The TABLE_SHARE object has a 'all_set' column bitmap one can use
when one needs a column bitmap with all columns set.
(This is used for table->use_all_columns() and other places)
- The TABLE object has 3 column bitmaps:
- def_read_set Default bitmap for columns to be read
- def_write_set Default bitmap for columns to be written
- tmp_set Can be used as a temporary bitmap when needed.
The table object has also two pointer to bitmaps read_set and write_set
that the handler should use to find out which columns are used in which way.
- count() optimization now calls handler::records() instead of using
handler->stats.records (if (table_flags() & HA_HAS_RECORDS) is true).
- Added extra argument to Item::walk() to indicate if we should also
traverse sub queries.
- Added TABLE parameter to cp_buffer_from_ref()
- Don't close tables created with CREATE ... SELECT but keep them in
the table cache. (Faster usage of newly created tables).
New interfaces:
- table->clear_column_bitmaps() to initialize the bitmaps for tables
at start of new statements.
- table->column_bitmaps_set() to set up new column bitmaps and signal
the handler about this.
- table->column_bitmaps_set_no_signal() for some few cases where we need
to setup new column bitmaps but don't signal the handler (as the handler
has already been signaled about these before). Used for the momement
only in opt_range.cc when doing ROR scans.
- table->use_all_columns() to install a bitmap where all columns are marked
as use in the read and the write set.
- table->default_column_bitmaps() to install the normal read and write
column bitmaps, but not signaling the handler about this.
This is mainly used when creating TABLE instances.
- table->mark_columns_needed_for_delete(),
table->mark_columns_needed_for_delete() and
table->mark_columns_needed_for_insert() to allow us to put additional
columns in column usage maps if handler so requires.
(The handler indicates what it neads in handler->table_flags())
- table->prepare_for_position() to allow us to tell handler that it
needs to read primary key parts to be able to store them in
future table->position() calls.
(This replaces the table->file->ha_retrieve_all_pk function)
- table->mark_auto_increment_column() to tell handler are going to update
columns part of any auto_increment key.
- table->mark_columns_used_by_index() to mark all columns that is part of
an index. It will also send extra(HA_EXTRA_KEYREAD) to handler to allow
it to quickly know that it only needs to read colums that are part
of the key. (The handler can also use the column map for detecting this,
but simpler/faster handler can just monitor the extra() call).
- table->mark_columns_used_by_index_no_reset() to in addition to other columns,
also mark all columns that is used by the given key.
- table->restore_column_maps_after_mark_index() to restore to default
column maps after a call to table->mark_columns_used_by_index().
- New item function register_field_in_read_map(), for marking used columns
in table->read_map. Used by filesort() to mark all used columns
- Maintain in TABLE->merge_keys set of all keys that are used in query.
(Simplices some optimization loops)
- Maintain Field->part_of_key_not_clustered which is like Field->part_of_key
but the field in the clustered key is not assumed to be part of all index.
(used in opt_range.cc for faster loops)
- dbug_tmp_use_all_columns(), dbug_tmp_restore_column_map()
tmp_use_all_columns() and tmp_restore_column_map() functions to temporally
mark all columns as usable. The 'dbug_' version is primarily intended
inside a handler when it wants to just call Field:store() & Field::val()
functions, but don't need the column maps set for any other usage.
(ie:: bitmap_is_set() is never called)
- We can't use compare_records() to skip updates for handlers that returns
a partial column set and the read_set doesn't cover all columns in the
write set. The reason for this is that if we have a column marked only for
write we can't in the MySQL level know if the value changed or not.
The reason this worked before was that MySQL marked all to be written
columns as also to be read. The new 'optimal' bitmaps exposed this 'hidden
bug'.
- open_table_from_share() does not anymore setup temporary MEM_ROOT
object as a thread specific variable for the handler. Instead we
send the to-be-used MEMROOT to get_new_handler().
(Simpler, faster code)
Bugs fixed:
- Column marking was not done correctly in a lot of cases.
(ALTER TABLE, when using triggers, auto_increment fields etc)
(Could potentially result in wrong values inserted in table handlers
relying on that the old column maps or field->set_query_id was correct)
Especially when it comes to triggers, there may be cases where the
old code would cause lost/wrong values for NDB and/or InnoDB tables.
- Split thd->options flag OPTION_STATUS_NO_TRANS_UPDATE to two flags:
OPTION_STATUS_NO_TRANS_UPDATE and OPTION_KEEP_LOG.
This allowed me to remove some wrong warnings about:
"Some non-transactional changed tables couldn't be rolled back"
- Fixed handling of INSERT .. SELECT and CREATE ... SELECT that wrongly reset
(thd->options & OPTION_STATUS_NO_TRANS_UPDATE) which caused us to loose
some warnings about
"Some non-transactional changed tables couldn't be rolled back")
- Fixed use of uninitialized memory in ha_ndbcluster.cc::delete_table()
which could cause delete_table to report random failures.
- Fixed core dumps for some tests when running with --debug
- Added missing FN_LIBCHAR in mysql_rm_tmp_tables()
(This has probably caused us to not properly remove temporary files after
crash)
- slow_logs was not properly initialized, which could maybe cause
extra/lost entries in slow log.
- If we get an duplicate row on insert, change column map to read and
write all columns while retrying the operation. This is required by
the definition of REPLACE and also ensures that fields that are only
part of UPDATE are properly handled. This fixed a bug in NDB and
REPLACE where REPLACE wrongly copied some column values from the replaced
row.
- For table handler that doesn't support NULL in keys, we would give an error
when creating a primary key with NULL fields, even after the fields has been
automaticly converted to NOT NULL.
- Creating a primary key on a SPATIAL key, would fail if field was not
declared as NOT NULL.
Cleanups:
- Removed not used condition argument to setup_tables
- Removed not needed item function reset_query_id_processor().
- Field->add_index is removed. Now this is instead maintained in
(field->flags & FIELD_IN_ADD_INDEX)
- Field->fieldnr is removed (use field->field_index instead)
- New argument to filesort() to indicate that it should return a set of
row pointers (not used columns). This allowed me to remove some references
to sql_command in filesort and should also enable us to return column
results in some cases where we couldn't before.
- Changed column bitmap handling in opt_range.cc to be aligned with TABLE
bitmap, which allowed me to use bitmap functions instead of looping over
all fields to create some needed bitmaps. (Faster and smaller code)
- Broke up found too long lines
- Moved some variable declaration at start of function for better code
readability.
- Removed some not used arguments from functions.
(setup_fields(), mysql_prepare_insert_check_table())
- setup_fields() now takes an enum instead of an int for marking columns
usage.
- For internal temporary tables, use handler::write_row(),
handler::delete_row() and handler::update_row() instead of
handler::ha_xxxx() for faster execution.
- Changed some constants to enum's and define's.
- Using separate column read and write sets allows for easier checking
of timestamp field was set by statement.
- Remove calls to free_io_cache() as this is now done automaticly in ha_reset()
- Don't build table->normalized_path as this is now identical to table->path
(after bar's fixes to convert filenames)
- Fixed some missed DBUG_PRINT(.."%lx") to use "0x%lx" to make it easier to
do comparision with the 'convert-dbug-for-diff' tool.
Things left to do in 5.1:
- We wrongly log failed CREATE TABLE ... SELECT in some cases when using
row based logging (as shown by testcase binlog_row_mix_innodb_myisam.result)
Mats has promised to look into this.
- Test that my fix for CREATE TABLE ... SELECT is indeed correct.
(I added several test cases for this, but in this case it's better that
someone else also tests this throughly).
Lars has promosed to do this.
2006-06-04 17:52:22 +02:00
flush status;
2003-10-15 20:41:13 +02:00
create table t1 (a int not null, b int, primary key (a));
insert into t1 values (1,1);
create table if not exists t1 select 2;
2005-01-15 02:09:35 +01:00
Warnings:
2005-09-12 14:09:19 +02:00
Note 1050 Table 't1' already exists
2005-09-13 00:44:50 +02:00
Warning 1364 Field 'a' doesn't have a default value
2003-10-15 20:41:13 +02:00
select * from t1;
a b
1 1
0 2
create table if not exists t1 select 3 as 'a',4 as 'b';
2005-01-15 02:09:35 +01:00
Warnings:
2005-09-12 14:09:19 +02:00
Note 1050 Table 't1' already exists
2003-10-15 20:41:13 +02:00
create table if not exists t1 select 3 as 'a',3 as 'b';
2006-01-23 12:17:05 +01:00
ERROR 23000: Duplicate entry '3' for key 'PRIMARY'
This changeset is largely a handler cleanup changeset (WL#3281), but includes fixes and cleanups that was found necessary while testing the handler changes
Changes that requires code changes in other code of other storage engines.
(Note that all changes are very straightforward and one should find all issues
by compiling a --debug build and fixing all compiler errors and all
asserts in field.cc while running the test suite),
- New optional handler function introduced: reset()
This is called after every DML statement to make it easy for a handler to
statement specific cleanups.
(The only case it's not called is if force the file to be closed)
- handler::extra(HA_EXTRA_RESET) is removed. Code that was there before
should be moved to handler::reset()
- table->read_set contains a bitmap over all columns that are needed
in the query. read_row() and similar functions only needs to read these
columns
- table->write_set contains a bitmap over all columns that will be updated
in the query. write_row() and update_row() only needs to update these
columns.
The above bitmaps should now be up to date in all context
(including ALTER TABLE, filesort()).
The handler is informed of any changes to the bitmap after
fix_fields() by calling the virtual function
handler::column_bitmaps_signal(). If the handler does caching of
these bitmaps (instead of using table->read_set, table->write_set),
it should redo the caching in this code. as the signal() may be sent
several times, it's probably best to set a variable in the signal
and redo the caching on read_row() / write_row() if the variable was
set.
- Removed the read_set and write_set bitmap objects from the handler class
- Removed all column bit handling functions from the handler class.
(Now one instead uses the normal bitmap functions in my_bitmap.c instead
of handler dedicated bitmap functions)
- field->query_id is removed. One should instead instead check
table->read_set and table->write_set if a field is used in the query.
- handler::extra(HA_EXTRA_RETRIVE_ALL_COLS) and
handler::extra(HA_EXTRA_RETRIEVE_PRIMARY_KEY) are removed. One should now
instead use table->read_set to check for which columns to retrieve.
- If a handler needs to call Field->val() or Field->store() on columns
that are not used in the query, one should install a temporary
all-columns-used map while doing so. For this, we provide the following
functions:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->read_set);
field->val();
dbug_tmp_restore_column_map(table->read_set, old_map);
and similar for the write map:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->write_set);
field->val();
dbug_tmp_restore_column_map(table->write_set, old_map);
If this is not done, you will sooner or later hit a DBUG_ASSERT
in the field store() / val() functions.
(For not DBUG binaries, the dbug_tmp_restore_column_map() and
dbug_tmp_restore_column_map() are inline dummy functions and should
be optimized away be the compiler).
- If one needs to temporary set the column map for all binaries (and not
just to avoid the DBUG_ASSERT() in the Field::store() / Field::val()
methods) one should use the functions tmp_use_all_columns() and
tmp_restore_column_map() instead of the above dbug_ variants.
- All 'status' fields in the handler base class (like records,
data_file_length etc) are now stored in a 'stats' struct. This makes
it easier to know what status variables are provided by the base
handler. This requires some trivial variable names in the extra()
function.
- New virtual function handler::records(). This is called to optimize
COUNT(*) if (handler::table_flags() & HA_HAS_RECORDS()) is true.
(stats.records is not supposed to be an exact value. It's only has to
be 'reasonable enough' for the optimizer to be able to choose a good
optimization path).
- Non virtual handler::init() function added for caching of virtual
constants from engine.
- Removed has_transactions() virtual method. Now one should instead return
HA_NO_TRANSACTIONS in table_flags() if the table handler DOES NOT support
transactions.
- The 'xxxx_create_handler()' function now has a MEM_ROOT_root argument
that is to be used with 'new handler_name()' to allocate the handler
in the right area. The xxxx_create_handler() function is also
responsible for any initialization of the object before returning.
For example, one should change:
static handler *myisam_create_handler(TABLE_SHARE *table)
{
return new ha_myisam(table);
}
->
static handler *myisam_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
{
return new (mem_root) ha_myisam(table);
}
- New optional virtual function: use_hidden_primary_key().
This is called in case of an update/delete when
(table_flags() and HA_PRIMARY_KEY_REQUIRED_FOR_DELETE) is defined
but we don't have a primary key. This allows the handler to take precisions
in remembering any hidden primary key to able to update/delete any
found row. The default handler marks all columns to be read.
- handler::table_flags() now returns a ulonglong (to allow for more flags).
- New/changed table_flags()
- HA_HAS_RECORDS Set if ::records() is supported
- HA_NO_TRANSACTIONS Set if engine doesn't support transactions
- HA_PRIMARY_KEY_REQUIRED_FOR_DELETE
Set if we should mark all primary key columns for
read when reading rows as part of a DELETE
statement. If there is no primary key,
all columns are marked for read.
- HA_PARTIAL_COLUMN_READ Set if engine will not read all columns in some
cases (based on table->read_set)
- HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS
Renamed to HA_PRIMARY_KEY_REQUIRED_FOR_POSITION.
- HA_DUPP_POS Renamed to HA_DUPLICATE_POS
- HA_REQUIRES_KEY_COLUMNS_FOR_DELETE
Set this if we should mark ALL key columns for
read when when reading rows as part of a DELETE
statement. In case of an update we will mark
all keys for read for which key part changed
value.
- HA_STATS_RECORDS_IS_EXACT
Set this if stats.records is exact.
(This saves us some extra records() calls
when optimizing COUNT(*))
- Removed table_flags()
- HA_NOT_EXACT_COUNT Now one should instead use HA_HAS_RECORDS if
handler::records() gives an exact count() and
HA_STATS_RECORDS_IS_EXACT if stats.records is exact.
- HA_READ_RND_SAME Removed (no one supported this one)
- Removed not needed functions ha_retrieve_all_cols() and ha_retrieve_all_pk()
- Renamed handler::dupp_pos to handler::dup_pos
- Removed not used variable handler::sortkey
Upper level handler changes:
- ha_reset() now does some overall checks and calls ::reset()
- ha_table_flags() added. This is a cached version of table_flags(). The
cache is updated on engine creation time and updated on open.
MySQL level changes (not obvious from the above):
- DBUG_ASSERT() added to check that column usage matches what is set
in the column usage bit maps. (This found a LOT of bugs in current
column marking code).
- In 5.1 before, all used columns was marked in read_set and only updated
columns was marked in write_set. Now we only mark columns for which we
need a value in read_set.
- Column bitmaps are created in open_binary_frm() and open_table_from_share().
(Before this was in table.cc)
- handler::table_flags() calls are replaced with handler::ha_table_flags()
- For calling field->val() you must have the corresponding bit set in
table->read_set. For calling field->store() you must have the
corresponding bit set in table->write_set. (There are asserts in
all store()/val() functions to catch wrong usage)
- thd->set_query_id is renamed to thd->mark_used_columns and instead
of setting this to an integer value, this has now the values:
MARK_COLUMNS_NONE, MARK_COLUMNS_READ, MARK_COLUMNS_WRITE
Changed also all variables named 'set_query_id' to mark_used_columns.
- In filesort() we now inform the handler of exactly which columns are needed
doing the sort and choosing the rows.
- The TABLE_SHARE object has a 'all_set' column bitmap one can use
when one needs a column bitmap with all columns set.
(This is used for table->use_all_columns() and other places)
- The TABLE object has 3 column bitmaps:
- def_read_set Default bitmap for columns to be read
- def_write_set Default bitmap for columns to be written
- tmp_set Can be used as a temporary bitmap when needed.
The table object has also two pointer to bitmaps read_set and write_set
that the handler should use to find out which columns are used in which way.
- count() optimization now calls handler::records() instead of using
handler->stats.records (if (table_flags() & HA_HAS_RECORDS) is true).
- Added extra argument to Item::walk() to indicate if we should also
traverse sub queries.
- Added TABLE parameter to cp_buffer_from_ref()
- Don't close tables created with CREATE ... SELECT but keep them in
the table cache. (Faster usage of newly created tables).
New interfaces:
- table->clear_column_bitmaps() to initialize the bitmaps for tables
at start of new statements.
- table->column_bitmaps_set() to set up new column bitmaps and signal
the handler about this.
- table->column_bitmaps_set_no_signal() for some few cases where we need
to setup new column bitmaps but don't signal the handler (as the handler
has already been signaled about these before). Used for the momement
only in opt_range.cc when doing ROR scans.
- table->use_all_columns() to install a bitmap where all columns are marked
as use in the read and the write set.
- table->default_column_bitmaps() to install the normal read and write
column bitmaps, but not signaling the handler about this.
This is mainly used when creating TABLE instances.
- table->mark_columns_needed_for_delete(),
table->mark_columns_needed_for_delete() and
table->mark_columns_needed_for_insert() to allow us to put additional
columns in column usage maps if handler so requires.
(The handler indicates what it neads in handler->table_flags())
- table->prepare_for_position() to allow us to tell handler that it
needs to read primary key parts to be able to store them in
future table->position() calls.
(This replaces the table->file->ha_retrieve_all_pk function)
- table->mark_auto_increment_column() to tell handler are going to update
columns part of any auto_increment key.
- table->mark_columns_used_by_index() to mark all columns that is part of
an index. It will also send extra(HA_EXTRA_KEYREAD) to handler to allow
it to quickly know that it only needs to read colums that are part
of the key. (The handler can also use the column map for detecting this,
but simpler/faster handler can just monitor the extra() call).
- table->mark_columns_used_by_index_no_reset() to in addition to other columns,
also mark all columns that is used by the given key.
- table->restore_column_maps_after_mark_index() to restore to default
column maps after a call to table->mark_columns_used_by_index().
- New item function register_field_in_read_map(), for marking used columns
in table->read_map. Used by filesort() to mark all used columns
- Maintain in TABLE->merge_keys set of all keys that are used in query.
(Simplices some optimization loops)
- Maintain Field->part_of_key_not_clustered which is like Field->part_of_key
but the field in the clustered key is not assumed to be part of all index.
(used in opt_range.cc for faster loops)
- dbug_tmp_use_all_columns(), dbug_tmp_restore_column_map()
tmp_use_all_columns() and tmp_restore_column_map() functions to temporally
mark all columns as usable. The 'dbug_' version is primarily intended
inside a handler when it wants to just call Field:store() & Field::val()
functions, but don't need the column maps set for any other usage.
(ie:: bitmap_is_set() is never called)
- We can't use compare_records() to skip updates for handlers that returns
a partial column set and the read_set doesn't cover all columns in the
write set. The reason for this is that if we have a column marked only for
write we can't in the MySQL level know if the value changed or not.
The reason this worked before was that MySQL marked all to be written
columns as also to be read. The new 'optimal' bitmaps exposed this 'hidden
bug'.
- open_table_from_share() does not anymore setup temporary MEM_ROOT
object as a thread specific variable for the handler. Instead we
send the to-be-used MEMROOT to get_new_handler().
(Simpler, faster code)
Bugs fixed:
- Column marking was not done correctly in a lot of cases.
(ALTER TABLE, when using triggers, auto_increment fields etc)
(Could potentially result in wrong values inserted in table handlers
relying on that the old column maps or field->set_query_id was correct)
Especially when it comes to triggers, there may be cases where the
old code would cause lost/wrong values for NDB and/or InnoDB tables.
- Split thd->options flag OPTION_STATUS_NO_TRANS_UPDATE to two flags:
OPTION_STATUS_NO_TRANS_UPDATE and OPTION_KEEP_LOG.
This allowed me to remove some wrong warnings about:
"Some non-transactional changed tables couldn't be rolled back"
- Fixed handling of INSERT .. SELECT and CREATE ... SELECT that wrongly reset
(thd->options & OPTION_STATUS_NO_TRANS_UPDATE) which caused us to loose
some warnings about
"Some non-transactional changed tables couldn't be rolled back")
- Fixed use of uninitialized memory in ha_ndbcluster.cc::delete_table()
which could cause delete_table to report random failures.
- Fixed core dumps for some tests when running with --debug
- Added missing FN_LIBCHAR in mysql_rm_tmp_tables()
(This has probably caused us to not properly remove temporary files after
crash)
- slow_logs was not properly initialized, which could maybe cause
extra/lost entries in slow log.
- If we get an duplicate row on insert, change column map to read and
write all columns while retrying the operation. This is required by
the definition of REPLACE and also ensures that fields that are only
part of UPDATE are properly handled. This fixed a bug in NDB and
REPLACE where REPLACE wrongly copied some column values from the replaced
row.
- For table handler that doesn't support NULL in keys, we would give an error
when creating a primary key with NULL fields, even after the fields has been
automaticly converted to NOT NULL.
- Creating a primary key on a SPATIAL key, would fail if field was not
declared as NOT NULL.
Cleanups:
- Removed not used condition argument to setup_tables
- Removed not needed item function reset_query_id_processor().
- Field->add_index is removed. Now this is instead maintained in
(field->flags & FIELD_IN_ADD_INDEX)
- Field->fieldnr is removed (use field->field_index instead)
- New argument to filesort() to indicate that it should return a set of
row pointers (not used columns). This allowed me to remove some references
to sql_command in filesort and should also enable us to return column
results in some cases where we couldn't before.
- Changed column bitmap handling in opt_range.cc to be aligned with TABLE
bitmap, which allowed me to use bitmap functions instead of looping over
all fields to create some needed bitmaps. (Faster and smaller code)
- Broke up found too long lines
- Moved some variable declaration at start of function for better code
readability.
- Removed some not used arguments from functions.
(setup_fields(), mysql_prepare_insert_check_table())
- setup_fields() now takes an enum instead of an int for marking columns
usage.
- For internal temporary tables, use handler::write_row(),
handler::delete_row() and handler::update_row() instead of
handler::ha_xxxx() for faster execution.
- Changed some constants to enum's and define's.
- Using separate column read and write sets allows for easier checking
of timestamp field was set by statement.
- Remove calls to free_io_cache() as this is now done automaticly in ha_reset()
- Don't build table->normalized_path as this is now identical to table->path
(after bar's fixes to convert filenames)
- Fixed some missed DBUG_PRINT(.."%lx") to use "0x%lx" to make it easier to
do comparision with the 'convert-dbug-for-diff' tool.
Things left to do in 5.1:
- We wrongly log failed CREATE TABLE ... SELECT in some cases when using
row based logging (as shown by testcase binlog_row_mix_innodb_myisam.result)
Mats has promised to look into this.
- Test that my fix for CREATE TABLE ... SELECT is indeed correct.
(I added several test cases for this, but in this case it's better that
someone else also tests this throughly).
Lars has promosed to do this.
2006-06-04 17:52:22 +02:00
show warnings;
Level Code Message
Note 1050 Table 't1' already exists
2007-06-06 19:57:07 +02:00
Error 1062 Duplicate entry '3' for key 'PRIMARY'
This changeset is largely a handler cleanup changeset (WL#3281), but includes fixes and cleanups that was found necessary while testing the handler changes
Changes that requires code changes in other code of other storage engines.
(Note that all changes are very straightforward and one should find all issues
by compiling a --debug build and fixing all compiler errors and all
asserts in field.cc while running the test suite),
- New optional handler function introduced: reset()
This is called after every DML statement to make it easy for a handler to
statement specific cleanups.
(The only case it's not called is if force the file to be closed)
- handler::extra(HA_EXTRA_RESET) is removed. Code that was there before
should be moved to handler::reset()
- table->read_set contains a bitmap over all columns that are needed
in the query. read_row() and similar functions only needs to read these
columns
- table->write_set contains a bitmap over all columns that will be updated
in the query. write_row() and update_row() only needs to update these
columns.
The above bitmaps should now be up to date in all context
(including ALTER TABLE, filesort()).
The handler is informed of any changes to the bitmap after
fix_fields() by calling the virtual function
handler::column_bitmaps_signal(). If the handler does caching of
these bitmaps (instead of using table->read_set, table->write_set),
it should redo the caching in this code. as the signal() may be sent
several times, it's probably best to set a variable in the signal
and redo the caching on read_row() / write_row() if the variable was
set.
- Removed the read_set and write_set bitmap objects from the handler class
- Removed all column bit handling functions from the handler class.
(Now one instead uses the normal bitmap functions in my_bitmap.c instead
of handler dedicated bitmap functions)
- field->query_id is removed. One should instead instead check
table->read_set and table->write_set if a field is used in the query.
- handler::extra(HA_EXTRA_RETRIVE_ALL_COLS) and
handler::extra(HA_EXTRA_RETRIEVE_PRIMARY_KEY) are removed. One should now
instead use table->read_set to check for which columns to retrieve.
- If a handler needs to call Field->val() or Field->store() on columns
that are not used in the query, one should install a temporary
all-columns-used map while doing so. For this, we provide the following
functions:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->read_set);
field->val();
dbug_tmp_restore_column_map(table->read_set, old_map);
and similar for the write map:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->write_set);
field->val();
dbug_tmp_restore_column_map(table->write_set, old_map);
If this is not done, you will sooner or later hit a DBUG_ASSERT
in the field store() / val() functions.
(For not DBUG binaries, the dbug_tmp_restore_column_map() and
dbug_tmp_restore_column_map() are inline dummy functions and should
be optimized away be the compiler).
- If one needs to temporary set the column map for all binaries (and not
just to avoid the DBUG_ASSERT() in the Field::store() / Field::val()
methods) one should use the functions tmp_use_all_columns() and
tmp_restore_column_map() instead of the above dbug_ variants.
- All 'status' fields in the handler base class (like records,
data_file_length etc) are now stored in a 'stats' struct. This makes
it easier to know what status variables are provided by the base
handler. This requires some trivial variable names in the extra()
function.
- New virtual function handler::records(). This is called to optimize
COUNT(*) if (handler::table_flags() & HA_HAS_RECORDS()) is true.
(stats.records is not supposed to be an exact value. It's only has to
be 'reasonable enough' for the optimizer to be able to choose a good
optimization path).
- Non virtual handler::init() function added for caching of virtual
constants from engine.
- Removed has_transactions() virtual method. Now one should instead return
HA_NO_TRANSACTIONS in table_flags() if the table handler DOES NOT support
transactions.
- The 'xxxx_create_handler()' function now has a MEM_ROOT_root argument
that is to be used with 'new handler_name()' to allocate the handler
in the right area. The xxxx_create_handler() function is also
responsible for any initialization of the object before returning.
For example, one should change:
static handler *myisam_create_handler(TABLE_SHARE *table)
{
return new ha_myisam(table);
}
->
static handler *myisam_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
{
return new (mem_root) ha_myisam(table);
}
- New optional virtual function: use_hidden_primary_key().
This is called in case of an update/delete when
(table_flags() and HA_PRIMARY_KEY_REQUIRED_FOR_DELETE) is defined
but we don't have a primary key. This allows the handler to take precisions
in remembering any hidden primary key to able to update/delete any
found row. The default handler marks all columns to be read.
- handler::table_flags() now returns a ulonglong (to allow for more flags).
- New/changed table_flags()
- HA_HAS_RECORDS Set if ::records() is supported
- HA_NO_TRANSACTIONS Set if engine doesn't support transactions
- HA_PRIMARY_KEY_REQUIRED_FOR_DELETE
Set if we should mark all primary key columns for
read when reading rows as part of a DELETE
statement. If there is no primary key,
all columns are marked for read.
- HA_PARTIAL_COLUMN_READ Set if engine will not read all columns in some
cases (based on table->read_set)
- HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS
Renamed to HA_PRIMARY_KEY_REQUIRED_FOR_POSITION.
- HA_DUPP_POS Renamed to HA_DUPLICATE_POS
- HA_REQUIRES_KEY_COLUMNS_FOR_DELETE
Set this if we should mark ALL key columns for
read when when reading rows as part of a DELETE
statement. In case of an update we will mark
all keys for read for which key part changed
value.
- HA_STATS_RECORDS_IS_EXACT
Set this if stats.records is exact.
(This saves us some extra records() calls
when optimizing COUNT(*))
- Removed table_flags()
- HA_NOT_EXACT_COUNT Now one should instead use HA_HAS_RECORDS if
handler::records() gives an exact count() and
HA_STATS_RECORDS_IS_EXACT if stats.records is exact.
- HA_READ_RND_SAME Removed (no one supported this one)
- Removed not needed functions ha_retrieve_all_cols() and ha_retrieve_all_pk()
- Renamed handler::dupp_pos to handler::dup_pos
- Removed not used variable handler::sortkey
Upper level handler changes:
- ha_reset() now does some overall checks and calls ::reset()
- ha_table_flags() added. This is a cached version of table_flags(). The
cache is updated on engine creation time and updated on open.
MySQL level changes (not obvious from the above):
- DBUG_ASSERT() added to check that column usage matches what is set
in the column usage bit maps. (This found a LOT of bugs in current
column marking code).
- In 5.1 before, all used columns was marked in read_set and only updated
columns was marked in write_set. Now we only mark columns for which we
need a value in read_set.
- Column bitmaps are created in open_binary_frm() and open_table_from_share().
(Before this was in table.cc)
- handler::table_flags() calls are replaced with handler::ha_table_flags()
- For calling field->val() you must have the corresponding bit set in
table->read_set. For calling field->store() you must have the
corresponding bit set in table->write_set. (There are asserts in
all store()/val() functions to catch wrong usage)
- thd->set_query_id is renamed to thd->mark_used_columns and instead
of setting this to an integer value, this has now the values:
MARK_COLUMNS_NONE, MARK_COLUMNS_READ, MARK_COLUMNS_WRITE
Changed also all variables named 'set_query_id' to mark_used_columns.
- In filesort() we now inform the handler of exactly which columns are needed
doing the sort and choosing the rows.
- The TABLE_SHARE object has a 'all_set' column bitmap one can use
when one needs a column bitmap with all columns set.
(This is used for table->use_all_columns() and other places)
- The TABLE object has 3 column bitmaps:
- def_read_set Default bitmap for columns to be read
- def_write_set Default bitmap for columns to be written
- tmp_set Can be used as a temporary bitmap when needed.
The table object has also two pointer to bitmaps read_set and write_set
that the handler should use to find out which columns are used in which way.
- count() optimization now calls handler::records() instead of using
handler->stats.records (if (table_flags() & HA_HAS_RECORDS) is true).
- Added extra argument to Item::walk() to indicate if we should also
traverse sub queries.
- Added TABLE parameter to cp_buffer_from_ref()
- Don't close tables created with CREATE ... SELECT but keep them in
the table cache. (Faster usage of newly created tables).
New interfaces:
- table->clear_column_bitmaps() to initialize the bitmaps for tables
at start of new statements.
- table->column_bitmaps_set() to set up new column bitmaps and signal
the handler about this.
- table->column_bitmaps_set_no_signal() for some few cases where we need
to setup new column bitmaps but don't signal the handler (as the handler
has already been signaled about these before). Used for the momement
only in opt_range.cc when doing ROR scans.
- table->use_all_columns() to install a bitmap where all columns are marked
as use in the read and the write set.
- table->default_column_bitmaps() to install the normal read and write
column bitmaps, but not signaling the handler about this.
This is mainly used when creating TABLE instances.
- table->mark_columns_needed_for_delete(),
table->mark_columns_needed_for_delete() and
table->mark_columns_needed_for_insert() to allow us to put additional
columns in column usage maps if handler so requires.
(The handler indicates what it neads in handler->table_flags())
- table->prepare_for_position() to allow us to tell handler that it
needs to read primary key parts to be able to store them in
future table->position() calls.
(This replaces the table->file->ha_retrieve_all_pk function)
- table->mark_auto_increment_column() to tell handler are going to update
columns part of any auto_increment key.
- table->mark_columns_used_by_index() to mark all columns that is part of
an index. It will also send extra(HA_EXTRA_KEYREAD) to handler to allow
it to quickly know that it only needs to read colums that are part
of the key. (The handler can also use the column map for detecting this,
but simpler/faster handler can just monitor the extra() call).
- table->mark_columns_used_by_index_no_reset() to in addition to other columns,
also mark all columns that is used by the given key.
- table->restore_column_maps_after_mark_index() to restore to default
column maps after a call to table->mark_columns_used_by_index().
- New item function register_field_in_read_map(), for marking used columns
in table->read_map. Used by filesort() to mark all used columns
- Maintain in TABLE->merge_keys set of all keys that are used in query.
(Simplices some optimization loops)
- Maintain Field->part_of_key_not_clustered which is like Field->part_of_key
but the field in the clustered key is not assumed to be part of all index.
(used in opt_range.cc for faster loops)
- dbug_tmp_use_all_columns(), dbug_tmp_restore_column_map()
tmp_use_all_columns() and tmp_restore_column_map() functions to temporally
mark all columns as usable. The 'dbug_' version is primarily intended
inside a handler when it wants to just call Field:store() & Field::val()
functions, but don't need the column maps set for any other usage.
(ie:: bitmap_is_set() is never called)
- We can't use compare_records() to skip updates for handlers that returns
a partial column set and the read_set doesn't cover all columns in the
write set. The reason for this is that if we have a column marked only for
write we can't in the MySQL level know if the value changed or not.
The reason this worked before was that MySQL marked all to be written
columns as also to be read. The new 'optimal' bitmaps exposed this 'hidden
bug'.
- open_table_from_share() does not anymore setup temporary MEM_ROOT
object as a thread specific variable for the handler. Instead we
send the to-be-used MEMROOT to get_new_handler().
(Simpler, faster code)
Bugs fixed:
- Column marking was not done correctly in a lot of cases.
(ALTER TABLE, when using triggers, auto_increment fields etc)
(Could potentially result in wrong values inserted in table handlers
relying on that the old column maps or field->set_query_id was correct)
Especially when it comes to triggers, there may be cases where the
old code would cause lost/wrong values for NDB and/or InnoDB tables.
- Split thd->options flag OPTION_STATUS_NO_TRANS_UPDATE to two flags:
OPTION_STATUS_NO_TRANS_UPDATE and OPTION_KEEP_LOG.
This allowed me to remove some wrong warnings about:
"Some non-transactional changed tables couldn't be rolled back"
- Fixed handling of INSERT .. SELECT and CREATE ... SELECT that wrongly reset
(thd->options & OPTION_STATUS_NO_TRANS_UPDATE) which caused us to loose
some warnings about
"Some non-transactional changed tables couldn't be rolled back")
- Fixed use of uninitialized memory in ha_ndbcluster.cc::delete_table()
which could cause delete_table to report random failures.
- Fixed core dumps for some tests when running with --debug
- Added missing FN_LIBCHAR in mysql_rm_tmp_tables()
(This has probably caused us to not properly remove temporary files after
crash)
- slow_logs was not properly initialized, which could maybe cause
extra/lost entries in slow log.
- If we get an duplicate row on insert, change column map to read and
write all columns while retrying the operation. This is required by
the definition of REPLACE and also ensures that fields that are only
part of UPDATE are properly handled. This fixed a bug in NDB and
REPLACE where REPLACE wrongly copied some column values from the replaced
row.
- For table handler that doesn't support NULL in keys, we would give an error
when creating a primary key with NULL fields, even after the fields has been
automaticly converted to NOT NULL.
- Creating a primary key on a SPATIAL key, would fail if field was not
declared as NOT NULL.
Cleanups:
- Removed not used condition argument to setup_tables
- Removed not needed item function reset_query_id_processor().
- Field->add_index is removed. Now this is instead maintained in
(field->flags & FIELD_IN_ADD_INDEX)
- Field->fieldnr is removed (use field->field_index instead)
- New argument to filesort() to indicate that it should return a set of
row pointers (not used columns). This allowed me to remove some references
to sql_command in filesort and should also enable us to return column
results in some cases where we couldn't before.
- Changed column bitmap handling in opt_range.cc to be aligned with TABLE
bitmap, which allowed me to use bitmap functions instead of looping over
all fields to create some needed bitmaps. (Faster and smaller code)
- Broke up found too long lines
- Moved some variable declaration at start of function for better code
readability.
- Removed some not used arguments from functions.
(setup_fields(), mysql_prepare_insert_check_table())
- setup_fields() now takes an enum instead of an int for marking columns
usage.
- For internal temporary tables, use handler::write_row(),
handler::delete_row() and handler::update_row() instead of
handler::ha_xxxx() for faster execution.
- Changed some constants to enum's and define's.
- Using separate column read and write sets allows for easier checking
of timestamp field was set by statement.
- Remove calls to free_io_cache() as this is now done automaticly in ha_reset()
- Don't build table->normalized_path as this is now identical to table->path
(after bar's fixes to convert filenames)
- Fixed some missed DBUG_PRINT(.."%lx") to use "0x%lx" to make it easier to
do comparision with the 'convert-dbug-for-diff' tool.
Things left to do in 5.1:
- We wrongly log failed CREATE TABLE ... SELECT in some cases when using
row based logging (as shown by testcase binlog_row_mix_innodb_myisam.result)
Mats has promised to look into this.
- Test that my fix for CREATE TABLE ... SELECT is indeed correct.
(I added several test cases for this, but in this case it's better that
someone else also tests this throughly).
Lars has promosed to do this.
2006-06-04 17:52:22 +02:00
show status like "Opened_tables";
Variable_name Value
Opened_tables 2
2003-10-15 20:41:13 +02:00
select * from t1;
a b
1 1
0 2
3 4
drop table t1;
2004-03-05 19:13:33 +01:00
create table `t1 `(a int);
2004-03-17 23:09:13 +01:00
ERROR 42000: Incorrect table name 't1 '
2004-03-05 19:13:33 +01:00
create database `db1 `;
2004-03-17 23:09:13 +01:00
ERROR 42000: Incorrect database name 'db1 '
2004-03-05 19:13:33 +01:00
create table t1(`a ` int);
2004-03-17 23:09:13 +01:00
ERROR 42000: Incorrect column name 'a '
2004-04-28 17:14:53 +02:00
create table t1 (a int,);
2004-06-16 05:18:20 +02:00
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
2004-04-28 17:14:53 +02:00
create table t1 (a int,,b int);
2004-06-16 05:18:20 +02:00
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b int)' at line 1
2004-04-28 17:14:53 +02:00
create table t1 (,b int);
2004-06-16 05:18:20 +02:00
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b int)' at line 1
2002-11-18 17:28:51 +01:00
create table t1 (a int, key(a));
create table t2 (b int, foreign key(b) references t1(a), key(b));
drop table if exists t1,t2;
2002-12-28 10:38:29 +01:00
create table t1(id int not null, name char(20));
insert into t1 values(10,'mysql'),(20,'monty- the creator');
create table t2(id int not null);
insert into t2 values(10),(20);
create table t3 like t1;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
2004-10-02 21:20:08 +02:00
`id` int(11) NOT NULL,
2006-02-22 10:09:59 +01:00
`name` char(20) DEFAULT NULL
2003-12-10 05:31:42 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2002-12-28 10:38:29 +01:00
select * from t3;
id name
create table if not exists t3 like t1;
Warnings:
2004-09-09 05:59:26 +02:00
Note 1050 Table 't3' already exists
2002-12-28 10:38:29 +01:00
select @@warning_count;
@@warning_count
1
create temporary table t3 like t2;
show create table t3;
Table Create Table
t3 CREATE TEMPORARY TABLE `t3` (
2004-10-02 21:20:08 +02:00
`id` int(11) NOT NULL
2003-12-10 05:31:42 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2002-12-28 10:38:29 +01:00
select * from t3;
id
drop table t3;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
2004-10-02 21:20:08 +02:00
`id` int(11) NOT NULL,
2006-02-22 10:09:59 +01:00
`name` char(20) DEFAULT NULL
2003-12-10 05:31:42 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2002-12-28 10:38:29 +01:00
select * from t3;
id name
2002-12-31 00:10:10 +01:00
drop table t2, t3;
2004-08-31 13:35:04 +02:00
create database mysqltest;
create table mysqltest.t3 like t1;
create temporary table t3 like mysqltest.t3;
2002-12-28 10:38:29 +01:00
show create table t3;
Table Create Table
t3 CREATE TEMPORARY TABLE `t3` (
2004-10-02 21:20:08 +02:00
`id` int(11) NOT NULL,
2006-02-22 10:09:59 +01:00
`name` char(20) DEFAULT NULL
2003-12-10 05:31:42 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2002-12-31 00:10:10 +01:00
create table t2 like t3;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
2004-10-02 21:20:08 +02:00
`id` int(11) NOT NULL,
2006-02-22 10:09:59 +01:00
`name` char(20) DEFAULT NULL
2003-12-10 05:31:42 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2002-12-31 00:10:10 +01:00
select * from t2;
id name
2002-12-28 10:38:29 +01:00
create table t3 like t1;
2004-08-31 13:35:04 +02:00
create table t3 like mysqltest.t3;
2003-06-04 17:28:51 +02:00
ERROR 42S01: Table 't3' already exists
2002-12-28 10:38:29 +01:00
create table non_existing_database.t1 like t1;
2005-07-22 05:08:54 +02:00
ERROR 42000: Unknown database 'non_existing_database'
2002-12-28 10:38:29 +01:00
create table t3 like non_existing_table;
2007-05-23 13:26:16 +02:00
ERROR 42S02: Table 'test.non_existing_table' doesn't exist
2002-12-28 10:38:29 +01:00
create temporary table t3 like t1;
2003-06-04 17:28:51 +02:00
ERROR 42S01: Table 't3' already exists
2002-12-28 10:38:29 +01:00
drop table t1, t2, t3;
drop table t3;
2004-08-31 13:35:04 +02:00
drop database mysqltest;
2010-06-11 10:14:38 +02:00
create table t1 (i int);
create table t2 (j int);
lock tables t1 read;
create table t3 like t1;
ERROR HY000: Table 't3' was not locked with LOCK TABLES
create temporary table t3 like t1;
drop temporary table t3;
create temporary table t3 like t2;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
unlock tables;
drop tables t1, t2;
2003-12-17 23:52:03 +01:00
SET SESSION storage_engine="heap";
SELECT @@storage_engine;
@@storage_engine
2005-04-23 00:05:05 +02:00
MEMORY
2003-03-19 20:43:41 +01:00
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2004-10-02 21:20:08 +02:00
`a` int(11) NOT NULL
2005-01-14 02:38:13 +01:00
) ENGINE=MEMORY DEFAULT CHARSET=latin1
2003-03-19 20:43:41 +01:00
drop table t1;
2003-12-17 23:52:03 +01:00
SET SESSION storage_engine="gemini";
2009-12-22 12:02:52 +01:00
ERROR 42000: Unknown storage engine 'gemini'
2003-12-17 23:52:03 +01:00
SELECT @@storage_engine;
@@storage_engine
2005-04-23 00:05:05 +02:00
MEMORY
2003-03-19 20:43:41 +01:00
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2004-10-02 21:20:08 +02:00
`a` int(11) NOT NULL
2005-01-14 02:38:13 +01:00
) ENGINE=MEMORY DEFAULT CHARSET=latin1
2003-12-17 23:52:03 +01:00
SET SESSION storage_engine=default;
2003-03-19 20:43:41 +01:00
drop table t1;
2003-08-28 01:11:54 +02:00
create table t1(a int,b int,c int unsigned,d date,e char,f datetime,g time,h blob);
insert into t1(a)values(1);
insert into t1(a,b,c,d,e,f,g,h)
values(2,-2,2,'1825-12-14','a','2003-1-1 3:2:1','4:3:2','binary data');
select * from t1;
a b c d e f g h
1 NULL NULL NULL NULL NULL NULL NULL
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data
select a,
ifnull(b,cast(-7 as signed)) as b,
ifnull(c,cast(7 as unsigned)) as c,
ifnull(d,cast('2000-01-01' as date)) as d,
ifnull(e,cast('b' as char)) as e,
ifnull(f,cast('2000-01-01' as datetime)) as f,
ifnull(g,cast('5:4:3' as time)) as g,
ifnull(h,cast('yet another binary data' as binary)) as h,
addtime(cast('1:0:0' as time),cast('1:0:0' as time)) as dd
from t1;
a b c d e f g h dd
1 -7 7 2000-01-01 b 2000-01-01 00:00:00 05:04:03 yet another binary data 02:00:00
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data 02:00:00
create table t2
select
a,
ifnull(b,cast(-7 as signed)) as b,
ifnull(c,cast(7 as unsigned)) as c,
ifnull(d,cast('2000-01-01' as date)) as d,
ifnull(e,cast('b' as char)) as e,
ifnull(f,cast('2000-01-01' as datetime)) as f,
ifnull(g,cast('5:4:3' as time)) as g,
ifnull(h,cast('yet another binary data' as binary)) as h,
addtime(cast('1:0:0' as time),cast('1:0:0' as time)) as dd
from t1;
explain t2;
Field Type Null Key Default Extra
a int(11) YES NULL
2004-12-10 10:07:11 +01:00
b bigint(11) NO 0
WL#2649 Number-to-string conversions
added:
include/ctype_numconv.inc
mysql-test/include/ctype_numconv.inc
mysql-test/r/ctype_binary.result
mysql-test/t/ctype_binary.test
Adding tests
modified:
mysql-test/r/bigint.result
mysql-test/r/case.result
mysql-test/r/create.result
mysql-test/r/ctype_cp1251.result
mysql-test/r/ctype_latin1.result
mysql-test/r/ctype_ucs.result
mysql-test/r/func_gconcat.result
mysql-test/r/func_str.result
mysql-test/r/metadata.result
mysql-test/r/ps_1general.result
mysql-test/r/ps_2myisam.result
mysql-test/r/ps_3innodb.result
mysql-test/r/ps_4heap.result
mysql-test/r/ps_5merge.result
mysql-test/r/show_check.result
mysql-test/r/type_datetime.result
mysql-test/r/type_ranges.result
mysql-test/r/union.result
mysql-test/suite/ndb/r/ps_7ndb.result
mysql-test/t/ctype_cp1251.test
mysql-test/t/ctype_latin1.test
mysql-test/t/ctype_ucs.test
mysql-test/t/func_str.test
Fixing tests
@ sql/field.cc
- Return str result using my_charset_numeric.
- Using real multi-byte aware str_to_XXX functions
to handle tricky charset values propely (e.g. UCS2)
@ sql/field.h
- Changing derivation of non-string field types to DERIVATION_NUMERIC.
- Changing binary() for numeric/datetime fields to always
return TRUE even if charset is not my_charset_bin. We need
this to keep ha_base_keytype() return HA_KEYTYPE_BINARY.
- Adding BINARY_FLAG into some fields, because it's not
being set automatically anymore with
"my_charset_bin to my_charset_numeric" change.
- Changing derivation for numeric/datetime datatypes to a weaker
value, to make "SELECT concat('string', field)" use character
set of the string literal for the result of the function.
@ sql/item.cc
- Implementing generic val_str_ascii().
- Using max_char_length() instead of direct read of max_length
to make "tricky" charsets like UCS2 work.
NOTE: in the future we'll possibly remove all direct reads of max_length
- Fixing Item_num::safe_charset_converter().
Previously it alligned binary string to
character string (for example by adding leading 0x00
when doing binary->UCS2 conversion). Now it just
converts from my_charset_numbner to "tocs".
- Using val_str_ascii() in Item::get_time() to make UCS2 arguments work.
- Other misc changes
@ sql/item.h
- Changing MY_COLL_CMP_CONV and MY_COLL_ALLOW_CONV to
bit operations instead of hard-coded bit masks.
- Addding new method DTCollation.set_numeric().
- Adding new methods to Item.
- Adding helper functions to make code look nicer:
agg_item_charsets_for_string_result()
agg_item_charsets_for_comparison()
- Changing charset for Item_num-derived items
from my_charset_bin to my_charset_numeric
(which is an alias for latin1).
@ sql/item_cmpfunc.cc
- Using new helper functions
- Other misc changes
@ sql/item_cmpfunc.h
- Fixing strcmp() to return max_length=2.
Previously it returned 1, which was wrong,
because it did not fit '-1'.
@ sql/item_func.cc
- Using new helper functions
- Other minor changes
@ sql/item_func.h
- Removing unused functions
- Adding helper functions
agg_arg_charsets_for_string_result()
agg_arg_charsets_for_comparison()
- Adding set_numeric() into constructors of numeric items.
- Using fix_length_and_charset() and fix_char_length()
instead of direct write to max_length.
@ sql/item_geofunc.cc
- Changing class for Item_func_geometry_type and
Item_func_as_wkt from Item_str_func to
Item_str_ascii_func, to make them return UCS2 result
properly (when character_set_connection=ucs2).
@ sql/item_geofunc.h
- Changing class for Item_func_geometry_type and
Item_func_as_wkt from Item_str_func to
Item_str_ascii_func, to make them return UCS2 result
properly (when @@character_set_connection=ucs2).
@ sql/item_strfunc.cc
- Implementing Item_str_func::val_str().
- Renaming val_str to val_str_ascii for some items,
to make them work with UCS2 properly.
- Using new helper functions
- All single-argument functions that expect string
result now call this method:
agg_arg_charsets_for_string_result(collation, args, 1);
This enables character set conversion to @@character_set_connection
in case of pure numeric input.
@ sql/item_strfunc.h
- Introducing Item_str_ascii_func - for functions
which return pure ASCII data, for performance purposes,
as well as for the cases when the old implementation
of val_str() was heavily 8-bit oriented and implementing
a UCS2-aware version is tricky.
@ sql/item_sum.cc
- Using new helper functions.
@ sql/item_timefunc.cc
- Using my_charset_numeric instead of my_charset_bin.
- Using fix_char_length(), fix_length_and_charset()
and fix_length_and_charset_datetime()
instead of direct write to max_length.
- Using tricky-charset aware function str_to_time_with_warn()
@ sql/item_timefunc.h
- Using new helper functions for charset and length initialization.
- Changing base class for Item_func_get_format() to make
it return UCS2 properly (when character_set_connection=ucs2).
@ sql/item_xmlfunc.cc
- Using new helper function
@ sql/my_decimal.cc
- Adding a new DECIMAL to CHAR converter
with real multibyte support (e.g. UCS2)
@ sql/mysql_priv.h
- Introducing a new derivation level for numeric/datetime data types.
- Adding macros for my_charset_numeric and MY_REPERTOIRE_NUMERIC.
- Adding prototypes for str_set_decimal()
- Adding prototypes for character-set aware str_to_xxx() functions.
@ sql/protocol.cc
- Changing charsetnr to "binary" client-side metadata for
numeric/datetime data types.
@ sql/time.cc
- Adding to_ascii() helper function, to convert a string
in any character set to ascii representation. In the
future can be extended to understand digits written
in various non-Latin word scripts.
- Adding real multy-byte character set aware versions for str_to_XXXX,
to make these these type of queries work correct:
INSERT INTO t1 SET datetime_column=ucs2_expression;
@ strings/ctype-ucs2.c
- endptr was not calculated correctly. INSERTing of UCS2
values into numeric columns returned warnings about
truncated wrong data.
2010-02-11 05:17:25 +01:00
c bigint(10) unsigned NO 0
2004-03-09 21:03:01 +01:00
d date YES NULL
2004-12-10 10:07:11 +01:00
e varchar(1) NO
2004-03-09 21:03:01 +01:00
f datetime YES NULL
g time YES NULL
2007-09-20 10:54:46 +02:00
h longblob NO NULL
2004-03-09 21:03:01 +01:00
dd time YES NULL
2003-08-28 01:11:54 +02:00
select * from t2;
a b c d e f g h dd
1 -7 7 2000-01-01 b 2000-01-01 00:00:00 05:04:03 yet another binary data 02:00:00
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data 02:00:00
drop table t1, t2;
2003-12-15 16:58:15 +01:00
create table t1 (a tinyint, b smallint, c mediumint, d int, e bigint, f float(3,2), g double(4,3), h decimal(5,4), i year, j date, k timestamp, l datetime, m enum('a','b'), n set('a','b'), o char(10));
create table t2 select ifnull(a,a), ifnull(b,b), ifnull(c,c), ifnull(d,d), ifnull(e,e), ifnull(f,f), ifnull(g,g), ifnull(h,h), ifnull(i,i), ifnull(j,j), ifnull(k,k), ifnull(l,l), ifnull(m,m), ifnull(n,n), ifnull(o,o) from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
2007-03-22 22:04:31 +01:00
`ifnull(a,a)` tinyint(4) DEFAULT NULL,
`ifnull(b,b)` smallint(6) DEFAULT NULL,
WL#2649 Number-to-string conversions
added:
include/ctype_numconv.inc
mysql-test/include/ctype_numconv.inc
mysql-test/r/ctype_binary.result
mysql-test/t/ctype_binary.test
Adding tests
modified:
mysql-test/r/bigint.result
mysql-test/r/case.result
mysql-test/r/create.result
mysql-test/r/ctype_cp1251.result
mysql-test/r/ctype_latin1.result
mysql-test/r/ctype_ucs.result
mysql-test/r/func_gconcat.result
mysql-test/r/func_str.result
mysql-test/r/metadata.result
mysql-test/r/ps_1general.result
mysql-test/r/ps_2myisam.result
mysql-test/r/ps_3innodb.result
mysql-test/r/ps_4heap.result
mysql-test/r/ps_5merge.result
mysql-test/r/show_check.result
mysql-test/r/type_datetime.result
mysql-test/r/type_ranges.result
mysql-test/r/union.result
mysql-test/suite/ndb/r/ps_7ndb.result
mysql-test/t/ctype_cp1251.test
mysql-test/t/ctype_latin1.test
mysql-test/t/ctype_ucs.test
mysql-test/t/func_str.test
Fixing tests
@ sql/field.cc
- Return str result using my_charset_numeric.
- Using real multi-byte aware str_to_XXX functions
to handle tricky charset values propely (e.g. UCS2)
@ sql/field.h
- Changing derivation of non-string field types to DERIVATION_NUMERIC.
- Changing binary() for numeric/datetime fields to always
return TRUE even if charset is not my_charset_bin. We need
this to keep ha_base_keytype() return HA_KEYTYPE_BINARY.
- Adding BINARY_FLAG into some fields, because it's not
being set automatically anymore with
"my_charset_bin to my_charset_numeric" change.
- Changing derivation for numeric/datetime datatypes to a weaker
value, to make "SELECT concat('string', field)" use character
set of the string literal for the result of the function.
@ sql/item.cc
- Implementing generic val_str_ascii().
- Using max_char_length() instead of direct read of max_length
to make "tricky" charsets like UCS2 work.
NOTE: in the future we'll possibly remove all direct reads of max_length
- Fixing Item_num::safe_charset_converter().
Previously it alligned binary string to
character string (for example by adding leading 0x00
when doing binary->UCS2 conversion). Now it just
converts from my_charset_numbner to "tocs".
- Using val_str_ascii() in Item::get_time() to make UCS2 arguments work.
- Other misc changes
@ sql/item.h
- Changing MY_COLL_CMP_CONV and MY_COLL_ALLOW_CONV to
bit operations instead of hard-coded bit masks.
- Addding new method DTCollation.set_numeric().
- Adding new methods to Item.
- Adding helper functions to make code look nicer:
agg_item_charsets_for_string_result()
agg_item_charsets_for_comparison()
- Changing charset for Item_num-derived items
from my_charset_bin to my_charset_numeric
(which is an alias for latin1).
@ sql/item_cmpfunc.cc
- Using new helper functions
- Other misc changes
@ sql/item_cmpfunc.h
- Fixing strcmp() to return max_length=2.
Previously it returned 1, which was wrong,
because it did not fit '-1'.
@ sql/item_func.cc
- Using new helper functions
- Other minor changes
@ sql/item_func.h
- Removing unused functions
- Adding helper functions
agg_arg_charsets_for_string_result()
agg_arg_charsets_for_comparison()
- Adding set_numeric() into constructors of numeric items.
- Using fix_length_and_charset() and fix_char_length()
instead of direct write to max_length.
@ sql/item_geofunc.cc
- Changing class for Item_func_geometry_type and
Item_func_as_wkt from Item_str_func to
Item_str_ascii_func, to make them return UCS2 result
properly (when character_set_connection=ucs2).
@ sql/item_geofunc.h
- Changing class for Item_func_geometry_type and
Item_func_as_wkt from Item_str_func to
Item_str_ascii_func, to make them return UCS2 result
properly (when @@character_set_connection=ucs2).
@ sql/item_strfunc.cc
- Implementing Item_str_func::val_str().
- Renaming val_str to val_str_ascii for some items,
to make them work with UCS2 properly.
- Using new helper functions
- All single-argument functions that expect string
result now call this method:
agg_arg_charsets_for_string_result(collation, args, 1);
This enables character set conversion to @@character_set_connection
in case of pure numeric input.
@ sql/item_strfunc.h
- Introducing Item_str_ascii_func - for functions
which return pure ASCII data, for performance purposes,
as well as for the cases when the old implementation
of val_str() was heavily 8-bit oriented and implementing
a UCS2-aware version is tricky.
@ sql/item_sum.cc
- Using new helper functions.
@ sql/item_timefunc.cc
- Using my_charset_numeric instead of my_charset_bin.
- Using fix_char_length(), fix_length_and_charset()
and fix_length_and_charset_datetime()
instead of direct write to max_length.
- Using tricky-charset aware function str_to_time_with_warn()
@ sql/item_timefunc.h
- Using new helper functions for charset and length initialization.
- Changing base class for Item_func_get_format() to make
it return UCS2 properly (when character_set_connection=ucs2).
@ sql/item_xmlfunc.cc
- Using new helper function
@ sql/my_decimal.cc
- Adding a new DECIMAL to CHAR converter
with real multibyte support (e.g. UCS2)
@ sql/mysql_priv.h
- Introducing a new derivation level for numeric/datetime data types.
- Adding macros for my_charset_numeric and MY_REPERTOIRE_NUMERIC.
- Adding prototypes for str_set_decimal()
- Adding prototypes for character-set aware str_to_xxx() functions.
@ sql/protocol.cc
- Changing charsetnr to "binary" client-side metadata for
numeric/datetime data types.
@ sql/time.cc
- Adding to_ascii() helper function, to convert a string
in any character set to ascii representation. In the
future can be extended to understand digits written
in various non-Latin word scripts.
- Adding real multy-byte character set aware versions for str_to_XXXX,
to make these these type of queries work correct:
INSERT INTO t1 SET datetime_column=ucs2_expression;
@ strings/ctype-ucs2.c
- endptr was not calculated correctly. INSERTing of UCS2
values into numeric columns returned warnings about
truncated wrong data.
2010-02-11 05:17:25 +01:00
`ifnull(c,c)` mediumint(9) DEFAULT NULL,
2007-03-22 22:04:31 +01:00
`ifnull(d,d)` int(11) DEFAULT NULL,
`ifnull(e,e)` bigint(20) DEFAULT NULL,
`ifnull(f,f)` float(3,2) DEFAULT NULL,
`ifnull(g,g)` double(4,3) DEFAULT NULL,
`ifnull(h,h)` decimal(5,4) DEFAULT NULL,
`ifnull(i,i)` year(4) DEFAULT NULL,
`ifnull(j,j)` date DEFAULT NULL,
`ifnull(k,k)` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`ifnull(l,l)` datetime DEFAULT NULL,
`ifnull(m,m)` varchar(1) DEFAULT NULL,
`ifnull(n,n)` varchar(3) DEFAULT NULL,
`ifnull(o,o)` varchar(10) DEFAULT NULL
2003-12-15 18:10:46 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2003-12-15 16:58:15 +01:00
drop table t1,t2;
2003-10-31 21:24:55 +01:00
create table t1(str varchar(10) default 'def',strnull varchar(10),intg int default '10',rel double default '3.14');
insert into t1 values ('','',0,0.0);
describe t1;
Field Type Null Key Default Extra
str varchar(10) YES def
strnull varchar(10) YES NULL
intg int(11) YES 10
rel double YES 3.14
create table t2 select default(str) as str, default(strnull) as strnull, default(intg) as intg, default(rel) as rel from t1;
describe t2;
Field Type Null Key Default Extra
str varchar(10) YES NULL
strnull varchar(10) YES NULL
intg int(11) YES NULL
rel double YES NULL
drop table t1, t2;
2003-12-11 01:28:25 +01:00
create table t1(name varchar(10), age smallint default -1);
describe t1;
Field Type Null Key Default Extra
name varchar(10) YES NULL
age smallint(6) YES -1
create table t2(name varchar(10), age smallint default - 1);
describe t2;
Field Type Null Key Default Extra
name varchar(10) YES NULL
age smallint(6) YES -1
drop table t1, t2;
2004-03-13 20:13:31 +01:00
create table t1(cenum enum('a'), cset set('b'));
create table t2(cenum enum('a','a'), cset set('b','b'));
Warnings:
2004-03-15 11:53:27 +01:00
Note 1291 Column 'cenum' has duplicated value 'a' in ENUM
Note 1291 Column 'cset' has duplicated value 'b' in SET
2004-03-13 20:13:31 +01:00
create table t3(cenum enum('a','A','a','c','c'), cset set('b','B','b','d','d'));
Warnings:
2004-03-15 11:53:27 +01:00
Note 1291 Column 'cenum' has duplicated value 'a' in ENUM
Note 1291 Column 'cenum' has duplicated value 'A' in ENUM
Note 1291 Column 'cenum' has duplicated value 'c' in ENUM
Note 1291 Column 'cset' has duplicated value 'b' in SET
Note 1291 Column 'cset' has duplicated value 'B' in SET
Note 1291 Column 'cset' has duplicated value 'd' in SET
2004-03-13 20:13:31 +01:00
drop table t1, t2, t3;
2004-08-31 13:35:04 +02:00
create database mysqltest;
use mysqltest;
2003-09-08 14:30:53 +02:00
select database();
database()
2004-08-31 13:35:04 +02:00
mysqltest
drop database mysqltest;
2003-09-08 14:30:53 +02:00
select database();
database()
NULL
2007-02-26 11:49:24 +01:00
create user mysqltest_1;
2005-06-03 21:08:45 +02:00
select database(), user();
database() user()
NULL mysqltest_1@localhost
2007-02-26 11:49:24 +01:00
drop user mysqltest_1;
2004-03-13 22:31:30 +01:00
use test;
create table t1 (a int, index `primary` (a));
ERROR 42000: Incorrect index name 'primary'
create table t1 (a int, index `PRIMARY` (a));
ERROR 42000: Incorrect index name 'PRIMARY'
create table t1 (`primary` int, index(`primary`));
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`primary` int(11) DEFAULT NULL,
2004-03-13 22:31:30 +01:00
KEY `primary_2` (`primary`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t2 (`PRIMARY` int, index(`PRIMARY`));
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
2006-02-22 10:09:59 +01:00
`PRIMARY` int(11) DEFAULT NULL,
2004-03-13 22:31:30 +01:00
KEY `PRIMARY_2` (`PRIMARY`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t3 (a int);
alter table t3 add index `primary` (a);
ERROR 42000: Incorrect index name 'primary'
alter table t3 add index `PRIMARY` (a);
ERROR 42000: Incorrect index name 'PRIMARY'
create table t4 (`primary` int);
alter table t4 add index(`primary`);
show create table t4;
Table Create Table
t4 CREATE TABLE `t4` (
2006-02-22 10:09:59 +01:00
`primary` int(11) DEFAULT NULL,
2004-03-13 22:31:30 +01:00
KEY `primary_2` (`primary`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t5 (`PRIMARY` int);
alter table t5 add index(`PRIMARY`);
show create table t5;
Table Create Table
t5 CREATE TABLE `t5` (
2006-02-22 10:09:59 +01:00
`PRIMARY` int(11) DEFAULT NULL,
2004-03-13 22:31:30 +01:00
KEY `PRIMARY_2` (`PRIMARY`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2, t3, t4, t5;
2004-03-23 14:57:14 +01:00
CREATE TABLE t1(id varchar(10) NOT NULL PRIMARY KEY, dsc longtext);
INSERT INTO t1 VALUES ('5000000001', NULL),('5000000003', 'Test'),('5000000004', NULL);
CREATE TABLE t2(id varchar(15) NOT NULL, proc varchar(100) NOT NULL, runID varchar(16) NOT NULL, start datetime NOT NULL, PRIMARY KEY (id,proc,runID,start));
INSERT INTO t2 VALUES ('5000000001', 'proc01', '20031029090650', '2003-10-29 13:38:40'),('5000000001', 'proc02', '20031029090650', '2003-10-29 13:38:51'),('5000000001', 'proc03', '20031029090650', '2003-10-29 13:38:11'),('5000000002', 'proc09', '20031024013310', '2003-10-24 01:33:11'),('5000000002', 'proc09', '20031024153537', '2003-10-24 15:36:04'),('5000000004', 'proc01', '20031024013641', '2003-10-24 01:37:29'),('5000000004', 'proc02', '20031024013641', '2003-10-24 01:37:39');
CREATE TABLE t3 SELECT t1.dsc,COUNT(DISTINCT t2.id) AS countOfRuns FROM t1 LEFT JOIN t2 ON (t1.id=t2.id) GROUP BY t1.id;
SELECT * FROM t3;
dsc countOfRuns
NULL 1
Test 0
NULL 1
drop table t1, t2, t3;
2005-05-07 14:51:29 +02:00
create table t1 (b bool not null default false);
create table t2 (b bool not null default true);
insert into t1 values ();
insert into t2 values ();
select * from t1;
b
0
select * from t2;
b
1
drop table t1,t2;
2005-05-31 11:08:14 +02:00
create table t1 (a int);
create table t1 select * from t1;
2005-05-31 20:45:41 +02:00
ERROR HY000: You can't specify target table 't1' for update in FROM clause
2005-05-31 11:08:14 +02:00
create table t2 union = (t1) select * from t1;
Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE
corrupts a MERGE table
Bug 26867 - LOCK TABLES + REPAIR + merge table result in
memory/cpu hogging
Bug 26377 - Deadlock with MERGE and FLUSH TABLE
Bug 25038 - Waiting TRUNCATE
Bug 25700 - merge base tables get corrupted by
optimize/analyze/repair table
Bug 30275 - Merge tables: flush tables or unlock tables
causes server to crash
Bug 19627 - temporary merge table locking
Bug 27660 - Falcon: merge table possible
Bug 30273 - merge tables: Can't lock file (errno: 155)
The problems were:
Bug 26379 - Combination of FLUSH TABLE and REPAIR TABLE
corrupts a MERGE table
1. A thread trying to lock a MERGE table performs busy waiting while
REPAIR TABLE or a similar table administration task is ongoing on
one or more of its MyISAM tables.
2. A thread trying to lock a MERGE table performs busy waiting until all
threads that did REPAIR TABLE or similar table administration tasks
on one or more of its MyISAM tables in LOCK TABLES segments do UNLOCK
TABLES. The difference against problem #1 is that the busy waiting
takes place *after* the administration task. It is terminated by
UNLOCK TABLES only.
3. Two FLUSH TABLES within a LOCK TABLES segment can invalidate the
lock. This does *not* require a MERGE table. The first FLUSH TABLES
can be replaced by any statement that requires other threads to
reopen the table. In 5.0 and 5.1 a single FLUSH TABLES can provoke
the problem.
Bug 26867 - LOCK TABLES + REPAIR + merge table result in
memory/cpu hogging
Trying DML on a MERGE table, which has a child locked and
repaired by another thread, made an infinite loop in the server.
Bug 26377 - Deadlock with MERGE and FLUSH TABLE
Locking a MERGE table and its children in parent-child order
and flushing the child deadlocked the server.
Bug 25038 - Waiting TRUNCATE
Truncating a MERGE child, while the MERGE table was in use,
let the truncate fail instead of waiting for the table to
become free.
Bug 25700 - merge base tables get corrupted by
optimize/analyze/repair table
Repairing a child of an open MERGE table corrupted the child.
It was necessary to FLUSH the child first.
Bug 30275 - Merge tables: flush tables or unlock tables
causes server to crash
Flushing and optimizing locked MERGE children crashed the server.
Bug 19627 - temporary merge table locking
Use of a temporary MERGE table with non-temporary children
could corrupt the children.
Temporary tables are never locked. So we do now prohibit
non-temporary chidlren of a temporary MERGE table.
Bug 27660 - Falcon: merge table possible
It was possible to create a MERGE table with non-MyISAM children.
Bug 30273 - merge tables: Can't lock file (errno: 155)
This was a Windows-only bug. Table administration statements
sometimes failed with "Can't lock file (errno: 155)".
These bugs are fixed by a new implementation of MERGE table open.
When opening a MERGE table in open_tables() we do now add the
child tables to the list of tables to be opened by open_tables()
(the "query_list"). The children are not opened in the handler at
this stage.
After opening the parent, open_tables() opens each child from the
now extended query_list. When the last child is opened, we remove
the children from the query_list again and attach the children to
the parent. This behaves similar to the old open. However it does
not open the MyISAM tables directly, but grabs them from the already
open children.
When closing a MERGE table in close_thread_table() we detach the
children only. Closing of the children is done implicitly because
they are in thd->open_tables.
For more detail see the comment at the top of ha_myisammrg.cc.
Changed from open_ltable() to open_and_lock_tables() in all places
that can be relevant for MERGE tables. The latter can handle tables
added to the list on the fly. When open_ltable() was used in a loop
over a list of tables, the list must be temporarily terminated
after every table for open_and_lock_tables().
table_list->required_type is set to FRMTYPE_TABLE to avoid open of
special tables. Handling of derived tables is suppressed.
These details are handled by the new function
open_n_lock_single_table(), which has nearly the same signature as
open_ltable() and can replace it in most cases.
In reopen_tables() some of the tables open by a thread can be
closed and reopened. When a MERGE child is affected, the parent
must be closed and reopened too. Closing of the parent is forced
before the first child is closed. Reopen happens in the order of
thd->open_tables. MERGE parents do not attach their children
automatically at open. This is done after all tables are reopened.
So all children are open when attaching them.
Special lock handling like mysql_lock_abort() or mysql_lock_remove()
needs to be suppressed for MERGE children or forwarded to the parent.
This depends on the situation. In loops over all open tables one
suppresses child lock handling. When a single table is touched,
forwarding is done.
Behavioral changes:
===================
This patch changes the behavior of temporary MERGE tables.
Temporary MERGE must have temporary children.
The old behavior was wrong. A temporary table is not locked. Hence
even non-temporary children were not locked. See
Bug 19627 - temporary merge table locking.
You cannot change the union list of a non-temporary MERGE table
when LOCK TABLES is in effect. The following does *not* work:
CREATE TABLE m1 ... ENGINE=MRG_MYISAM ...;
LOCK TABLES t1 WRITE, t2 WRITE, m1 WRITE;
ALTER TABLE m1 ... UNION=(t1,t2) ...;
However, you can do this with a temporary MERGE table.
You cannot create a MERGE table with CREATE ... SELECT, neither
as a temporary MERGE table, nor as a non-temporary MERGE table.
CREATE TABLE m1 ... ENGINE=MRG_MYISAM ... SELECT ...;
Gives error message: table is not BASE TABLE.
2007-11-15 20:25:43 +01:00
ERROR HY000: 'test.t2' is not BASE TABLE
2005-05-31 11:08:14 +02:00
flush tables with read lock;
unlock tables;
drop table t1;
2005-05-31 19:06:54 +02:00
create table t1(column.name int);
ERROR 42000: Incorrect table name 'column'
create table t1(test.column.name int);
ERROR 42000: Incorrect table name 'column'
create table t1(xyz.t1.name int);
ERROR 42000: Incorrect database name 'xyz'
create table t1(t1.name int);
create table t2(test.t2.name int);
drop table t1,t2;
2005-08-30 14:19:53 +02:00
CREATE TABLE t1 (f1 VARCHAR(255) CHARACTER SET utf8);
2005-08-31 20:06:34 +02:00
CREATE TABLE t2 AS SELECT LEFT(f1,171) AS f2 FROM t1 UNION SELECT LEFT(f1,171) AS f2 FROM t1;
2005-08-30 14:19:53 +02:00
DESC t2;
Field Type Null Key Default Extra
2005-08-31 20:06:34 +02:00
f2 varchar(171) YES NULL
2005-08-30 14:19:53 +02:00
DROP TABLE t1,t2;
2005-09-01 00:13:02 +02:00
CREATE TABLE t12913 (f1 ENUM ('a','b')) AS SELECT 'a' AS f1;
SELECT * FROM t12913;
f1
a
DROP TABLE t12913;
2005-06-09 17:06:15 +02:00
create database mysqltest;
use mysqltest;
drop database mysqltest;
create table test.t1 like x;
A fix and a test case for
Bug#19022 "Memory bug when switching db during trigger execution"
Bug#17199 "Problem when view calls function from another database."
Bug#18444 "Fully qualified stored function names don't work correctly in
SELECT statements"
Documentation note: this patch introduces a change in behaviour of prepared
statements.
This patch adds a few new invariants with regard to how THD::db should
be used. These invariants should be preserved in future:
- one should never refer to THD::db by pointer and always make a deep copy
(strmake, strdup)
- one should never compare two databases by pointer, but use strncmp or
my_strncasecmp
- TABLE_LIST object table->db should be always initialized in the parser or
by creator of the object.
For prepared statements it means that if the current database is changed
after a statement is prepared, the database that was current at prepare
remains active. This also means that you can not prepare a statement that
implicitly refers to the current database if the latter is not set.
This is not documented, and therefore needs documentation. This is NOT a
change in behavior for almost all SQL statements except:
- ALTER TABLE t1 RENAME t2
- OPTIMIZE TABLE t1
- ANALYZE TABLE t1
- TRUNCATE TABLE t1 --
until this patch t1 or t2 could be evaluated at the first execution of
prepared statement.
CURRENT_DATABASE() still works OK and is evaluated at every execution
of prepared statement.
Note, that in stored routines this is not an issue as the default
database is the database of the stored procedure and "use" statement
is prohibited in stored routines.
This patch makes obsolete the use of check_db_used (it was never used in the
old code too) and all other places that check for table->db and assign it
from THD::db if it's NULL, except the parser.
How this patch was created: THD::{db,db_length} were replaced with a
LEX_STRING, THD::db. All the places that refer to THD::{db,db_length} were
manually checked and:
- if the place uses thd->db by pointer, it was fixed to make a deep copy
- if a place compared two db pointers, it was fixed to compare them by value
(via strcmp/my_strcasecmp, whatever was approproate)
Then this intermediate patch was used to write a smaller patch that does the
same thing but without a rename.
TODO in 5.1:
- remove check_db_used
- deploy THD::set_db in mysql_change_db
See also comments to individual files.
2006-06-26 22:47:52 +02:00
ERROR 3D000: No database selected
2005-06-09 17:06:15 +02:00
drop table if exists test.t1;
2005-08-03 07:29:48 +02:00
create database mysqltest;
2005-09-13 00:44:50 +02:00
use mysqltest;
create view v1 as select 'foo' from dual;
create table t1 like v1;
ERROR HY000: 'mysqltest.v1' is not BASE TABLE
drop view v1;
drop database mysqltest;
create database mysqltest;
2005-09-12 14:09:19 +02:00
create database if not exists mysqltest character set latin2;
Warnings:
Note 1007 Can't create database 'mysqltest'; database exists
show create database mysqltest;
Database Create Database
mysqltest CREATE DATABASE `mysqltest` /*!40100 DEFAULT CHARACTER SET latin1 */
drop database mysqltest;
use test;
create table t1 (a int);
create table if not exists t1 (a int);
Warnings:
Note 1050 Table 't1' already exists
drop table t1;
2005-10-25 22:56:17 +02:00
create table t1 (
a varchar(112) charset utf8 collate utf8_bin not null,
primary key (a)
) select 'test' as a ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`a` varchar(112) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
2006-02-02 20:39:28 +01:00
PRIMARY KEY (`a`)
2005-10-25 22:56:17 +02:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
2005-11-07 07:23:43 +01:00
CREATE TABLE t2 (
a int(11) default NULL
);
insert into t2 values(111);
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int not null, primary key (a)
) select a, 1 as b from t2 ;
2006-01-05 23:47:49 +01:00
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`a` varchar(12) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
2006-01-05 23:47:49 +01:00
`b` int(11) NOT NULL,
2006-02-02 20:39:28 +01:00
PRIMARY KEY (`a`)
2006-01-05 23:47:49 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int not null, primary key (a)
) select a, 1 as c from t2 ;
2005-11-09 12:47:58 +01:00
Warnings:
Warning 1364 Field 'b' doesn't have a default value
2005-11-07 07:23:43 +01:00
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2005-11-09 12:47:58 +01:00
`b` int(11) NOT NULL,
2006-02-22 10:09:59 +01:00
`a` varchar(12) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
2006-07-29 22:33:24 +02:00
`c` int(1) NOT NULL DEFAULT '0',
2006-02-02 20:39:28 +01:00
PRIMARY KEY (`a`)
2006-01-05 23:47:49 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int null, primary key (a)
) select a, 1 as c from t2 ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`b` int(11) DEFAULT NULL,
`a` varchar(12) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
2006-07-29 22:33:24 +02:00
`c` int(1) NOT NULL DEFAULT '0',
2006-02-02 20:39:28 +01:00
PRIMARY KEY (`a`)
2005-11-07 07:23:43 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int not null, primary key (a)
) select 'a' as a , 1 as b from t2 ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`a` varchar(12) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
2005-11-09 12:47:58 +01:00
`b` int(11) NOT NULL,
2006-02-02 20:39:28 +01:00
PRIMARY KEY (`a`)
2005-11-07 07:23:43 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin,
b int not null, primary key (a)
) select 'a' as a , 1 as b from t2 ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`a` varchar(12) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '',
2005-11-09 12:47:58 +01:00
`b` int(11) NOT NULL,
2006-02-02 20:39:28 +01:00
PRIMARY KEY (`a`)
2005-11-07 07:23:43 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2;
create table t1 (
a1 int not null,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int
);
insert into t1 values (1,1,1, 1,1,1, 1,1,1);
create table t2 (
a1 varchar(12) charset utf8 collate utf8_bin not null,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int,
primary key (a1)
) select a1,a2,a3,a4,a5,a6,a7,a8,a9 from t1 ;
drop table t2;
create table t2 (
a1 varchar(12) charset utf8 collate utf8_bin,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int
) select a1,a2,a3,a4,a5,a6,a7,a8,a9 from t1;
drop table t1, t2;
create table t1 (
a1 int, a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int
);
insert into t1 values (1,1,1, 1,1,1, 1,1,1);
create table t2 (
a1 varchar(12) charset utf8 collate utf8_bin not null,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int,
primary key (a1)
) select a1,a2,a3,a4,a5,a6,a7,a8,a9 from t1 ;
2005-11-09 07:34:46 +01:00
drop table t2;
create table t2 ( a int default 3, b int default 3)
select a1,a2 from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
2006-02-22 10:09:59 +01:00
`a` int(11) DEFAULT '3',
`b` int(11) DEFAULT '3',
`a1` int(11) DEFAULT NULL,
`a2` int(11) DEFAULT NULL
2005-11-09 07:34:46 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
2005-11-07 07:23:43 +01:00
drop table t1, t2;
2006-03-29 16:52:26 +02:00
create table t1(a set("a,b","c,d") not null);
2006-03-30 06:13:25 +02:00
ERROR 22007: Illegal set 'a,b' value found during parsing
2005-11-24 02:05:59 +01:00
create table t1 (i int) engine=myisam max_rows=100000000000;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`i` int(11) DEFAULT NULL
2005-11-24 02:05:59 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=4294967295
alter table t1 max_rows=100;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`i` int(11) DEFAULT NULL
2005-11-24 02:05:59 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=100
alter table t1 max_rows=100000000000;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2006-02-22 10:09:59 +01:00
`i` int(11) DEFAULT NULL
2005-11-24 02:05:59 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=4294967295
drop table t1;
2007-05-11 19:51:03 +02:00
create table t1 select * from t2;
ERROR 42S02: Table 'test.t2' doesn't exist
create table t1 select * from t1;
2009-11-30 16:55:03 +01:00
ERROR 42S02: Table 'test.t1' doesn't exist
2007-05-11 19:51:03 +02:00
create table t1 select coalesce('a' collate latin1_swedish_ci,'b' collate latin1_bin);
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'coalesce'
create table t1 (primary key(a)) select "b" as b;
ERROR 42000: Key column 'a' doesn't exist in table
create table t1 (a int);
create table if not exists t1 select 1 as a, 2 as b;
ERROR 21S01: Column count doesn't match value count at row 1
drop table t1;
create table t1 (primary key (a)) (select 1 as a) union all (select 1 as a);
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
create table t1 (i int);
create table t1 select 1 as i;
ERROR 42S01: Table 't1' already exists
create table if not exists t1 select 1 as i;
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
i
1
2009-11-30 16:55:03 +01:00
create table if not exists t1 select * from t1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
select * from t1;
i
1
2007-05-11 19:51:03 +02:00
create table t1 select coalesce('a' collate latin1_swedish_ci,'b' collate latin1_bin);
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'coalesce'
select * from t1;
i
1
alter table t1 add primary key (i);
create table if not exists t1 (select 2 as i) union all (select 2 as i);
ERROR 23000: Duplicate entry '2' for key 'PRIMARY'
select * from t1;
i
1
2
drop table t1;
create temporary table t1 (j int);
create table if not exists t1 select 1;
select * from t1;
j
drop temporary table t1;
select * from t1;
2010-01-16 08:44:24 +01:00
1
1
2007-05-11 19:51:03 +02:00
drop table t1;
create table t1 (i int);
insert into t1 values (1), (2);
lock tables t1 read;
create table t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
create table if not exists t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
unlock tables;
create table t2 (j int);
lock tables t1 read;
create table t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
create table if not exists t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
unlock tables;
lock table t1 read, t2 read;
create table t2 select * from t1;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
create table if not exists t2 select * from t1;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
unlock tables;
lock table t1 read, t2 write;
create table t2 select * from t1;
ERROR 42S01: Table 't2' already exists
create table if not exists t2 select * from t1;
Warnings:
Note 1050 Table 't2' already exists
select * from t1;
i
1
2
unlock tables;
drop table t2;
lock tables t1 read;
create temporary table t2 select * from t1;
create temporary table if not exists t2 select * from t1;
Warnings:
Note 1050 Table 't2' already exists
select * from t2;
i
1
2
1
2
unlock tables;
drop table t1, t2;
2006-09-18 16:30:51 +02:00
create table t1 (upgrade int);
drop table t1;
2007-07-01 07:50:14 +02:00
create table t1 (
c1 int, c2 int, c3 int, c4 int, c5 int, c6 int, c7 int, c8 int,
c9 int, c10 int, c11 int, c12 int, c13 int, c14 int, c15 int, c16 int,
key a001_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a002_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a003_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a004_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a005_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a006_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a007_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a008_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a009_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a010_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a011_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a012_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a013_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a014_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a015_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a016_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a017_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a018_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a019_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a020_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a021_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a022_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a023_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a024_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a025_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a026_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a027_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a028_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a029_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a030_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a031_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a032_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a033_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a034_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a035_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a036_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a037_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a038_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a039_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a040_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a041_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a042_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a043_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a044_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a045_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a046_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a047_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a048_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a049_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a050_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a051_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a052_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a053_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a054_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a055_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a056_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a057_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a058_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a059_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a060_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a061_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a062_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a063_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
key a064_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16)
);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) DEFAULT NULL,
`c2` int(11) DEFAULT NULL,
`c3` int(11) DEFAULT NULL,
`c4` int(11) DEFAULT NULL,
`c5` int(11) DEFAULT NULL,
`c6` int(11) DEFAULT NULL,
`c7` int(11) DEFAULT NULL,
`c8` int(11) DEFAULT NULL,
`c9` int(11) DEFAULT NULL,
`c10` int(11) DEFAULT NULL,
`c11` int(11) DEFAULT NULL,
`c12` int(11) DEFAULT NULL,
`c13` int(11) DEFAULT NULL,
`c14` int(11) DEFAULT NULL,
`c15` int(11) DEFAULT NULL,
`c16` int(11) DEFAULT NULL,
KEY `a001_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a002_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a003_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a004_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a005_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a006_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a007_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a008_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a009_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a010_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a011_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a012_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a013_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a014_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a015_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a016_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a017_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a018_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a019_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a020_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a021_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a022_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a023_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a024_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a025_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a026_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a027_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a028_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a029_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a030_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a031_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a032_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a033_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a034_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a035_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a036_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a037_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a038_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a039_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a040_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a041_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a042_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a043_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a044_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a045_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a046_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a047_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a048_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a049_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a050_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a051_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a052_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a053_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a054_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a055_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a056_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a057_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a058_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a059_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a060_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a061_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a062_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a063_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a064_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
flush tables;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) DEFAULT NULL,
`c2` int(11) DEFAULT NULL,
`c3` int(11) DEFAULT NULL,
`c4` int(11) DEFAULT NULL,
`c5` int(11) DEFAULT NULL,
`c6` int(11) DEFAULT NULL,
`c7` int(11) DEFAULT NULL,
`c8` int(11) DEFAULT NULL,
`c9` int(11) DEFAULT NULL,
`c10` int(11) DEFAULT NULL,
`c11` int(11) DEFAULT NULL,
`c12` int(11) DEFAULT NULL,
`c13` int(11) DEFAULT NULL,
`c14` int(11) DEFAULT NULL,
`c15` int(11) DEFAULT NULL,
`c16` int(11) DEFAULT NULL,
KEY `a001_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a002_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a003_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a004_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a005_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a006_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a007_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a008_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a009_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a010_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a011_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a012_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a013_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a014_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a015_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a016_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a017_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a018_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a019_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a020_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a021_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a022_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a023_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a024_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a025_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a026_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a027_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a028_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a029_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a030_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a031_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a032_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a033_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a034_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a035_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a036_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a037_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a038_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a039_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a040_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a041_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a042_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a043_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a044_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a045_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a046_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a047_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a048_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a049_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a050_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a051_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a052_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a053_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a054_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a055_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a056_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a057_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a058_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a059_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a060_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a061_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a062_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a063_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a064_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (c1 int, c2 int, c3 int, c4 int, c5 int, c6 int, c7 int,
c8 int, c9 int, c10 int, c11 int, c12 int, c13 int, c14 int, c15 int, c16 int);
alter table t1
add key a001_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a002_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a003_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a004_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a005_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a006_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a007_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a008_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a009_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a010_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a011_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a012_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a013_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a014_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a015_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a016_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a017_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a018_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a019_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a020_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a021_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a022_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a023_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a024_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a025_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a026_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a027_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a028_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a029_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a030_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a031_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a032_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a033_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a034_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a035_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a036_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a037_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a038_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a039_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a040_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a041_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a042_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a043_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a044_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a045_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a046_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a047_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a048_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a049_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a050_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a051_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a052_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a053_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a054_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a055_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a056_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a057_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a058_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a059_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a060_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a061_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a062_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a063_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16),
add key a064_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) DEFAULT NULL,
`c2` int(11) DEFAULT NULL,
`c3` int(11) DEFAULT NULL,
`c4` int(11) DEFAULT NULL,
`c5` int(11) DEFAULT NULL,
`c6` int(11) DEFAULT NULL,
`c7` int(11) DEFAULT NULL,
`c8` int(11) DEFAULT NULL,
`c9` int(11) DEFAULT NULL,
`c10` int(11) DEFAULT NULL,
`c11` int(11) DEFAULT NULL,
`c12` int(11) DEFAULT NULL,
`c13` int(11) DEFAULT NULL,
`c14` int(11) DEFAULT NULL,
`c15` int(11) DEFAULT NULL,
`c16` int(11) DEFAULT NULL,
KEY `a001_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a002_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a003_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a004_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a005_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a006_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a007_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a008_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a009_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a010_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a011_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a012_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a013_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a014_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a015_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a016_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a017_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a018_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a019_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a020_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a021_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a022_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a023_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a024_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a025_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a026_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a027_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a028_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a029_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a030_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a031_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a032_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a033_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a034_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a035_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a036_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a037_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a038_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a039_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a040_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a041_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a042_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a043_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a044_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a045_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a046_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a047_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a048_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a049_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a050_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a051_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a052_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a053_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a054_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a055_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a056_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a057_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a058_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a059_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a060_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a061_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a062_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a063_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a064_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
flush tables;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) DEFAULT NULL,
`c2` int(11) DEFAULT NULL,
`c3` int(11) DEFAULT NULL,
`c4` int(11) DEFAULT NULL,
`c5` int(11) DEFAULT NULL,
`c6` int(11) DEFAULT NULL,
`c7` int(11) DEFAULT NULL,
`c8` int(11) DEFAULT NULL,
`c9` int(11) DEFAULT NULL,
`c10` int(11) DEFAULT NULL,
`c11` int(11) DEFAULT NULL,
`c12` int(11) DEFAULT NULL,
`c13` int(11) DEFAULT NULL,
`c14` int(11) DEFAULT NULL,
`c15` int(11) DEFAULT NULL,
`c16` int(11) DEFAULT NULL,
KEY `a001_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a002_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a003_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a004_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a005_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a006_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a007_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a008_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a009_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a010_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a011_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a012_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a013_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a014_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a015_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a016_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a017_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a018_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a019_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a020_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a021_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a022_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a023_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a024_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a025_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a026_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a027_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a028_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a029_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a030_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a031_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a032_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a033_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a034_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a035_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a036_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a037_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a038_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a039_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a040_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a041_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a042_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a043_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a044_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a045_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a046_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a047_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a048_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a049_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a050_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a051_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a052_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a053_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a054_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a055_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a056_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a057_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a058_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a059_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a060_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a061_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a062_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a063_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`),
KEY `a064_long_123456789_123456789_123456789_123456789_123456789_1234` (`c1`,`c2`,`c3`,`c4`,`c5`,`c6`,`c7`,`c8`,`c9`,`c10`,`c11`,`c12`,`c13`,`c14`,`c15`,`c16`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
alter table t1 add key
a065_long_123456789_123456789_123456789_123456789_123456789_1234 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16);
ERROR 42000: Too many keys specified; max 64 keys allowed
drop table t1;
create table t1 (c1 int, c2 int, c3 int, c4 int, c5 int, c6 int, c7 int,
c8 int, c9 int, c10 int, c11 int, c12 int, c13 int, c14 int, c15 int,
c16 int, c17 int);
alter table t1 add key i1 (
c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16, c17);
ERROR 42000: Too many key parts specified; max 16 parts allowed
alter table t1 add key
a001_long_123456789_123456789_123456789_123456789_123456789_12345 (c1);
ERROR 42000: Identifier name 'a001_long_123456789_123456789_123456789_123456789_123456789_12345' is too long
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) DEFAULT NULL,
`c2` int(11) DEFAULT NULL,
`c3` int(11) DEFAULT NULL,
`c4` int(11) DEFAULT NULL,
`c5` int(11) DEFAULT NULL,
`c6` int(11) DEFAULT NULL,
`c7` int(11) DEFAULT NULL,
`c8` int(11) DEFAULT NULL,
`c9` int(11) DEFAULT NULL,
`c10` int(11) DEFAULT NULL,
`c11` int(11) DEFAULT NULL,
`c12` int(11) DEFAULT NULL,
`c13` int(11) DEFAULT NULL,
`c14` int(11) DEFAULT NULL,
`c15` int(11) DEFAULT NULL,
`c16` int(11) DEFAULT NULL,
`c17` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
2007-07-19 17:56:07 +02:00
Bug #26104 Bug on foreign key class constructor
Check that ref_columns is initalized correctly in the constructor
and semantic checks in mysql_prepare_table work.
We do not need a storage engine that supports foreign keys
for this test, as the checks are purely syntax-based, and the
syntax is supported for all engines.
drop table if exists t1,t2;
create table t1(a int not null, b int not null, primary key (a, b));
create table t2(a int not null, b int not null, c int not null, primary key (a),
foreign key fk_bug26104 (b,c) references t1(a));
ERROR 42000: Incorrect foreign key definition for 'fk_bug26104': Key reference and table reference don't match
drop table t1;
2007-07-24 16:15:44 +02:00
create table t1(f1 int,f2 int);
insert into t1 value(1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
flush status;
create table t2 select sql_big_result f1,count(f2) from t1 group by f1;
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 0
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 7
drop table t1,t2;
2008-02-01 09:00:40 +01:00
CREATE TABLE t1(c1 VARCHAR(33), KEY USING BTREE (c1));
DROP TABLE t1;
CREATE TABLE t1(c1 VARCHAR(33), KEY (c1) USING BTREE);
DROP TABLE t1;
CREATE TABLE t1(c1 VARCHAR(33), KEY USING BTREE (c1) USING HASH) ENGINE=MEMORY;
SHOW INDEX FROM t1;
2010-02-20 11:07:32 +01:00
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
t1 1 c1 1 c1 NULL 0 NULL NULL YES HASH
2008-02-01 09:00:40 +01:00
DROP TABLE t1;
CREATE TABLE t1(c1 VARCHAR(33), KEY USING HASH (c1) USING BTREE) ENGINE=MEMORY;
SHOW INDEX FROM t1;
2010-02-20 11:07:32 +01:00
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
t1 1 c1 1 c1 A NULL NULL NULL YES BTREE
2008-02-01 09:00:40 +01:00
DROP TABLE t1;
2008-10-02 13:57:52 +02:00
create user mysqltest_1@'test@test';
ERROR HY000: Malformed hostname (illegal symbol: '@')
2008-09-03 12:17:19 +02:00
CREATE TABLE t1 (a INTEGER AUTO_INCREMENT PRIMARY KEY, b INTEGER NOT NULL);
INSERT IGNORE INTO t1 (b) VALUES (5);
CREATE TABLE IF NOT EXISTS t2 (a INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY)
SELECT a FROM t1;
CREATE TABLE IF NOT EXISTS t2 (a INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY)
SELECT a FROM t1;
2008-09-05 11:06:24 +02:00
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
2008-09-03 12:17:19 +02:00
CREATE TABLE IF NOT EXISTS t2 (a INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY)
SELECT a FROM t1;
2008-09-05 11:06:24 +02:00
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
2008-09-03 12:17:19 +02:00
DROP TABLE t1, t2;
2009-09-04 08:51:54 +02:00
#
# BUG#46384 - mysqld segfault when trying to create table with same
# name as existing view
#
CREATE TABLE t1 (a INT);
CREATE TABLE t2 (a INT);
INSERT INTO t1 VALUES (1),(2),(3);
INSERT INTO t2 VALUES (1),(2),(3);
CREATE VIEW v1 AS SELECT t1.a FROM t1, t2;
CREATE TABLE v1 AS SELECT * FROM t1;
ERROR 42S01: Table 'v1' already exists
DROP VIEW v1;
DROP TABLE t1,t2;
2007-03-29 12:52:31 +02:00
End of 5.0 tests
This changeset is largely a handler cleanup changeset (WL#3281), but includes fixes and cleanups that was found necessary while testing the handler changes
Changes that requires code changes in other code of other storage engines.
(Note that all changes are very straightforward and one should find all issues
by compiling a --debug build and fixing all compiler errors and all
asserts in field.cc while running the test suite),
- New optional handler function introduced: reset()
This is called after every DML statement to make it easy for a handler to
statement specific cleanups.
(The only case it's not called is if force the file to be closed)
- handler::extra(HA_EXTRA_RESET) is removed. Code that was there before
should be moved to handler::reset()
- table->read_set contains a bitmap over all columns that are needed
in the query. read_row() and similar functions only needs to read these
columns
- table->write_set contains a bitmap over all columns that will be updated
in the query. write_row() and update_row() only needs to update these
columns.
The above bitmaps should now be up to date in all context
(including ALTER TABLE, filesort()).
The handler is informed of any changes to the bitmap after
fix_fields() by calling the virtual function
handler::column_bitmaps_signal(). If the handler does caching of
these bitmaps (instead of using table->read_set, table->write_set),
it should redo the caching in this code. as the signal() may be sent
several times, it's probably best to set a variable in the signal
and redo the caching on read_row() / write_row() if the variable was
set.
- Removed the read_set and write_set bitmap objects from the handler class
- Removed all column bit handling functions from the handler class.
(Now one instead uses the normal bitmap functions in my_bitmap.c instead
of handler dedicated bitmap functions)
- field->query_id is removed. One should instead instead check
table->read_set and table->write_set if a field is used in the query.
- handler::extra(HA_EXTRA_RETRIVE_ALL_COLS) and
handler::extra(HA_EXTRA_RETRIEVE_PRIMARY_KEY) are removed. One should now
instead use table->read_set to check for which columns to retrieve.
- If a handler needs to call Field->val() or Field->store() on columns
that are not used in the query, one should install a temporary
all-columns-used map while doing so. For this, we provide the following
functions:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->read_set);
field->val();
dbug_tmp_restore_column_map(table->read_set, old_map);
and similar for the write map:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->write_set);
field->val();
dbug_tmp_restore_column_map(table->write_set, old_map);
If this is not done, you will sooner or later hit a DBUG_ASSERT
in the field store() / val() functions.
(For not DBUG binaries, the dbug_tmp_restore_column_map() and
dbug_tmp_restore_column_map() are inline dummy functions and should
be optimized away be the compiler).
- If one needs to temporary set the column map for all binaries (and not
just to avoid the DBUG_ASSERT() in the Field::store() / Field::val()
methods) one should use the functions tmp_use_all_columns() and
tmp_restore_column_map() instead of the above dbug_ variants.
- All 'status' fields in the handler base class (like records,
data_file_length etc) are now stored in a 'stats' struct. This makes
it easier to know what status variables are provided by the base
handler. This requires some trivial variable names in the extra()
function.
- New virtual function handler::records(). This is called to optimize
COUNT(*) if (handler::table_flags() & HA_HAS_RECORDS()) is true.
(stats.records is not supposed to be an exact value. It's only has to
be 'reasonable enough' for the optimizer to be able to choose a good
optimization path).
- Non virtual handler::init() function added for caching of virtual
constants from engine.
- Removed has_transactions() virtual method. Now one should instead return
HA_NO_TRANSACTIONS in table_flags() if the table handler DOES NOT support
transactions.
- The 'xxxx_create_handler()' function now has a MEM_ROOT_root argument
that is to be used with 'new handler_name()' to allocate the handler
in the right area. The xxxx_create_handler() function is also
responsible for any initialization of the object before returning.
For example, one should change:
static handler *myisam_create_handler(TABLE_SHARE *table)
{
return new ha_myisam(table);
}
->
static handler *myisam_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
{
return new (mem_root) ha_myisam(table);
}
- New optional virtual function: use_hidden_primary_key().
This is called in case of an update/delete when
(table_flags() and HA_PRIMARY_KEY_REQUIRED_FOR_DELETE) is defined
but we don't have a primary key. This allows the handler to take precisions
in remembering any hidden primary key to able to update/delete any
found row. The default handler marks all columns to be read.
- handler::table_flags() now returns a ulonglong (to allow for more flags).
- New/changed table_flags()
- HA_HAS_RECORDS Set if ::records() is supported
- HA_NO_TRANSACTIONS Set if engine doesn't support transactions
- HA_PRIMARY_KEY_REQUIRED_FOR_DELETE
Set if we should mark all primary key columns for
read when reading rows as part of a DELETE
statement. If there is no primary key,
all columns are marked for read.
- HA_PARTIAL_COLUMN_READ Set if engine will not read all columns in some
cases (based on table->read_set)
- HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS
Renamed to HA_PRIMARY_KEY_REQUIRED_FOR_POSITION.
- HA_DUPP_POS Renamed to HA_DUPLICATE_POS
- HA_REQUIRES_KEY_COLUMNS_FOR_DELETE
Set this if we should mark ALL key columns for
read when when reading rows as part of a DELETE
statement. In case of an update we will mark
all keys for read for which key part changed
value.
- HA_STATS_RECORDS_IS_EXACT
Set this if stats.records is exact.
(This saves us some extra records() calls
when optimizing COUNT(*))
- Removed table_flags()
- HA_NOT_EXACT_COUNT Now one should instead use HA_HAS_RECORDS if
handler::records() gives an exact count() and
HA_STATS_RECORDS_IS_EXACT if stats.records is exact.
- HA_READ_RND_SAME Removed (no one supported this one)
- Removed not needed functions ha_retrieve_all_cols() and ha_retrieve_all_pk()
- Renamed handler::dupp_pos to handler::dup_pos
- Removed not used variable handler::sortkey
Upper level handler changes:
- ha_reset() now does some overall checks and calls ::reset()
- ha_table_flags() added. This is a cached version of table_flags(). The
cache is updated on engine creation time and updated on open.
MySQL level changes (not obvious from the above):
- DBUG_ASSERT() added to check that column usage matches what is set
in the column usage bit maps. (This found a LOT of bugs in current
column marking code).
- In 5.1 before, all used columns was marked in read_set and only updated
columns was marked in write_set. Now we only mark columns for which we
need a value in read_set.
- Column bitmaps are created in open_binary_frm() and open_table_from_share().
(Before this was in table.cc)
- handler::table_flags() calls are replaced with handler::ha_table_flags()
- For calling field->val() you must have the corresponding bit set in
table->read_set. For calling field->store() you must have the
corresponding bit set in table->write_set. (There are asserts in
all store()/val() functions to catch wrong usage)
- thd->set_query_id is renamed to thd->mark_used_columns and instead
of setting this to an integer value, this has now the values:
MARK_COLUMNS_NONE, MARK_COLUMNS_READ, MARK_COLUMNS_WRITE
Changed also all variables named 'set_query_id' to mark_used_columns.
- In filesort() we now inform the handler of exactly which columns are needed
doing the sort and choosing the rows.
- The TABLE_SHARE object has a 'all_set' column bitmap one can use
when one needs a column bitmap with all columns set.
(This is used for table->use_all_columns() and other places)
- The TABLE object has 3 column bitmaps:
- def_read_set Default bitmap for columns to be read
- def_write_set Default bitmap for columns to be written
- tmp_set Can be used as a temporary bitmap when needed.
The table object has also two pointer to bitmaps read_set and write_set
that the handler should use to find out which columns are used in which way.
- count() optimization now calls handler::records() instead of using
handler->stats.records (if (table_flags() & HA_HAS_RECORDS) is true).
- Added extra argument to Item::walk() to indicate if we should also
traverse sub queries.
- Added TABLE parameter to cp_buffer_from_ref()
- Don't close tables created with CREATE ... SELECT but keep them in
the table cache. (Faster usage of newly created tables).
New interfaces:
- table->clear_column_bitmaps() to initialize the bitmaps for tables
at start of new statements.
- table->column_bitmaps_set() to set up new column bitmaps and signal
the handler about this.
- table->column_bitmaps_set_no_signal() for some few cases where we need
to setup new column bitmaps but don't signal the handler (as the handler
has already been signaled about these before). Used for the momement
only in opt_range.cc when doing ROR scans.
- table->use_all_columns() to install a bitmap where all columns are marked
as use in the read and the write set.
- table->default_column_bitmaps() to install the normal read and write
column bitmaps, but not signaling the handler about this.
This is mainly used when creating TABLE instances.
- table->mark_columns_needed_for_delete(),
table->mark_columns_needed_for_delete() and
table->mark_columns_needed_for_insert() to allow us to put additional
columns in column usage maps if handler so requires.
(The handler indicates what it neads in handler->table_flags())
- table->prepare_for_position() to allow us to tell handler that it
needs to read primary key parts to be able to store them in
future table->position() calls.
(This replaces the table->file->ha_retrieve_all_pk function)
- table->mark_auto_increment_column() to tell handler are going to update
columns part of any auto_increment key.
- table->mark_columns_used_by_index() to mark all columns that is part of
an index. It will also send extra(HA_EXTRA_KEYREAD) to handler to allow
it to quickly know that it only needs to read colums that are part
of the key. (The handler can also use the column map for detecting this,
but simpler/faster handler can just monitor the extra() call).
- table->mark_columns_used_by_index_no_reset() to in addition to other columns,
also mark all columns that is used by the given key.
- table->restore_column_maps_after_mark_index() to restore to default
column maps after a call to table->mark_columns_used_by_index().
- New item function register_field_in_read_map(), for marking used columns
in table->read_map. Used by filesort() to mark all used columns
- Maintain in TABLE->merge_keys set of all keys that are used in query.
(Simplices some optimization loops)
- Maintain Field->part_of_key_not_clustered which is like Field->part_of_key
but the field in the clustered key is not assumed to be part of all index.
(used in opt_range.cc for faster loops)
- dbug_tmp_use_all_columns(), dbug_tmp_restore_column_map()
tmp_use_all_columns() and tmp_restore_column_map() functions to temporally
mark all columns as usable. The 'dbug_' version is primarily intended
inside a handler when it wants to just call Field:store() & Field::val()
functions, but don't need the column maps set for any other usage.
(ie:: bitmap_is_set() is never called)
- We can't use compare_records() to skip updates for handlers that returns
a partial column set and the read_set doesn't cover all columns in the
write set. The reason for this is that if we have a column marked only for
write we can't in the MySQL level know if the value changed or not.
The reason this worked before was that MySQL marked all to be written
columns as also to be read. The new 'optimal' bitmaps exposed this 'hidden
bug'.
- open_table_from_share() does not anymore setup temporary MEM_ROOT
object as a thread specific variable for the handler. Instead we
send the to-be-used MEMROOT to get_new_handler().
(Simpler, faster code)
Bugs fixed:
- Column marking was not done correctly in a lot of cases.
(ALTER TABLE, when using triggers, auto_increment fields etc)
(Could potentially result in wrong values inserted in table handlers
relying on that the old column maps or field->set_query_id was correct)
Especially when it comes to triggers, there may be cases where the
old code would cause lost/wrong values for NDB and/or InnoDB tables.
- Split thd->options flag OPTION_STATUS_NO_TRANS_UPDATE to two flags:
OPTION_STATUS_NO_TRANS_UPDATE and OPTION_KEEP_LOG.
This allowed me to remove some wrong warnings about:
"Some non-transactional changed tables couldn't be rolled back"
- Fixed handling of INSERT .. SELECT and CREATE ... SELECT that wrongly reset
(thd->options & OPTION_STATUS_NO_TRANS_UPDATE) which caused us to loose
some warnings about
"Some non-transactional changed tables couldn't be rolled back")
- Fixed use of uninitialized memory in ha_ndbcluster.cc::delete_table()
which could cause delete_table to report random failures.
- Fixed core dumps for some tests when running with --debug
- Added missing FN_LIBCHAR in mysql_rm_tmp_tables()
(This has probably caused us to not properly remove temporary files after
crash)
- slow_logs was not properly initialized, which could maybe cause
extra/lost entries in slow log.
- If we get an duplicate row on insert, change column map to read and
write all columns while retrying the operation. This is required by
the definition of REPLACE and also ensures that fields that are only
part of UPDATE are properly handled. This fixed a bug in NDB and
REPLACE where REPLACE wrongly copied some column values from the replaced
row.
- For table handler that doesn't support NULL in keys, we would give an error
when creating a primary key with NULL fields, even after the fields has been
automaticly converted to NOT NULL.
- Creating a primary key on a SPATIAL key, would fail if field was not
declared as NOT NULL.
Cleanups:
- Removed not used condition argument to setup_tables
- Removed not needed item function reset_query_id_processor().
- Field->add_index is removed. Now this is instead maintained in
(field->flags & FIELD_IN_ADD_INDEX)
- Field->fieldnr is removed (use field->field_index instead)
- New argument to filesort() to indicate that it should return a set of
row pointers (not used columns). This allowed me to remove some references
to sql_command in filesort and should also enable us to return column
results in some cases where we couldn't before.
- Changed column bitmap handling in opt_range.cc to be aligned with TABLE
bitmap, which allowed me to use bitmap functions instead of looping over
all fields to create some needed bitmaps. (Faster and smaller code)
- Broke up found too long lines
- Moved some variable declaration at start of function for better code
readability.
- Removed some not used arguments from functions.
(setup_fields(), mysql_prepare_insert_check_table())
- setup_fields() now takes an enum instead of an int for marking columns
usage.
- For internal temporary tables, use handler::write_row(),
handler::delete_row() and handler::update_row() instead of
handler::ha_xxxx() for faster execution.
- Changed some constants to enum's and define's.
- Using separate column read and write sets allows for easier checking
of timestamp field was set by statement.
- Remove calls to free_io_cache() as this is now done automaticly in ha_reset()
- Don't build table->normalized_path as this is now identical to table->path
(after bar's fixes to convert filenames)
- Fixed some missed DBUG_PRINT(.."%lx") to use "0x%lx" to make it easier to
do comparision with the 'convert-dbug-for-diff' tool.
Things left to do in 5.1:
- We wrongly log failed CREATE TABLE ... SELECT in some cases when using
row based logging (as shown by testcase binlog_row_mix_innodb_myisam.result)
Mats has promised to look into this.
- Test that my fix for CREATE TABLE ... SELECT is indeed correct.
(I added several test cases for this, but in this case it's better that
someone else also tests this throughly).
Lars has promosed to do this.
2006-06-04 17:52:22 +02:00
CREATE TABLE t1 (a int, b int);
insert into t1 values (1,1),(1,2);
CREATE TABLE t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
drop table if exists t2;
Warnings:
Note 1051 Unknown table 't2'
CREATE TEMPORARY TABLE t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
drop table if exists t2;
Warnings:
Note 1051 Unknown table 't2'
CREATE TABLE t2 (a int, b int, primary key (a));
CREATE TABLE IF NOT EXISTS t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
1 1
TRUNCATE table t2;
INSERT INTO t2 select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
1 1
drop table t2;
CREATE TEMPORARY TABLE t2 (a int, b int, primary key (a));
CREATE TEMPORARY TABLE IF NOT EXISTS t2 (primary key (a)) select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
1 1
TRUNCATE table t2;
INSERT INTO t2 select * from t1;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * from t2;
a b
1 1
drop table t1,t2;
2006-10-16 18:57:33 +02:00
CREATE DATABASE aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;
ERROR 42000: Incorrect database name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
DROP DATABASE aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;
ERROR 42000: Incorrect database name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
USE aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;
ERROR 42000: Incorrect database name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
SHOW CREATE DATABASE aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;
ERROR 42000: Incorrect database name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
2007-04-03 13:13:27 +02:00
set names utf8;
create database имя_б а о р о е у о б о е е
use имя_б а о р о е у о б о е е
select database();
database()
имя_б а о р о е у о б о е е
2007-04-04 14:36:58 +02:00
use test;
select SCHEMA_NAME from information_schema.schemata
where schema_name='имя_б а о р о е у о б о е е
SCHEMA_NAME
имя_б а о р о е у о б о е е
drop database имя_б а о р о е у о б о е е
2007-04-03 13:13:27 +02:00
create table имя_та б о р о е у о б о е е
(
имя_по о р о е у о б о е е
index имя_инде с а о р о е у о б о е е о о р о е у о б о е е
);
create view имя_вью_ко р о е у о б о е е
select имя_по о р о е у о б о е е
from имя_та б о р о е у о б о е е
select * from имя_та б о р о е у о б о е е
имя_по о р о е у о б о е е
select TABLE_NAME from information_schema.tables where
2007-04-04 14:36:58 +02:00
table_schema='test';
2007-04-03 13:13:27 +02:00
TABLE_NAME
имя_вью_ко р о е у о б о е е
имя_та б о р о е у о б о е е
select COLUMN_NAME from information_schema.columns where
2007-04-04 14:36:58 +02:00
table_schema='test';
2007-04-03 13:13:27 +02:00
COLUMN_NAME
имя_по о р о е у о б о е е
имя_по о р о е у о б о е е
select INDEX_NAME from information_schema.statistics where
2007-04-04 14:36:58 +02:00
table_schema='test';
2007-04-03 13:13:27 +02:00
INDEX_NAME
имя_инде с а о р о е у о б о е е
select TABLE_NAME from information_schema.views where
2007-04-04 14:36:58 +02:00
table_schema='test';
2007-04-03 13:13:27 +02:00
TABLE_NAME
имя_вью_ко р о е у о б о е е
show create table имя_та б о р о е у о б о е е
Table Create Table
имя_та б о р о е у о б о е е а б о р о е у о б о е е
`имя_по о р о е у о б о е е
KEY `имя_инде с а о р о е у о б о е е о о р о е у о б о е е
) ENGINE=MyISAM DEFAULT CHARSET=latin1
show create view имя_вью_ко р о е у о б о е е
Patch for the following bugs:
- BUG#11986: Stored routines and triggers can fail if the code
has a non-ascii symbol
- BUG#16291: mysqldump corrupts string-constants with non-ascii-chars
- BUG#19443: INFORMATION_SCHEMA does not support charsets properly
- BUG#21249: Character set of SP-var can be ignored
- BUG#25212: Character set of string constant is ignored (stored routines)
- BUG#25221: Character set of string constant is ignored (triggers)
There were a few general problems that caused these bugs:
1. Character set information of the original (definition) query for views,
triggers, stored routines and events was lost.
2. mysqldump output query in client character set, which can be
inappropriate to encode definition-query.
3. INFORMATION_SCHEMA used strings with mixed encodings to display object
definition;
1. No query-definition-character set.
In order to compile query into execution code, some extra data (such as
environment variables or the database character set) is used. The problem
here was that this context was not preserved. So, on the next load it can
differ from the original one, thus the result will be different.
The context contains the following data:
- client character set;
- connection collation (character set and collation);
- collation of the owner database;
The fix is to store this context and use it each time we parse (compile)
and execute the object (stored routine, trigger, ...).
2. Wrong mysqldump-output.
The original query can contain several encodings (by means of character set
introducers). The problem here was that we tried to convert original query
to the mysqldump-client character set.
Moreover, we stored queries in different character sets for different
objects (views, for one, used UTF8, triggers used original character set).
The solution is
- to store definition queries in the original character set;
- to change SHOW CREATE statement to output definition query in the
binary character set (i.e. without any conversion);
- introduce SHOW CREATE TRIGGER statement;
- to dump special statements to switch the context to the original one
before dumping and restore it afterwards.
Note, in order to preserve the database collation at the creation time,
additional ALTER DATABASE might be used (to temporary switch the database
collation back to the original value). In this case, ALTER DATABASE
privilege will be required. This is a backward-incompatible change.
3. INFORMATION_SCHEMA showed non-UTF8 strings
The fix is to generate UTF8-query during the parsing, store it in the object
and show it in the INFORMATION_SCHEMA.
Basically, the idea is to create a copy of the original query convert it to
UTF8. Character set introducers are removed and all text literals are
converted to UTF8.
This UTF8 query is intended to provide user-readable output. It must not be
used to recreate the object. Specialized SHOW CREATE statements should be
used for this.
The reason for this limitation is the following: the original query can
contain symbols from several character sets (by means of character set
introducers).
Example:
- original query:
CREATE VIEW v1 AS SELECT _cp1251 'Hello' AS c1;
- UTF8 query (for INFORMATION_SCHEMA):
CREATE VIEW v1 AS SELECT 'Hello' AS c1;
2007-06-28 19:34:54 +02:00
View Create View character_set_client collation_connection
имя_вью_ко р о е у о б о е е о р о е у о б о е е а б о р о е у о б о е е о о р о е у о б о е е о о р о е у о б о е е а б о р о е у о б о е е
2007-04-03 13:13:27 +02:00
create trigger имя_тр г г е р а о р о е у о б о е е
before insert on имя_та б о р о е у о б о е е
select TRIGGER_NAME from information_schema.triggers where
2007-04-04 14:36:58 +02:00
trigger_schema='test';
2007-04-03 13:13:27 +02:00
TRIGGER_NAME
имя_тр г г е р а о р о е у о б о е е
drop trigger имя_тр г г е р а о р о е у о б о е е
create trigger
о е о е о е о е о е о е о е о е а с р о а
before insert on имя_та б о р о е у о б о е е
ERROR 42000: Identifier name 'о е о е о е о е о е о е о е о е а
drop trigger о е о е о е о е о е о е о е о е а с р о а
ERROR 42000: Identifier name 'о е о е о е о е о е о е о е о е а
create procedure имя_пр о е у р о р о е у о б о е е
begin
end;
select ROUTINE_NAME from information_schema.routines where
2007-04-04 14:36:58 +02:00
routine_schema='test';
2007-04-03 13:13:27 +02:00
ROUTINE_NAME
имя_пр о е у р о р о е у о б о е е
drop procedure имя_пр о е у р о р о е у о б о е е
create procedure о е о е о е о е о е о е о е о е а с р о а
begin
end;
ERROR 42000: Identifier name 'о е о е о е о е о е о е о е о е а
create function имя_фу о р о е у о б о е е
returns int
return 0;
select ROUTINE_NAME from information_schema.routines where
2007-04-04 14:36:58 +02:00
routine_schema='test';
2007-04-03 13:13:27 +02:00
ROUTINE_NAME
имя_фу о р о е у о б о е е
drop function имя_фу о р о е у о б о е е
create function о е о е о е о е о е о е о е о е а с р о а
returns int
return 0;
ERROR 42000: Identifier name 'о е о е о е о е о е о е о е о е а
2007-04-04 14:36:58 +02:00
drop view имя_вью_ко р о е у о б о е е
drop table имя_та б о р о е у о б о е е
2007-04-03 13:13:27 +02:00
set names default;
2007-09-28 23:25:47 +02:00
drop table if exists t1,t2,t3;
drop function if exists f1;
create function f1() returns int
begin
declare res int;
create temporary table t3 select 1 i;
set res:= (select count(*) from t1);
drop temporary table t3;
return res;
end|
create table t1 as select 1;
create table t2 as select f1() from t1;
drop table t1,t2;
drop function f1;
2007-11-28 12:37:00 +01:00
create table t1 like information_schema.processlist;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`ID` bigint(4) NOT NULL DEFAULT '0',
`USER` varchar(16) NOT NULL DEFAULT '',
`HOST` varchar(64) NOT NULL DEFAULT '',
`DB` varchar(64) DEFAULT NULL,
`COMMAND` varchar(16) NOT NULL DEFAULT '',
2009-03-17 15:29:16 +01:00
`TIME` int(7) NOT NULL DEFAULT '0',
2007-11-28 12:37:00 +01:00
`STATE` varchar(64) DEFAULT NULL,
`INFO` longtext
) ENGINE=MyISAM DEFAULT CHARSET=utf8
drop table t1;
create temporary table t1 like information_schema.processlist;
show create table t1;
Table Create Table
t1 CREATE TEMPORARY TABLE `t1` (
`ID` bigint(4) NOT NULL DEFAULT '0',
`USER` varchar(16) NOT NULL DEFAULT '',
`HOST` varchar(64) NOT NULL DEFAULT '',
`DB` varchar(64) DEFAULT NULL,
`COMMAND` varchar(16) NOT NULL DEFAULT '',
2009-03-17 15:29:16 +01:00
`TIME` int(7) NOT NULL DEFAULT '0',
2007-11-28 12:37:00 +01:00
`STATE` varchar(64) DEFAULT NULL,
`INFO` longtext
) ENGINE=MyISAM DEFAULT CHARSET=utf8
drop table t1;
create table t1 like information_schema.character_sets;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
2008-11-13 10:50:20 +01:00
`CHARACTER_SET_NAME` varchar(32) NOT NULL DEFAULT '',
`DEFAULT_COLLATE_NAME` varchar(32) NOT NULL DEFAULT '',
2007-11-28 12:37:00 +01:00
`DESCRIPTION` varchar(60) NOT NULL DEFAULT '',
`MAXLEN` bigint(3) NOT NULL DEFAULT '0'
) ENGINE=MEMORY DEFAULT CHARSET=utf8
drop table t1;
2008-02-06 12:55:19 +01:00
# --
# -- Bug#21380: DEFAULT definition not always transfered by CREATE
# -- TABLE/SELECT to the new table.
# --
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
CREATE TABLE t1(
c1 INT DEFAULT 12 COMMENT 'column1',
c2 INT NULL COMMENT 'column2',
c3 INT NOT NULL COMMENT 'column3',
c4 VARCHAR(255) CHARACTER SET utf8 NOT NULL DEFAULT 'a',
c5 VARCHAR(255) COLLATE utf8_unicode_ci NULL DEFAULT 'b',
c6 VARCHAR(255))
2008-02-08 18:06:05 +01:00
COLLATE latin1_bin;
2008-02-06 12:55:19 +01:00
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) DEFAULT '12' COMMENT 'column1',
`c2` int(11) DEFAULT NULL COMMENT 'column2',
`c3` int(11) NOT NULL COMMENT 'column3',
`c4` varchar(255) CHARACTER SET utf8 NOT NULL DEFAULT 'a',
`c5` varchar(255) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT 'b',
2008-02-08 18:06:05 +01:00
`c6` varchar(255) COLLATE latin1_bin DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_bin
2008-02-06 12:55:19 +01:00
CREATE TABLE t2 AS SELECT * FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`c1` int(11) DEFAULT '12' COMMENT 'column1',
`c2` int(11) DEFAULT NULL COMMENT 'column2',
`c3` int(11) NOT NULL COMMENT 'column3',
`c4` varchar(255) CHARACTER SET utf8 NOT NULL DEFAULT 'a',
`c5` varchar(255) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT 'b',
2008-02-08 18:06:05 +01:00
`c6` varchar(255) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL
2008-02-06 12:55:19 +01:00
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
2008-03-14 17:59:03 +01:00
DROP TABLE t1;
2008-02-06 12:55:19 +01:00
# -- End of test case for Bug#21380.
2008-02-14 16:13:40 +01:00
# --
# -- Bug#18834: ALTER TABLE ADD INDEX on table with two timestamp fields
# --
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
DROP TABLE IF EXISTS t3;
CREATE TABLE t1(c1 TIMESTAMP, c2 TIMESTAMP);
SET sql_mode = NO_ZERO_DATE;
CREATE TABLE t2(c1 TIMESTAMP, c2 TIMESTAMP DEFAULT 0);
ERROR 42000: Invalid default value for 'c2'
CREATE TABLE t2(c1 TIMESTAMP, c2 TIMESTAMP);
ERROR 42000: Invalid default value for 'c2'
# -- Check that NULL column still can be created.
CREATE TABLE t2(c1 TIMESTAMP NULL);
# -- Check ALTER TABLE.
ALTER TABLE t1 ADD INDEX(c1);
ERROR 42000: Invalid default value for 'c2'
# -- Check DATETIME.
SET sql_mode = '';
CREATE TABLE t3(c1 DATETIME NOT NULL);
INSERT INTO t3 VALUES (0);
SET sql_mode = TRADITIONAL;
ALTER TABLE t3 ADD INDEX(c1);
ERROR 22007: Incorrect datetime value: '0000-00-00 00:00:00' for column 'c1' at row 1
# -- Cleanup.
SET sql_mode = '';
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
# -- End of Bug#18834.
2008-03-22 09:32:24 +01:00
# --
# -- Bug#34274: Invalid handling of 'DEFAULT 0' for YEAR data type.
# --
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(c1 YEAR DEFAULT 2008, c2 YEAR DEFAULT 0);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` year(4) DEFAULT '2008',
`c2` year(4) DEFAULT '0000'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
INSERT INTO t1 VALUES();
SELECT * FROM t1;
c1 c2
2008 0000
ALTER TABLE t1 MODIFY c1 YEAR DEFAULT 0;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` year(4) DEFAULT '0000',
`c2` year(4) DEFAULT '0000'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
INSERT INTO t1 VALUES();
SELECT * FROM t1;
c1 c2
2008 0000
0000 0000
DROP TABLE t1;
# -- End of Bug#34274
2008-12-23 16:33:46 +01:00
create table `me:i`(id int);
drop table `me:i`;
2008-03-22 09:32:24 +01:00
2009-07-29 10:54:20 +02:00
# --
# -- Bug#45829: CREATE TABLE TRANSACTIONAL PAGE_CHECKSUM ROW_FORMAT=PAGE accepted, does nothing
# --
drop table if exists t1,t2,t3;
create table t1 (a int) transactional=0;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'transactional=0' at line 1
create table t2 (a int) page_checksum=1;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'page_checksum=1' at line 1
create table t3 (a int) row_format=page;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'page' at line 1
# -- End of Bug#45829
2007-03-29 12:58:26 +02:00
End of 5.1 tests
2009-10-15 14:53:06 +02:00
# --
# -- Bug #43054 Assertion `!table->auto_increment_field_not_null'
# -- failed when redefining trigger
CREATE TABLE B (
pk INTEGER AUTO_INCREMENT,
int_key INTEGER NOT NULL,
PRIMARY KEY (pk),
KEY (int_key)
);
INSERT IGNORE INTO B VALUES ('9', '9');
CREATE TABLE IF NOT EXISTS t1 (
`pk` INTEGER NOT NULL AUTO_INCREMENT ,
`int` INTEGER ,
PRIMARY KEY ( `pk` )
) SELECT `pk` , `int_key` FROM B ;
CREATE TRIGGER f BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
INSERT INTO t1 ( `int` ) VALUES (4 ),( 8 ),( 2 ) ;
END ; |
CREATE TABLE IF NOT EXISTS t1 (
`pk` INTEGER NOT NULL AUTO_INCREMENT ,
`int` INTEGER ,
PRIMARY KEY ( `pk` )
) SELECT `pk` , `int_key` FROM B ;
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger.
CREATE TRIGGER f BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
UPDATE A SET `pk`=1 WHERE `pk`=0 ;
END ;|
ERROR 42000: This version of MySQL doesn't yet support 'multiple triggers with the same action time and event for one table'
DROP TABLE t1;
DROP TABLE B;
2009-12-09 13:15:35 +01:00
#
# Bug #47107 assert in notify_shared_lock on incorrect
# CREATE TABLE , HANDLER
2009-12-09 13:27:24 +01:00
#
2009-12-09 13:15:35 +01:00
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(f1 integer);
# The following CREATE TABLEs before gave an assert.
HANDLER t1 OPEN AS A;
CREATE TABLE t1 SELECT 1 AS f2;
ERROR 42S01: Table 't1' already exists
HANDLER t1 OPEN AS A;
CREATE TABLE t1(f1 integer);
ERROR 42S01: Table 't1' already exists
CREATE TABLE t2(f1 integer);
HANDLER t1 OPEN AS A;
CREATE TABLE t1 LIKE t2;
ERROR 42S01: Table 't1' already exists
DROP TABLE t2;
DROP TABLE t1;
2010-05-05 12:17:07 +02:00
#
# Bug #48800 CREATE TABLE t...SELECT fails if t is a
# temporary table
#
CREATE TEMPORARY TABLE t1 (a INT);
CREATE TABLE t1 (a INT);
CREATE TEMPORARY TABLE t2 (a INT);
CREATE VIEW t2 AS SELECT 1;
CREATE TABLE t3 (a INT);
CREATE TEMPORARY TABLE t3 SELECT 1;
CREATE TEMPORARY TABLE t4 (a INT);
CREATE TABLE t4 AS SELECT 1;
DROP TEMPORARY TABLE t1, t2, t3, t4;
DROP TABLE t1, t3, t4;
DROP VIEW t2;
2010-05-05 23:28:58 +02:00
#
# Bug #49193 CREATE TABLE reacts differently depending
# on whether data is selected or not
#
CREATE TEMPORARY TABLE t2 (ID INT);
INSERT INTO t2 VALUES (1),(2),(3);
CREATE TEMPORARY TABLE t1 (ID INT);
CREATE TABLE IF NOT EXISTS t1 (ID INT);
INSERT INTO t1 SELECT * FROM t2;
SELECT * FROM t1;
ID
1
2
3
DROP TEMPORARY TABLE t1;
SELECT * FROM t1;
ID
DROP TABLE t1;
CREATE TEMPORARY TABLE t1 (ID INT);
CREATE TABLE IF NOT EXISTS t1 SELECT * FROM t2;
SELECT * FROM t1;
ID
DROP TEMPORARY TABLE t1;
SELECT * FROM t1;
ID
1
2
3
DROP TABLE t1;
CREATE TEMPORARY TABLE t1 (ID INT);
CREATE TABLE t1 SELECT * FROM t2;
SELECT * FROM t1;
ID
DROP TEMPORARY TABLE t1;
SELECT * FROM t1;
ID
1
2
3
DROP TABLE t1;
DROP TEMPORARY TABLE t2;
2010-06-11 10:14:38 +02:00
#
# Bug #22909 "Using CREATE ... LIKE is possible to create field
# with invalid default value"
#
# Altough original bug report suggests to use older version of MySQL
# for producing .FRM with invalid defaults we use sql_mode to achieve
# the same effect.
drop tables if exists t1, t2;
# Attempt to create table with invalid default should fail in normal mode
create table t1 (dt datetime default '2008-02-31 00:00:00');
ERROR 42000: Invalid default value for 'dt'
set @old_mode= @@sql_mode;
set @@sql_mode='ALLOW_INVALID_DATES';
# The same should be possible in relaxed mode
create table t1 (dt datetime default '2008-02-31 00:00:00');
set @@sql_mode= @old_mode;
# In normal mode attempt to create copy of table with invalid
# default should fail
create table t2 like t1;
ERROR 42000: Invalid default value for 'dt'
set @@sql_mode='ALLOW_INVALID_DATES';
# But should work in relaxed mode
create table t2 like t1;
# Check that table definitions match
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`dt` datetime DEFAULT '2008-02-31 00:00:00'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`dt` datetime DEFAULT '2008-02-31 00:00:00'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
set @@sql_mode= @old_mode;
drop tables t1, t2;
