mirror of
https://github.com/MariaDB/server.git
synced 2025-02-01 19:41:47 +01:00
810efe1245
------------------------------------------------------------------------
r2867 | marko | 2008-10-24 10:24:17 +0300 (Fri, 24 Oct 2008) | 2 lines
branches/zip: ChangeLog: Document r2763, r2794, r2683, r2799, r2809, r2866.
------------------------------------------------------------------------
r2869 | vasil | 2008-10-24 11:14:16 +0300 (Fri, 24 Oct 2008) | 4 lines
branches/zip:
White space cleanup in ChangeLog
------------------------------------------------------------------------
r2870 | vasil | 2008-10-24 13:36:14 +0300 (Fri, 24 Oct 2008) | 8 lines
branches/zip:
Remove a statement that causes the innodb-index test to fail.
The change in behavior was introduced in MySQL BZR-r2738.
Suggested by: Marko
------------------------------------------------------------------------
r2871 | vasil | 2008-10-24 13:48:38 +0300 (Fri, 24 Oct 2008) | 5 lines
branches/zip:
Adjust mysql-test/patches/innodb-index.diff after the change to
mysql-test/innodb-index.(test|result) in r2870.
------------------------------------------------------------------------
r2878 | calvin | 2008-10-27 11:05:42 +0200 (Mon, 27 Oct 2008) | 8 lines
branches/zip: port the fix of Bug#19424 - InnoDB: Possibly a memory
overrun of the buffer being freed with 64-bit Microsoft Visual C++.
The changed file:
CMakeLists.txt: Removing Win64 compiler optimizations for all
innodb/mem/* files.
------------------------------------------------------------------------
r2884 | vasil | 2008-10-27 11:48:46 +0200 (Mon, 27 Oct 2008) | 7 lines
branches/zip:
ChangeLog:
Add entry for the fix of Bug#19424 InnoDB: Possibly a memory overrun of
the buffer being freed (64-bit Visual C)
------------------------------------------------------------------------
r2886 | calvin | 2008-10-27 22:39:11 +0200 (Mon, 27 Oct 2008) | 8 lines
branches/zip: This patch is to solve the issue that file handles can
not cross DLL/EXE boundaries on Windows. In builtin InnoDB, it makes
call to MySQL server for creating tmp files. innobase_mysql_tmpfile
is now rewritten for the plugin.
rb://5
Approved by: Marko
------------------------------------------------------------------------
r2887 | calvin | 2008-10-27 22:48:29 +0200 (Mon, 27 Oct 2008) | 44 lines
branches/zip: implement the delayloading of externals for the plugin
on Windows, which includes:
* Load mysqld.map and insert all symbol/address pairs into hash for
quick access
* Resolves all external data variables. The delayloading mechanism
in MSVC does not support automatic imports of data variables.
A workaround is to explicitly handle the data import using the delay
loader during the initialization of the plugin.
* Resolves all external functions during run-time, by implementing
the delayed loading helper function delayLoadHelper2, which is
called by run-time as well as HrLoadAllImportsForDll.
The delay loader reuses the hash implementation in InnoDB. The normal
hash_create (in hash0hash.c) creates hash tables in buffer pool. But
the delay loader is invoked before the engine is initialized, and
buffer pools are not ready yet. Instead, the delay loader has its own
implementation of hash_create() and hash_table_free(), called
wdl_hash_create() and wdl_hash_table_free().
This patch should be used with other two patches in order to build
a dynamically linked plugin on Windows:
* patch for tmpfile functions (r2886)
* patch for "build" files (to be committed)
The list of file changed:
handler/handler0vars.h: new file, defines a list of external data
variables (no external functions).
handler/win_delay_loader.cc: new file, the implementation of the delay
loader for Windows plugin.
handler/ha_innodb.cc: add a header file, and changes for copying the
system variables.
handler/handler0alter.cc: add a header file
handler/i_s.cc: add a header file
rb://27
Reviewed by: Sunny, Marko
Approved by: Sunny
------------------------------------------------------------------------
r2888 | calvin | 2008-10-28 01:51:49 +0200 (Tue, 28 Oct 2008) | 25 lines
branches/zip: for building dynamic plugin on Windows, ha_innodb.dll,
when INNODB_DYNAMIC_PLUGIN is specified.
The changes are:
CMakeLists.txt: add project ha_innodb for dynamic plugin on Windows.
ha_innodb depends on project mysqld.
ha_innodb.def: a new file with standard exports for a dynamic plugin.
Two new files will be added:
* sql/mysqld.def: .def file for 32-bit compiler
* sql/mysqld_x64.def: .def file for x64 compiler
It is also required to apply a patch to the MySQL source tree. The
patch is described in win-plugin/README:
win-plugin/win-plugin.diff - a patch to be applied to MySQL source
tree. When applied, the following files will be modified:
* CMakeLists.txt: add INNODB_DYNAMIC_PLUGIN and _USE_32BIT_TIME_T
* sql/CMakeLists.txt: add mysqld.def or mysqld_x64.def for mysqld
* win/configure.js: add INNODB_DYNAMIC_PLUGIN
* win/build-vs71.bat: provide an option to specify CMAKE_BUILD_TYPE
* win/build-vs8.bat: provide an option to specify CMAKE_BUILD_TYPE
* win/build-vs8_x64.bat: provide an option to specify CMAKE_BUILD_TYPE
------------------------------------------------------------------------
r2894 | marko | 2008-10-28 08:36:39 +0200 (Tue, 28 Oct 2008) | 4 lines
branches/zip: dict_str_starts_with_keyword(): Removed this unused function.
Spotted by Sunny.
------------------------------------------------------------------------
r2895 | vasil | 2008-10-28 08:40:45 +0200 (Tue, 28 Oct 2008) | 6 lines
branches/zip:
ChangeLog:
add entry for the Windows plugin.
------------------------------------------------------------------------
r2917 | marko | 2008-10-28 23:53:23 +0200 (Tue, 28 Oct 2008) | 3 lines
branches/zip: innodb_plugin_init(): Do not copy session variables,
even when the variable is a global variable in the built-in InnoDB.
------------------------------------------------------------------------
r2918 | calvin | 2008-10-29 00:08:11 +0200 (Wed, 29 Oct 2008) | 2 lines
branches/zip: fix a problem introduced in r2917 - dyn is not
initialized. Move the check into for().
------------------------------------------------------------------------
r2922 | calvin | 2008-10-29 08:29:01 +0200 (Wed, 29 Oct 2008) | 16 lines
branches/zip: fix issue #102 - Windows plugin: resolve dbug functions
during run-time.
Implement wrapper functions in the plugin. The plugin will get the
function entries from mysqld.exe during the init, and invoke the
corresponding functions (in mysqld.exe). The list of functions are:
_db_pargs_
_db_doprnt_
_db_enter_
_db_return_
_db_dump_
rb://38
Approved by: Marko
------------------------------------------------------------------------
r2923 | marko | 2008-10-29 09:52:30 +0200 (Wed, 29 Oct 2008) | 1 line
branches/zip: ChangeLog: Mention Bug #27276.
------------------------------------------------------------------------
r2925 | calvin | 2008-10-29 10:09:41 +0200 (Wed, 29 Oct 2008) | 16 lines
branches/zip: change function names in sql/mysqld.def in order
to work with 5.1.29-rc.
In 5.1.29, the following function names are changed:
_hash_init
hash_free
hash_search
hash_delete
changed to
_my_hash_init
my_hash_free
my_hash_search
my_hash_delete
Approved by: Marko (on IM)
------------------------------------------------------------------------
r2927 | marko | 2008-10-29 11:43:23 +0200 (Wed, 29 Oct 2008) | 4 lines
branches/zip: ha_innodb.cc: Make some functions static, so that they will
not be compiled as weak global symbols. These functions must not be
redirected to the built-in InnoDB.
------------------------------------------------------------------------
r2928 | michael | 2008-10-29 19:20:10 +0200 (Wed, 29 Oct 2008) | 4 lines
Remove unnecessary assert
Approved by: Heikki, over IM
------------------------------------------------------------------------
r2930 | marko | 2008-10-29 21:39:24 +0200 (Wed, 29 Oct 2008) | 33 lines
branches/zip: Merge revisions 2854:2929 from branches/5.1,
except r2924, which was merged from branches/zip r2866 to branches/5.1
and except r2879 which was merged separately by Calvin:
------------------------------------------------------------------------
r2902 | vasil | 2008-10-28 12:10:25 +0200 (Tue, 28 Oct 2008) | 10 lines
branches/5.1:
Fix Bug#38189 innodb_stats_on_metadata missing
Make the variable innodb_stats_on_metadata visible to the users and
also settable at runtime. Previously it was only "visible" as a command
line startup option to mysqld.
Approved by: Marko (https://svn.innodb.com/rb/r/36)
------------------------------------------------------------------------
r2929 | marko | 2008-10-29 21:26:14 +0200 (Wed, 29 Oct 2008) | 13 lines
branches/5.1: dtype_get_sql_null_size(): return the correct storage
size of a SQL NULL column. (Bug #40369)
When MySQL Bug #20877 was fixed in r834, this function was
accidentally modified to return 0 or 1. Apparently, the only impact of
this bug is that fixed-length columns cannot be updated in-place from
or to SQL NULL, even in ROW_FORMAT=REDUNDANT. After this fix,
fixed-length columns in ROW_FORMAT=REDUNDANT will have a constant
storage size as they should, no matter if NULL or non-NULL. The bug
caused fixed-length NULL columns to occupy 1 byte.
rb://37 approved by Heikki over IM.
------------------------------------------------------------------------
------------------------------------------------------------------------
r2931 | vasil | 2008-10-29 22:10:40 +0200 (Wed, 29 Oct 2008) | 4 lines
branches/zip:
Add 2 ChangeLog entries for the 2 bugfixes that were merged from branches/5.1.
------------------------------------------------------------------------
r2935 | vasil | 2008-10-30 12:17:23 +0200 (Thu, 30 Oct 2008) | 17 lines
branches/zip:
Fix "Bug#40360 Binlog related errors with binlog off" in InnoDB code in order
to have a Bug#40360-free InnoDB Plugin 1.0.2.
The fix does check whether binary logging is enabled in MySQL by accessing the
opt_bin_log global variable that is defined in sql/mysqld.cc.
In case MySQL does develop another solution to this via Bug#40360 then we can
revert this patch (except the mysql-tests).
The windows-plugin part of this fix will be committed as a separate commit to
ease eventual merge into branches/5.1 [note from the future: the separate
commit went into r2936].
Approved by: Marko (https://svn.innodb.com/rb/r/39)
------------------------------------------------------------------------
r2936 | vasil | 2008-10-30 12:24:09 +0200 (Thu, 30 Oct 2008) | 7 lines
branches/zip:
Followup to r2935: add the Windows Delay Loader stuff for the MySQL
variable that we are accessing. If someday we have another solution for
Bug#40360 Binlog related errors with binlog off
then this should also be reverted.
------------------------------------------------------------------------
r2937 | vasil | 2008-10-30 12:28:47 +0200 (Thu, 30 Oct 2008) | 4 lines
branches/zip:
Add ChangeLog entry for Bug#40360 Binlog related errors with binlog off
------------------------------------------------------------------------
r2938 | vasil | 2008-10-30 12:33:28 +0200 (Thu, 30 Oct 2008) | 5 lines
branches/zip:
Non-functional change: convert handler/handler0vars.h and
handler/win_delay_loader.cc from \r\n (dos) to \n (unix) line terminators.
------------------------------------------------------------------------
r2939 | marko | 2008-10-30 12:38:18 +0200 (Thu, 30 Oct 2008) | 2 lines
branches/zip: Set svn:eol-style native on some recently added text files.
------------------------------------------------------------------------
r2940 | marko | 2008-10-30 12:46:21 +0200 (Thu, 30 Oct 2008) | 1 line
branches/zip: ChangeLog, ha_innodb.def: Set svn:eol-style native
------------------------------------------------------------------------
r2941 | vasil | 2008-10-30 19:34:27 +0200 (Thu, 30 Oct 2008) | 4 lines
branches/zip:
Increment the InnoDB Plugin version from 1.0.1 to 1.0.2.
------------------------------------------------------------------------
r2943 | sunny | 2008-10-31 09:40:29 +0200 (Fri, 31 Oct 2008) | 15 lines
branches/zip:
1. We add a vector of locks to trx_t. This array contains the autoinc
locks granted to a transaction. There is one per table.
2. We enforce releasing of these locks in the reverse order from the
one in which they are acquired. The assumption is that since the
AUTOINC locks are statement level locks. Nested statements introduced
by triggers are stacked it should hold.
There was some cleanup done to the vector code too by adding const and
some new functions. Rename dict_table_t::auto_inc_lock to autoinc_lock.
Fix Bug#26316 Triggers create duplicate entries on auto-increment columns
rb://22
------------------------------------------------------------------------
r2944 | vasil | 2008-10-31 09:44:16 +0200 (Fri, 31 Oct 2008) | 12 lines
branches/zip:
Revert our temporary fix for "Bug#40360 Binlog related errors with binlog off"
(r2935, r2936) and deploy MySQL's one, but put the function
mysql_bin_log_is_engaged() inside mysql_addons.cc instead of in mysql's log.cc
and use a different name for it so there is no collision when MySQL adds this
function in log.cc.
[note from the future: the windows part of this patch went into r2947]
Approved by: Marko (https://svn.innodb.com/rb/r/41/)
------------------------------------------------------------------------
r2945 | sunny | 2008-10-31 09:44:45 +0200 (Fri, 31 Oct 2008) | 2 lines
branches/zip: Update ChangeLog with r2943 info.
------------------------------------------------------------------------
r2946 | marko | 2008-10-31 10:18:47 +0200 (Fri, 31 Oct 2008) | 2 lines
branches/zip: Revert the unintended change to univ.i that was made in r2943.
------------------------------------------------------------------------
r2947 | calvin | 2008-10-31 10:38:26 +0200 (Fri, 31 Oct 2008) | 6 lines
branches/zip: Windows plugin part of r2944
r2944 has reference to mysql_bin_log.is_open(), which is new in InnoDB.
Add two new entries and remove one duplicate in mysqld.def &
mysqld_x64.def.
------------------------------------------------------------------------
r2948 | vasil | 2008-10-31 11:39:07 +0200 (Fri, 31 Oct 2008) | 9 lines
branches/zip:
Fix Mantis issue#106 plugin init error:InnoDB: stats_on_metadata in static
InnoDB (flags=0x2401) differs from stats_on_metadata in dynamic InnoDB (fl
Ignore the NOSYSVAR flag in addition to ignoring the READONLY flag.
Approved by: Marko (https://svn.innodb.com/rb/r/42/)
------------------------------------------------------------------------
r2949 | vasil | 2008-10-31 11:47:56 +0200 (Fri, 31 Oct 2008) | 4 lines
branches/zip:
White-space cleanup in ChangeLog.
------------------------------------------------------------------------
r2951 | marko | 2008-10-31 14:21:43 +0200 (Fri, 31 Oct 2008) | 4 lines
branches/zip: scripts/install_innodb_plugins_win.sql: New script,
for installing the InnoDB plugins in Windows. Copied from
scripts/install_innodb_plugins.sql.
------------------------------------------------------------------------
r2954 | calvin | 2008-11-04 09:15:26 +0200 (Tue, 04 Nov 2008) | 8 lines
branches/zip: ignore the failure when builtin_innobase_plugin is not
available.
External variable builtin_innobase_plugin is not available when mysqld
does not have a builtin InnoDB. The init of the Windows plugin should
not fail in this case.
Approved by: Marko (on IM)
------------------------------------------------------------------------
r2955 | calvin | 2008-11-04 12:43:14 +0200 (Tue, 04 Nov 2008) | 11 lines
branches/zip: windows plugin - fix references to array variables.
This problem surfaced when running new test innodb_bug40360.test. Both
tx_isolation_names and binlog_format_names are name arrays, and
should be defined as wdl_tx_isolation_names and wdl_binlog_format_names,
not *wdl_tx_isolation_names and *wdl_binlog_format_names.
Another array variable is all_charsets, which is already correctly
defined.
Approved by: Marko (on IM)
------------------------------------------------------------------------
r2986 | marko | 2008-11-11 09:28:37 +0200 (Tue, 11 Nov 2008) | 11 lines
branches/zip: ha_innobase::create(): Remove the dependences on
DICT_TF_ZSSIZE_MAX, so that the code can be compiled with a different
uncompressed page size by redefining UNIV_PAGE_SIZE_SHIFT in univ.i.
Currently, the allowed values are 12, 13, or 14 (4k, 8k, 16k).
Make the default compressed page size half the uncompressed page size.
The previous default was 8 kilobytes, which is the same when compiling
with the default 16k uncompressed page size.
rb://50 approved by Pekka Lampio and Sunny Bains.
------------------------------------------------------------------------
1134 lines
32 KiB
Text
1134 lines
32 KiB
Text
create table t1(a int not null, b int, c char(10) not null, d varchar(20)) engine = innodb;
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insert into t1 values (5,5,'oo','oo'),(4,4,'tr','tr'),(3,4,'ad','ad'),(2,3,'ak','ak');
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commit;
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alter table t1 add index b (b), add index b (b);
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ERROR 42000: Duplicate key name 'b'
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alter table t1 add index (b,b);
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ERROR 42S21: Duplicate column name 'b'
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alter table t1 add index d2 (d);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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KEY `d2` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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explain select * from t1 force index(d2) order by d;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL d2 23 NULL 4
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select * from t1 force index (d2) order by d;
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a b c d
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3 4 ad ad
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2 3 ak ak
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5 5 oo oo
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4 4 tr tr
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alter table t1 add unique index (b);
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ERROR 23000: Duplicate entry '4' for key 'b'
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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KEY `d2` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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alter table t1 add index (b);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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KEY `d2` (`d`),
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KEY `b` (`b`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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CREATE TABLE `t1#1`(a INT PRIMARY KEY) ENGINE=InnoDB;
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alter table t1 add unique index (c), add index (d);
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ERROR HY000: Table 'test.t1#1' already exists
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rename table `t1#1` to `t1#2`;
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alter table t1 add unique index (c), add index (d);
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ERROR HY000: Table 'test.t1#2' already exists
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drop table `t1#2`;
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alter table t1 add unique index (c), add index (d);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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explain select * from t1 force index(c) order by c;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL c 10 NULL 4
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alter table t1 add primary key (a), drop index c;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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alter table t1 add primary key (c);
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ERROR 42000: Multiple primary key defined
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alter table t1 drop primary key, add primary key (b);
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ERROR 23000: Duplicate entry '4' for key 'PRIMARY'
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create unique index c on t1 (c);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `b` (`b`),
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KEY `d` (`d`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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explain select * from t1 force index(c) order by c;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL c 10 NULL 4
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select * from t1 force index(c) order by c;
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a b c d
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3 4 ad ad
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2 3 ak ak
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5 5 oo oo
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4 4 tr tr
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alter table t1 drop index b, add index (b);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `d` (`d`),
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KEY `b` (`b`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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insert into t1 values(6,1,'ggg','ggg');
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select * from t1;
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a b c d
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2 3 ak ak
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3 4 ad ad
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4 4 tr tr
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5 5 oo oo
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6 1 ggg ggg
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select * from t1 force index(b) order by b;
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a b c d
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6 1 ggg ggg
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2 3 ak ak
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3 4 ad ad
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4 4 tr tr
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5 5 oo oo
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select * from t1 force index(c) order by c;
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a b c d
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3 4 ad ad
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2 3 ak ak
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6 1 ggg ggg
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5 5 oo oo
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4 4 tr tr
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select * from t1 force index(d) order by d;
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a b c d
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3 4 ad ad
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2 3 ak ak
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6 1 ggg ggg
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5 5 oo oo
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4 4 tr tr
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explain select * from t1 force index(b) order by b;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL b 5 NULL 5
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explain select * from t1 force index(c) order by c;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL c 10 NULL 5
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explain select * from t1 force index(d) order by d;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL d 23 NULL 5
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) NOT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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UNIQUE KEY `c` (`c`),
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KEY `d2` (`d`),
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KEY `d` (`d`),
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KEY `b` (`b`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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drop table t1;
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create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
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insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ad','ad'),(4,4,'afe','afe');
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commit;
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alter table t1 add index (c(2));
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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`c` char(10) DEFAULT NULL,
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`d` varchar(20) DEFAULT NULL,
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PRIMARY KEY (`a`),
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KEY `c` (`c`(2))
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t1 add unique index (d(10));
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `d` (`d`(10)),
|
|
KEY `c` (`c`(2))
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
insert into t1 values(5,1,'ggg','ggg');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 3 ad ad
|
|
4 4 afe afe
|
|
5 1 ggg ggg
|
|
select * from t1 force index(c) order by c;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 3 ad ad
|
|
4 4 afe afe
|
|
5 1 ggg ggg
|
|
select * from t1 force index(d) order by d;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 3 ad ad
|
|
4 4 afe afe
|
|
5 1 ggg ggg
|
|
explain select * from t1 order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort
|
|
explain select * from t1 force index(c) order by c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort
|
|
explain select * from t1 force index(d) order by d;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `d` (`d`(10)),
|
|
KEY `c` (`c`(2))
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t1 drop index d;
|
|
insert into t1 values(8,9,'fff','fff');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 3 ad ad
|
|
4 4 afe afe
|
|
5 1 ggg ggg
|
|
8 9 fff fff
|
|
select * from t1 force index(c) order by c;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 3 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
5 1 ggg ggg
|
|
explain select * from t1 order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
|
|
explain select * from t1 force index(c) order by c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
|
|
explain select * from t1 order by d;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `c` (`c`(2))
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
|
|
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe');
|
|
commit;
|
|
alter table t1 add unique index (b,c);
|
|
insert into t1 values(8,9,'fff','fff');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
select * from t1 force index(b) order by b;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 16 NULL 5
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `b` (`b`,`c`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t1 add index (b,c);
|
|
insert into t1 values(11,11,'kkk','kkk');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
11 11 kkk kkk
|
|
select * from t1 force index(b) order by b;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
11 11 kkk kkk
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 16 NULL 6
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `b` (`b`,`c`),
|
|
KEY `b_2` (`b`,`c`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t1 add unique index (c,d);
|
|
insert into t1 values(13,13,'yyy','aaa');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
11 11 kkk kkk
|
|
13 13 yyy aaa
|
|
select * from t1 force index(b) order by b;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
11 11 kkk kkk
|
|
13 13 yyy aaa
|
|
select * from t1 force index(c) order by c;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
11 11 kkk kkk
|
|
13 13 yyy aaa
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 16 NULL 7
|
|
explain select * from t1 force index(c) order by c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL c 34 NULL 7
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `b` (`b`,`c`),
|
|
UNIQUE KEY `c` (`c`,`d`),
|
|
KEY `b_2` (`b`,`c`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int not null, c int, primary key (a), key (b)) engine = innodb;
|
|
create table t3(a int not null, c int not null, d int, primary key (a), key (c)) engine = innodb;
|
|
create table t4(a int not null, d int not null, e int, primary key (a), key (d)) engine = innodb;
|
|
create table t2(a int not null, b int not null, c int not null, d int not null, e int,
|
|
foreign key (b) references t1(b) on delete cascade,
|
|
foreign key (c) references t3(c), foreign key (d) references t4(d))
|
|
engine = innodb;
|
|
alter table t1 drop index b;
|
|
ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint
|
|
alter table t3 drop index c;
|
|
ERROR HY000: Cannot drop index 'c': needed in a foreign key constraint
|
|
alter table t4 drop index d;
|
|
ERROR HY000: Cannot drop index 'd': needed in a foreign key constraint
|
|
alter table t2 drop index b;
|
|
ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint
|
|
alter table t2 drop index b, drop index c, drop index d;
|
|
ERROR HY000: Cannot drop index 'b': needed in a foreign key constraint
|
|
create unique index dc on t2 (d,c);
|
|
create index dc on t1 (b,c);
|
|
alter table t2 add primary key (a);
|
|
insert into t1 values (1,1,1);
|
|
insert into t3 values (1,1,1);
|
|
insert into t4 values (1,1,1);
|
|
insert into t2 values (1,1,1,1,1);
|
|
commit;
|
|
alter table t4 add constraint dc foreign key (a) references t1(a);
|
|
show create table t4;
|
|
Table Create Table
|
|
t4 CREATE TABLE `t4` (
|
|
`a` int(11) NOT NULL,
|
|
`d` int(11) NOT NULL,
|
|
`e` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `d` (`d`),
|
|
CONSTRAINT `dc` FOREIGN KEY (`a`) REFERENCES `t1` (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t3 add constraint dc foreign key (a) references t1(a);
|
|
ERROR HY000: Can't create table '#sql-temporary' (errno: 121)
|
|
show create table t3;
|
|
Table Create Table
|
|
t3 CREATE TABLE `t3` (
|
|
`a` int(11) NOT NULL,
|
|
`c` int(11) NOT NULL,
|
|
`d` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `c` (`c`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
alter table t2 drop index b, add index (b);
|
|
show create table t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) NOT NULL,
|
|
`c` int(11) NOT NULL,
|
|
`d` int(11) NOT NULL,
|
|
`e` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `dc` (`d`,`c`),
|
|
KEY `c` (`c`),
|
|
KEY `b` (`b`),
|
|
CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`b`) ON DELETE CASCADE,
|
|
CONSTRAINT `t2_ibfk_2` FOREIGN KEY (`c`) REFERENCES `t3` (`c`),
|
|
CONSTRAINT `t2_ibfk_3` FOREIGN KEY (`d`) REFERENCES `t4` (`d`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
delete from t1;
|
|
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `dc` FOREIGN KEY (`a`) REFERENCES `t1` (`a`))
|
|
drop index dc on t4;
|
|
ERROR 42000: Can't DROP 'dc'; check that column/key exists
|
|
alter table t3 drop foreign key dc;
|
|
ERROR HY000: Error on rename of './test/t3' to '#sql2-temporary' (errno: 152)
|
|
alter table t4 drop foreign key dc;
|
|
select * from t2;
|
|
a b c d e
|
|
1 1 1 1 1
|
|
delete from t1;
|
|
select * from t2;
|
|
a b c d e
|
|
drop table t2,t4,t3,t1;
|
|
create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb default charset=utf8;
|
|
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,2,'ad','ad'),(4,4,'afe','afe');
|
|
commit;
|
|
alter table t1 add unique index (b);
|
|
ERROR 23000: Duplicate entry '2' for key 'b'
|
|
insert into t1 values(8,9,'fff','fff');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8
|
|
alter table t1 add index (b);
|
|
insert into t1 values(10,10,'kkk','iii');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
select * from t1 force index(b) order by b;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 5 NULL 6
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `b` (`b`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8
|
|
alter table t1 add unique index (c), add index (d);
|
|
insert into t1 values(11,11,'aaa','mmm');
|
|
select * from t1;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
11 11 aaa mmm
|
|
select * from t1 force index(b) order by b;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
11 11 aaa mmm
|
|
select * from t1 force index(c) order by c;
|
|
a b c d
|
|
11 11 aaa mmm
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
select * from t1 force index(d) order by d;
|
|
a b c d
|
|
1 1 ab ab
|
|
2 2 ac ac
|
|
3 2 ad ad
|
|
4 4 afe afe
|
|
8 9 fff fff
|
|
10 10 kkk iii
|
|
11 11 aaa mmm
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 5 NULL 7
|
|
explain select * from t1 force index(c) order by c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL c 31 NULL 7
|
|
explain select * from t1 force index(d) order by d;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL d 63 NULL 7
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `c` (`c`),
|
|
KEY `b` (`b`),
|
|
KEY `d` (`d`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
drop table t1;
|
|
create table t1(a int not null, b int) engine = innodb;
|
|
insert into t1 values (1,1),(1,1),(1,1),(1,1);
|
|
alter table t1 add unique index (a);
|
|
ERROR 23000: Duplicate entry '1' for key 'a'
|
|
alter table t1 add unique index (b);
|
|
ERROR 23000: Duplicate entry '1' for key 'b'
|
|
alter table t1 add unique index (a), add unique index(b);
|
|
ERROR 23000: Duplicate entry '1' for key 'a'
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, c int not null,b int, primary key(a), unique key(c), key(b)) engine = innodb;
|
|
alter table t1 drop index c, drop index b;
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`c` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int, primary key(a)) engine = innodb;
|
|
alter table t1 add index (b);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
KEY `b` (`b`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int, c char(10), d varchar(20), primary key (a)) engine = innodb;
|
|
insert into t1 values (1,1,'ab','ab'),(2,2,'ac','ac'),(3,3,'ac','ac'),(4,4,'afe','afe'),(5,4,'affe','affe');
|
|
alter table t1 add unique index (b), add unique index (c), add unique index (d);
|
|
ERROR 23000: Duplicate entry '4' for key 'b'
|
|
alter table t1 add unique index (c), add unique index (b), add index (d);
|
|
ERROR 23000: Duplicate entry 'ac' for key 'c'
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`c` char(10) DEFAULT NULL,
|
|
`d` varchar(20) DEFAULT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
create table t1(a int not null, b int not null, c int, primary key (a), key(c)) engine=innodb;
|
|
insert into t1 values (5,1,5),(4,2,4),(3,3,3),(2,4,2),(1,5,1);
|
|
alter table t1 add unique index (b);
|
|
insert into t1 values (10,20,20),(11,19,19),(12,18,18),(13,17,17);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) NOT NULL,
|
|
`c` int(11) DEFAULT NULL,
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `b` (`b`),
|
|
KEY `c` (`c`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
explain select * from t1 force index(c) order by c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL c 5 NULL 9
|
|
explain select * from t1 order by a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 9
|
|
explain select * from t1 force index(b) order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL b 4 NULL 9
|
|
select * from t1 order by a;
|
|
a b c
|
|
1 5 1
|
|
2 4 2
|
|
3 3 3
|
|
4 2 4
|
|
5 1 5
|
|
10 20 20
|
|
11 19 19
|
|
12 18 18
|
|
13 17 17
|
|
select * from t1 force index(b) order by b;
|
|
a b c
|
|
5 1 5
|
|
4 2 4
|
|
3 3 3
|
|
2 4 2
|
|
1 5 1
|
|
13 17 17
|
|
12 18 18
|
|
11 19 19
|
|
10 20 20
|
|
select * from t1 force index(c) order by c;
|
|
a b c
|
|
1 5 1
|
|
2 4 2
|
|
3 3 3
|
|
4 2 4
|
|
5 1 5
|
|
13 17 17
|
|
12 18 18
|
|
11 19 19
|
|
10 20 20
|
|
drop table t1;
|
|
create table t1(a int not null, b int not null) engine=innodb;
|
|
insert into t1 values (1,1);
|
|
alter table t1 add primary key(b);
|
|
insert into t1 values (2,2);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) NOT NULL,
|
|
PRIMARY KEY (`b`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
select * from t1;
|
|
a b
|
|
1 1
|
|
2 2
|
|
explain select * from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
|
|
explain select * from t1 order by a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using filesort
|
|
explain select * from t1 order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 2
|
|
checksum table t1;
|
|
Table Checksum
|
|
test.t1 582702641
|
|
drop table t1;
|
|
create table t1(a int not null) engine=innodb;
|
|
insert into t1 values (1);
|
|
alter table t1 add primary key(a);
|
|
insert into t1 values (2);
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL,
|
|
PRIMARY KEY (`a`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
commit;
|
|
select * from t1;
|
|
a
|
|
1
|
|
2
|
|
explain select * from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
|
|
explain select * from t1 order by a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
|
|
drop table t1;
|
|
create table t2(d varchar(17) primary key) engine=innodb default charset=utf8;
|
|
create table t3(a int primary key) engine=innodb;
|
|
insert into t3 values(22),(44),(33),(55),(66);
|
|
insert into t2 values ('jejdkrun87'),('adfd72nh9k'),
|
|
('adfdpplkeock'),('adfdijnmnb78k'),('adfdijn0loKNHJik');
|
|
create table t1(a int, b blob, c text, d text not null)
|
|
engine=innodb default charset = utf8;
|
|
insert into t1
|
|
select a,left(repeat(d,100*a),65535),repeat(d,20*a),d from t2,t3;
|
|
drop table t2, t3;
|
|
select count(*) from t1 where a=44;
|
|
count(*)
|
|
5
|
|
select a,
|
|
length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1;
|
|
a length(b) b=left(repeat(d,100*a),65535) length(c) c=repeat(d,20*a) d
|
|
22 22000 1 4400 1 adfd72nh9k
|
|
22 35200 1 7040 1 adfdijn0loKNHJik
|
|
22 28600 1 5720 1 adfdijnmnb78k
|
|
22 26400 1 5280 1 adfdpplkeock
|
|
22 22000 1 4400 1 jejdkrun87
|
|
33 33000 1 6600 1 adfd72nh9k
|
|
33 52800 1 10560 1 adfdijn0loKNHJik
|
|
33 42900 1 8580 1 adfdijnmnb78k
|
|
33 39600 1 7920 1 adfdpplkeock
|
|
33 33000 1 6600 1 jejdkrun87
|
|
44 44000 1 8800 1 adfd72nh9k
|
|
44 65535 1 14080 1 adfdijn0loKNHJik
|
|
44 57200 1 11440 1 adfdijnmnb78k
|
|
44 52800 1 10560 1 adfdpplkeock
|
|
44 44000 1 8800 1 jejdkrun87
|
|
55 55000 1 11000 1 adfd72nh9k
|
|
55 65535 1 17600 1 adfdijn0loKNHJik
|
|
55 65535 1 14300 1 adfdijnmnb78k
|
|
55 65535 1 13200 1 adfdpplkeock
|
|
55 55000 1 11000 1 jejdkrun87
|
|
66 65535 1 13200 1 adfd72nh9k
|
|
66 65535 1 21120 1 adfdijn0loKNHJik
|
|
66 65535 1 17160 1 adfdijnmnb78k
|
|
66 65535 1 15840 1 adfdpplkeock
|
|
66 65535 1 13200 1 jejdkrun87
|
|
alter table t1 add primary key (a), add key (b(20));
|
|
ERROR 23000: Duplicate entry '22' for key 'PRIMARY'
|
|
delete from t1 where a%2;
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
alter table t1 add primary key (a,b(255),c(255)), add key (b(767));
|
|
select count(*) from t1 where a=44;
|
|
count(*)
|
|
5
|
|
select a,
|
|
length(b),b=left(repeat(d,100*a),65535),length(c),c=repeat(d,20*a),d from t1;
|
|
a length(b) b=left(repeat(d,100*a),65535) length(c) c=repeat(d,20*a) d
|
|
22 22000 1 4400 1 adfd72nh9k
|
|
22 35200 1 7040 1 adfdijn0loKNHJik
|
|
22 28600 1 5720 1 adfdijnmnb78k
|
|
22 26400 1 5280 1 adfdpplkeock
|
|
22 22000 1 4400 1 jejdkrun87
|
|
44 44000 1 8800 1 adfd72nh9k
|
|
44 65535 1 14080 1 adfdijn0loKNHJik
|
|
44 57200 1 11440 1 adfdijnmnb78k
|
|
44 52800 1 10560 1 adfdpplkeock
|
|
44 44000 1 8800 1 jejdkrun87
|
|
66 65535 1 13200 1 adfd72nh9k
|
|
66 65535 1 21120 1 adfdijn0loKNHJik
|
|
66 65535 1 17160 1 adfdijnmnb78k
|
|
66 65535 1 15840 1 adfdpplkeock
|
|
66 65535 1 13200 1 jejdkrun87
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL DEFAULT '0',
|
|
`b` blob NOT NULL,
|
|
`c` text NOT NULL,
|
|
`d` text NOT NULL,
|
|
PRIMARY KEY (`a`,`b`(255),`c`(255)),
|
|
KEY `b` (`b`(767))
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8
|
|
check table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
explain select * from t1 where b like 'adfd%';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL b NULL NULL NULL 15 Using where
|
|
create table t2(a int, b varchar(255), primary key(a,b)) engine=innodb;
|
|
insert into t2 select a,left(b,255) from t1;
|
|
drop table t1;
|
|
rename table t2 to t1;
|
|
set innodb_lock_wait_timeout=1;
|
|
begin;
|
|
select a from t1 limit 1 for update;
|
|
a
|
|
22
|
|
set innodb_lock_wait_timeout=1;
|
|
create index t1ba on t1 (b,a);
|
|
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
|
|
commit;
|
|
begin;
|
|
select a from t1 limit 1 lock in share mode;
|
|
a
|
|
22
|
|
create index t1ba on t1 (b,a);
|
|
drop index t1ba on t1;
|
|
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
|
|
commit;
|
|
explain select a from t1 order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL t1ba 261 NULL 15 Using index
|
|
select a,sleep(2+a/100) from t1 order by b limit 3;
|
|
select sleep(1);
|
|
sleep(1)
|
|
0
|
|
drop index t1ba on t1;
|
|
a sleep(2+a/100)
|
|
22 0
|
|
44 0
|
|
66 0
|
|
explain select a from t1 order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 261 NULL 15 Using index; Using filesort
|
|
select a from t1 order by b limit 3;
|
|
a
|
|
22
|
|
66
|
|
44
|
|
commit;
|
|
drop table t1;
|
|
set global innodb_file_per_table=on;
|
|
set global innodb_file_format='Barracuda';
|
|
create table t1(a blob,b blob,c blob,d blob,e blob,f blob,g blob,h blob,
|
|
i blob,j blob,k blob,l blob,m blob,n blob,o blob,p blob,
|
|
q blob,r blob,s blob,t blob,u blob)
|
|
engine=innodb row_format=dynamic;
|
|
create index t1a on t1 (a(1));
|
|
create index t1b on t1 (b(1));
|
|
create index t1c on t1 (c(1));
|
|
create index t1d on t1 (d(1));
|
|
create index t1e on t1 (e(1));
|
|
create index t1f on t1 (f(1));
|
|
create index t1g on t1 (g(1));
|
|
create index t1h on t1 (h(1));
|
|
create index t1i on t1 (i(1));
|
|
create index t1j on t1 (j(1));
|
|
create index t1k on t1 (k(1));
|
|
create index t1l on t1 (l(1));
|
|
create index t1m on t1 (m(1));
|
|
create index t1n on t1 (n(1));
|
|
create index t1o on t1 (o(1));
|
|
create index t1p on t1 (p(1));
|
|
create index t1q on t1 (q(1));
|
|
create index t1r on t1 (r(1));
|
|
create index t1s on t1 (s(1));
|
|
create index t1t on t1 (t(1));
|
|
create index t1u on t1 (u(1));
|
|
ERROR HY000: Too big row
|
|
create index t1ut on t1 (u(1), t(1));
|
|
ERROR HY000: Too big row
|
|
create index t1st on t1 (s(1), t(1));
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` blob,
|
|
`b` blob,
|
|
`c` blob,
|
|
`d` blob,
|
|
`e` blob,
|
|
`f` blob,
|
|
`g` blob,
|
|
`h` blob,
|
|
`i` blob,
|
|
`j` blob,
|
|
`k` blob,
|
|
`l` blob,
|
|
`m` blob,
|
|
`n` blob,
|
|
`o` blob,
|
|
`p` blob,
|
|
`q` blob,
|
|
`r` blob,
|
|
`s` blob,
|
|
`t` blob,
|
|
`u` blob,
|
|
KEY `t1a` (`a`(1)),
|
|
KEY `t1b` (`b`(1)),
|
|
KEY `t1c` (`c`(1)),
|
|
KEY `t1d` (`d`(1)),
|
|
KEY `t1e` (`e`(1)),
|
|
KEY `t1f` (`f`(1)),
|
|
KEY `t1g` (`g`(1)),
|
|
KEY `t1h` (`h`(1)),
|
|
KEY `t1i` (`i`(1)),
|
|
KEY `t1j` (`j`(1)),
|
|
KEY `t1k` (`k`(1)),
|
|
KEY `t1l` (`l`(1)),
|
|
KEY `t1m` (`m`(1)),
|
|
KEY `t1n` (`n`(1)),
|
|
KEY `t1o` (`o`(1)),
|
|
KEY `t1p` (`p`(1)),
|
|
KEY `t1q` (`q`(1)),
|
|
KEY `t1r` (`r`(1)),
|
|
KEY `t1s` (`s`(1)),
|
|
KEY `t1t` (`t`(1)),
|
|
KEY `t1st` (`s`(1),`t`(1))
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
|
|
create index t1u on t1 (u(1));
|
|
ERROR HY000: Too big row
|
|
alter table t1 row_format=compact;
|
|
create index t1u on t1 (u(1));
|
|
drop table t1;
|
|
set global innodb_file_per_table=0;
|
|
set global innodb_file_format=Antelope;
|
|
SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
|
|
SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
|
|
CREATE TABLE t1(
|
|
c1 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
CREATE TABLE t2(
|
|
c1 BIGINT(16) NOT NULL,
|
|
c2 BIGINT(12) NOT NULL,
|
|
c3 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3) REFERENCES t1(c1);
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `fk_t2_ca` (`c3`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
CREATE INDEX i_t2_c3_c2 ON t2(c3, c2);
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`),
|
|
KEY `i_t2_c3_c2` (`c3`,`c2`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
|
|
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;
|
|
INSERT INTO t2 VALUES(0,0,0);
|
|
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`))
|
|
INSERT INTO t1 VALUES(0);
|
|
INSERT INTO t2 VALUES(0,0,0);
|
|
DROP TABLE t2;
|
|
CREATE TABLE t2(
|
|
c1 BIGINT(16) NOT NULL,
|
|
c2 BIGINT(12) NOT NULL,
|
|
c3 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1,c2,c3)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3) REFERENCES t1(c1);
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`,`c2`,`c3`),
|
|
KEY `fk_t2_ca` (`c3`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
CREATE INDEX i_t2_c3_c2 ON t2(c3, c2);
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c1` bigint(16) NOT NULL,
|
|
`c2` bigint(12) NOT NULL,
|
|
`c3` bigint(12) NOT NULL,
|
|
PRIMARY KEY (`c1`,`c2`,`c3`),
|
|
KEY `i_t2_c3_c2` (`c3`,`c2`),
|
|
CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
INSERT INTO t2 VALUES(0,0,1);
|
|
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`))
|
|
INSERT INTO t2 VALUES(0,0,0);
|
|
DELETE FROM t1;
|
|
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`) REFERENCES `t1` (`c1`))
|
|
DELETE FROM t2;
|
|
DROP TABLE t2;
|
|
DROP TABLE t1;
|
|
CREATE TABLE t1(
|
|
c1 BIGINT(12) NOT NULL,
|
|
c2 INT(4) NOT NULL,
|
|
PRIMARY KEY (c2,c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
CREATE TABLE t2(
|
|
c1 BIGINT(16) NOT NULL,
|
|
c2 BIGINT(12) NOT NULL,
|
|
c3 BIGINT(12) NOT NULL,
|
|
PRIMARY KEY (c1)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c1);
|
|
ERROR HY000: Can't create table '#sql-temporary' (errno: 150)
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2);
|
|
ERROR HY000: Can't create table '#sql-temporary' (errno: 150)
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1);
|
|
ERROR HY000: Can't create table '#sql-temporary' (errno: 150)
|
|
ALTER TABLE t1 MODIFY COLUMN c2 BIGINT(12) NOT NULL;
|
|
ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
|
|
FOREIGN KEY (c3,c2) REFERENCES t1(c1,c2);
|
|
ERROR HY000: Can't create table '#sql-temporary' (errno: 150)
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ALTER TABLE t2 ADD CONSTRAINT fk_t2_ca
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FOREIGN KEY (c3,c2) REFERENCES t1(c2,c1);
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`c1` bigint(12) NOT NULL,
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`c2` bigint(12) NOT NULL,
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PRIMARY KEY (`c2`,`c1`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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SHOW CREATE TABLE t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`c1` bigint(16) NOT NULL,
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`c2` bigint(12) NOT NULL,
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`c3` bigint(12) NOT NULL,
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PRIMARY KEY (`c1`),
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KEY `fk_t2_ca` (`c3`,`c2`),
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CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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CREATE INDEX i_t2_c2_c1 ON t2(c2, c1);
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SHOW CREATE TABLE t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`c1` bigint(16) NOT NULL,
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`c2` bigint(12) NOT NULL,
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`c3` bigint(12) NOT NULL,
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PRIMARY KEY (`c1`),
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KEY `fk_t2_ca` (`c3`,`c2`),
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KEY `i_t2_c2_c1` (`c2`,`c1`),
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CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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CREATE INDEX i_t2_c3_c1_c2 ON t2(c3, c1, c2);
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SHOW CREATE TABLE t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`c1` bigint(16) NOT NULL,
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`c2` bigint(12) NOT NULL,
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`c3` bigint(12) NOT NULL,
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PRIMARY KEY (`c1`),
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KEY `fk_t2_ca` (`c3`,`c2`),
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KEY `i_t2_c2_c1` (`c2`,`c1`),
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KEY `i_t2_c3_c1_c2` (`c3`,`c1`,`c2`),
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CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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CREATE INDEX i_t2_c3_c2 ON t2(c3, c2);
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SHOW CREATE TABLE t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`c1` bigint(16) NOT NULL,
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`c2` bigint(12) NOT NULL,
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`c3` bigint(12) NOT NULL,
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PRIMARY KEY (`c1`),
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KEY `i_t2_c2_c1` (`c2`,`c1`),
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KEY `i_t2_c3_c1_c2` (`c3`,`c1`,`c2`),
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KEY `i_t2_c3_c2` (`c3`,`c2`),
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CONSTRAINT `fk_t2_ca` FOREIGN KEY (`c3`, `c2`) REFERENCES `t1` (`c2`, `c1`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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DROP TABLE t2;
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DROP TABLE t1;
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