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Commit 0f414f63 authored by Monty's avatar Monty Committed by Sergei Golubchik
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MDEV-33881 Userstat skips system tables inconsistently 

Fixed that no tables from 'mysql' schema are included in userstat.
A beneif of this is that the server is not reading statistics tables
if mysql.proc or other tables in mysql is accessed.
parent ab513b00
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Showing with 83 additions and 87 deletions
mysql-test/main/mysqldump-system,win.rdiff
View file @ 0f414f63
--- mysqldump-system.result
+++ mysqldump-system,win.result
@@ -449,9 +449,9 @@
@@ -1861,9 +1861,9 @@
Table Checksum
mysql.roles_mapping 2510045525
mysql.time_zone_transition 3719776009
......@@ -9,10 +9,10 @@
mysql.servers 2079085450
-mysql.func 3241572444
+mysql.func 310494789
mysql.innodb_table_stats 1285726777
mysql.table_stats 2836905944
mysql.innodb_table_stats 1972297402
mysql.table_stats 1911089388
# Opps....
@@ -484,9 +484,9 @@
@@ -1896,9 +1896,9 @@
Table Checksum
mysql.roles_mapping 2510045525
mysql.time_zone_transition 3719776009
......@@ -21,6 +21,6 @@
mysql.servers 2079085450
-mysql.func 3241572444
+mysql.func 310494789
mysql.innodb_table_stats 1285726777
mysql.table_stats 2836905944
mysql.innodb_table_stats 1972297402
mysql.table_stats 1911089388
DROP FUNCTION IF EXISTS metaphon;
mysql-test/main/mysqldump-system.result
View file @ 0f414f63
......@@ -19,20 +19,20 @@ GRANT role_2 TO foobar;
SET DEFAULT ROLE role_2 FOR foobar;
ALTER TABLE mysql.roles_mapping ORDER BY Host, User, Role;
set @save_innodb_stats_persistent= @@innodb_stats_persistent;
create table mysql.tz like mysql.time_zone_transition;
alter table mysql.tz engine=innodb;
insert into mysql.tz select * from mysql.time_zone_transition;
create table test.tz like mysql.time_zone_transition;
alter table test.tz engine=innodb;
insert into test.tz select * from mysql.time_zone_transition;
set global innodb_stats_persistent=1;
set time_zone="+03:00";
SET TIMESTAMP= UNIX_TIMESTAMP('2022-01-07 07:07:00');
ANALYZE TABLE mysql.tz PERSISTENT FOR ALL;
ANALYZE TABLE test.tz PERSISTENT FOR ALL;
Table Op Msg_type Msg_text
mysql.tz analyze status Engine-independent statistics collected
mysql.tz analyze status OK
test.tz analyze status Engine-independent statistics collected
test.tz analyze status OK
delete from mysql.index_stats where prefix_arity!=1;
delete from mysql.column_stats where column_name!='Time_zone_id';
update mysql.innodb_index_stats set last_update="2020-01-01" where database_name="mysql" and table_name="tz";
update mysql.innodb_table_stats set last_update="2020-01-01" where database_name="mysql" and table_name="tz";
update mysql.innodb_index_stats set last_update="2020-01-01" where database_name="test" and table_name="tz";
update mysql.innodb_table_stats set last_update="2020-01-01" where database_name="test" and table_name="tz";
update mysql.column_stats set histogram=json_replace(histogram, '$.collected_by', replace(json_value(histogram, '$.collected_by'), @@version, 'version'));
set global innodb_stats_persistent= @save_innodb_stats_persistent;
alter table mysql.time_zone_name ORDER BY Name;
......@@ -97,38 +97,38 @@ USE mysql;
LOCK TABLES `column_stats` WRITE;
/*!40000 ALTER TABLE `column_stats` DISABLE KEYS */;
REPLACE INTO `column_stats` VALUES
('mysql','tz','Time_zone_id','1','6',0.0000,4.0000,78.8000,4,'JSON_HB','{\"target_histogram_size\": 254, \"collected_at\": \"2022-01-07 07:07:00\", \"collected_by\": \"version\", \"histogram_hb\": [{\"start\": \"1\", \"size\": 0.340101523, \"ndv\": 1}, {\"start\": \"3\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"4\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"5\", \"end\": \"6\", \"size\": 0.005076142, \"ndv\": 2}]}');
('test','tz','Time_zone_id','1','6',0.0000,4.0000,78.8000,4,'JSON_HB','{\"target_histogram_size\": 254, \"collected_at\": \"2022-01-07 07:07:00\", \"collected_by\": \"version\", \"histogram_hb\": [{\"start\": \"1\", \"size\": 0.340101523, \"ndv\": 1}, {\"start\": \"3\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"4\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"5\", \"end\": \"6\", \"size\": 0.005076142, \"ndv\": 2}]}');
/*!40000 ALTER TABLE `column_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `index_stats` WRITE;
/*!40000 ALTER TABLE `index_stats` DISABLE KEYS */;
REPLACE INTO `index_stats` VALUES
('mysql','tz','PRIMARY',1,78.8000);
('test','tz','PRIMARY',1,78.8000);
/*!40000 ALTER TABLE `index_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `table_stats` WRITE;
/*!40000 ALTER TABLE `table_stats` DISABLE KEYS */;
REPLACE INTO `table_stats` VALUES
('mysql','tz',394);
('test','tz',394);
/*!40000 ALTER TABLE `table_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `innodb_index_stats` WRITE;
/*!40000 ALTER TABLE `innodb_index_stats` DISABLE KEYS */;
REPLACE INTO `innodb_index_stats` VALUES
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx01',5,1,'Time_zone_id'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx02',394,1,'Time_zone_id,Transition_time'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_leaf_pages',1,NULL,'Number of leaf pages in the index'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','size',1,NULL,'Number of pages in the index');
('test','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx01',5,1,'Time_zone_id'),
('test','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx02',394,1,'Time_zone_id,Transition_time'),
('test','tz','PRIMARY','2019-12-31 21:00:00','n_leaf_pages',1,NULL,'Number of leaf pages in the index'),
('test','tz','PRIMARY','2019-12-31 21:00:00','size',1,NULL,'Number of pages in the index');
/*!40000 ALTER TABLE `innodb_index_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `innodb_table_stats` WRITE;
/*!40000 ALTER TABLE `innodb_table_stats` DISABLE KEYS */;
REPLACE INTO `innodb_table_stats` VALUES
('mysql','tz','2019-12-31 21:00:00',394,1,0);
('test','tz','2019-12-31 21:00:00',394,1,0);
/*!40000 ALTER TABLE `innodb_table_stats` ENABLE KEYS */;
UNLOCK TABLES;
......@@ -717,38 +717,38 @@ USE mysql;
LOCK TABLES `column_stats` WRITE;
/*!40000 ALTER TABLE `column_stats` DISABLE KEYS */;
REPLACE INTO `column_stats` VALUES
('mysql','tz','Time_zone_id','1','6',0.0000,4.0000,78.8000,4,'JSON_HB','{\"target_histogram_size\": 254, \"collected_at\": \"2022-01-07 07:07:00\", \"collected_by\": \"version\", \"histogram_hb\": [{\"start\": \"1\", \"size\": 0.340101523, \"ndv\": 1}, {\"start\": \"3\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"4\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"5\", \"end\": \"6\", \"size\": 0.005076142, \"ndv\": 2}]}');
('test','tz','Time_zone_id','1','6',0.0000,4.0000,78.8000,4,'JSON_HB','{\"target_histogram_size\": 254, \"collected_at\": \"2022-01-07 07:07:00\", \"collected_by\": \"version\", \"histogram_hb\": [{\"start\": \"1\", \"size\": 0.340101523, \"ndv\": 1}, {\"start\": \"3\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"4\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"5\", \"end\": \"6\", \"size\": 0.005076142, \"ndv\": 2}]}');
/*!40000 ALTER TABLE `column_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `index_stats` WRITE;
/*!40000 ALTER TABLE `index_stats` DISABLE KEYS */;
REPLACE INTO `index_stats` VALUES
('mysql','tz','PRIMARY',1,78.8000);
('test','tz','PRIMARY',1,78.8000);
/*!40000 ALTER TABLE `index_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `table_stats` WRITE;
/*!40000 ALTER TABLE `table_stats` DISABLE KEYS */;
REPLACE INTO `table_stats` VALUES
('mysql','tz',394);
('test','tz',394);
/*!40000 ALTER TABLE `table_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `innodb_index_stats` WRITE;
/*!40000 ALTER TABLE `innodb_index_stats` DISABLE KEYS */;
REPLACE INTO `innodb_index_stats` VALUES
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx01',5,1,'Time_zone_id'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx02',394,1,'Time_zone_id,Transition_time'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_leaf_pages',1,NULL,'Number of leaf pages in the index'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','size',1,NULL,'Number of pages in the index');
('test','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx01',5,1,'Time_zone_id'),
('test','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx02',394,1,'Time_zone_id,Transition_time'),
('test','tz','PRIMARY','2019-12-31 21:00:00','n_leaf_pages',1,NULL,'Number of leaf pages in the index'),
('test','tz','PRIMARY','2019-12-31 21:00:00','size',1,NULL,'Number of pages in the index');
/*!40000 ALTER TABLE `innodb_index_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `innodb_table_stats` WRITE;
/*!40000 ALTER TABLE `innodb_table_stats` DISABLE KEYS */;
REPLACE INTO `innodb_table_stats` VALUES
('mysql','tz','2019-12-31 21:00:00',394,1,0);
('test','tz','2019-12-31 21:00:00',394,1,0);
/*!40000 ALTER TABLE `innodb_table_stats` ENABLE KEYS */;
UNLOCK TABLES;
......@@ -1314,38 +1314,38 @@ USE mysql;
LOCK TABLES `column_stats` WRITE;
/*!40000 ALTER TABLE `column_stats` DISABLE KEYS */;
INSERT IGNORE INTO `column_stats` VALUES
('mysql','tz','Time_zone_id','1','6',0.0000,4.0000,78.8000,4,'JSON_HB','{\"target_histogram_size\": 254, \"collected_at\": \"2022-01-07 07:07:00\", \"collected_by\": \"version\", \"histogram_hb\": [{\"start\": \"1\", \"size\": 0.340101523, \"ndv\": 1}, {\"start\": \"3\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"4\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"5\", \"end\": \"6\", \"size\": 0.005076142, \"ndv\": 2}]}');
('test','tz','Time_zone_id','1','6',0.0000,4.0000,78.8000,4,'JSON_HB','{\"target_histogram_size\": 254, \"collected_at\": \"2022-01-07 07:07:00\", \"collected_by\": \"version\", \"histogram_hb\": [{\"start\": \"1\", \"size\": 0.340101523, \"ndv\": 1}, {\"start\": \"3\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"4\", \"size\": 0.327411168, \"ndv\": 1}, {\"start\": \"5\", \"end\": \"6\", \"size\": 0.005076142, \"ndv\": 2}]}');
/*!40000 ALTER TABLE `column_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `index_stats` WRITE;
/*!40000 ALTER TABLE `index_stats` DISABLE KEYS */;
INSERT IGNORE INTO `index_stats` VALUES
('mysql','tz','PRIMARY',1,78.8000);
('test','tz','PRIMARY',1,78.8000);
/*!40000 ALTER TABLE `index_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `table_stats` WRITE;
/*!40000 ALTER TABLE `table_stats` DISABLE KEYS */;
INSERT IGNORE INTO `table_stats` VALUES
('mysql','tz',394);
('test','tz',394);
/*!40000 ALTER TABLE `table_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `innodb_index_stats` WRITE;
/*!40000 ALTER TABLE `innodb_index_stats` DISABLE KEYS */;
INSERT IGNORE INTO `innodb_index_stats` VALUES
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx01',5,1,'Time_zone_id'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx02',394,1,'Time_zone_id,Transition_time'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','n_leaf_pages',1,NULL,'Number of leaf pages in the index'),
('mysql','tz','PRIMARY','2019-12-31 21:00:00','size',1,NULL,'Number of pages in the index');
('test','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx01',5,1,'Time_zone_id'),
('test','tz','PRIMARY','2019-12-31 21:00:00','n_diff_pfx02',394,1,'Time_zone_id,Transition_time'),
('test','tz','PRIMARY','2019-12-31 21:00:00','n_leaf_pages',1,NULL,'Number of leaf pages in the index'),
('test','tz','PRIMARY','2019-12-31 21:00:00','size',1,NULL,'Number of pages in the index');
/*!40000 ALTER TABLE `innodb_index_stats` ENABLE KEYS */;
UNLOCK TABLES;
LOCK TABLES `innodb_table_stats` WRITE;
/*!40000 ALTER TABLE `innodb_table_stats` DISABLE KEYS */;
INSERT IGNORE INTO `innodb_table_stats` VALUES
('mysql','tz','2019-12-31 21:00:00',394,1,0);
('test','tz','2019-12-31 21:00:00',394,1,0);
/*!40000 ALTER TABLE `innodb_table_stats` ENABLE KEYS */;
UNLOCK TABLES;
......@@ -1867,8 +1867,8 @@ mysql.time_zone_transition 3719776009
mysql.plugin 1587119305
mysql.servers 2079085450
mysql.func 3241572444
mysql.innodb_table_stats 1285726777
mysql.table_stats 2836905944
mysql.innodb_table_stats 1972297402
mysql.table_stats 1911089388
# Opps....
CREATE USER mariadb_test_restore IDENTIFIED BY 'getitback';
GRANT ALL ON *.* TO mariadb_test_restore WITH GRANT OPTION;
......@@ -1902,16 +1902,16 @@ mysql.time_zone_transition 3719776009
mysql.plugin 1587119305
mysql.servers 2079085450
mysql.func 3241572444
mysql.innodb_table_stats 1285726777
mysql.table_stats 2836905944
mysql.innodb_table_stats 1972297402
mysql.table_stats 1911089388
DROP FUNCTION IF EXISTS metaphon;
DROP SERVER s1;
DELETE FROM mysql.column_stats WHERE db_name='mysql' and table_name in ('tz', 'gtid_slave_pos');
DELETE FROM mysql.index_stats WHERE db_name='mysql' and table_name in ('tz', 'gtid_slave_pos');
DELETE FROM mysql.table_stats WHERE db_name='mysql' and table_name in ('tz', 'gtid_slave_pos');
DELETE FROM mysql.innodb_index_stats WHERE database_name='mysql' and table_name in ('tz','gtid_slave_pos');
DELETE FROM mysql.innodb_table_stats WHERE database_name='mysql' and table_name in ('tz','gtid_slave_pos');
drop table mysql.tz;
DELETE FROM mysql.column_stats WHERE db_name='mysql';
DELETE FROM mysql.index_stats WHERE db_name='mysql';
DELETE FROM mysql.table_stats WHERE db_name='mysql';
DELETE FROM mysql.innodb_index_stats WHERE database_name='test';
DELETE FROM mysql.innodb_table_stats WHERE database_name='mysql';
drop table test.tz;
DROP ROLE role_2;
DROP ROLE role_1;
drop user foobar;
......
mysql-test/main/mysqldump-system.test
View file @ 0f414f63
......@@ -39,18 +39,18 @@ ALTER TABLE mysql.roles_mapping ORDER BY Host, User, Role;
# innodb and EITS tables statistics
#
set @save_innodb_stats_persistent= @@innodb_stats_persistent;
create table mysql.tz like mysql.time_zone_transition;
alter table mysql.tz engine=innodb;
insert into mysql.tz select * from mysql.time_zone_transition;
create table test.tz like mysql.time_zone_transition;
alter table test.tz engine=innodb;
insert into test.tz select * from mysql.time_zone_transition;
set global innodb_stats_persistent=1;
set time_zone="+03:00";
SET TIMESTAMP= UNIX_TIMESTAMP('2022-01-07 07:07:00');
ANALYZE TABLE mysql.tz PERSISTENT FOR ALL;
ANALYZE TABLE test.tz PERSISTENT FOR ALL;
# for predictable output in tests
delete from mysql.index_stats where prefix_arity!=1;
delete from mysql.column_stats where column_name!='Time_zone_id';
update mysql.innodb_index_stats set last_update="2020-01-01" where database_name="mysql" and table_name="tz";
update mysql.innodb_table_stats set last_update="2020-01-01" where database_name="mysql" and table_name="tz";
update mysql.innodb_index_stats set last_update="2020-01-01" where database_name="test" and table_name="tz";
update mysql.innodb_table_stats set last_update="2020-01-01" where database_name="test" and table_name="tz";
update mysql.column_stats set histogram=json_replace(histogram, '$.collected_by', replace(json_value(histogram, '$.collected_by'), @@version, 'version'));
set global innodb_stats_persistent= @save_innodb_stats_persistent;
alter table mysql.time_zone_name ORDER BY Name;
......@@ -144,12 +144,12 @@ DROP FUNCTION IF EXISTS metaphon;
DROP SERVER s1;
# EITS && innodb stats
DELETE FROM mysql.column_stats WHERE db_name='mysql' and table_name in ('tz', 'gtid_slave_pos');
DELETE FROM mysql.index_stats WHERE db_name='mysql' and table_name in ('tz', 'gtid_slave_pos');
DELETE FROM mysql.table_stats WHERE db_name='mysql' and table_name in ('tz', 'gtid_slave_pos');
DELETE FROM mysql.innodb_index_stats WHERE database_name='mysql' and table_name in ('tz','gtid_slave_pos');
DELETE FROM mysql.innodb_table_stats WHERE database_name='mysql' and table_name in ('tz','gtid_slave_pos');
drop table mysql.tz;
DELETE FROM mysql.column_stats WHERE db_name='mysql';
DELETE FROM mysql.index_stats WHERE db_name='mysql';
DELETE FROM mysql.table_stats WHERE db_name='mysql';
DELETE FROM mysql.innodb_index_stats WHERE database_name='test';
DELETE FROM mysql.innodb_table_stats WHERE database_name='mysql';
drop table test.tz;
DROP ROLE role_2;
DROP ROLE role_1;
......
mysql-test/main/ps.result
View file @ 0f414f63
......@@ -2145,11 +2145,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
call proc_1();
show open tables from mysql;
......@@ -2159,11 +2156,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
call proc_1();
show open tables from mysql;
......@@ -2173,11 +2167,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
call proc_1();
show open tables from mysql;
......@@ -2187,11 +2178,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
flush tables;
create function func_1() returns int begin flush tables; return 1; end|
......@@ -2206,11 +2194,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
prepare abc from "flush tables";
execute abc;
......@@ -2221,11 +2206,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
execute abc;
show open tables from mysql;
......@@ -2235,11 +2217,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
execute abc;
show open tables from mysql;
......@@ -2249,11 +2228,8 @@ select Host, User from mysql.user limit 0;
Host User
show open tables from mysql;
Database Table In_use Name_locked
mysql column_stats 0 0
mysql general_log 0 0
mysql global_priv 0 0
mysql index_stats 0 0
mysql table_stats 0 0
mysql user 0 0
flush tables;
deallocate prepare abc;
......
mysql-test/main/userstat.result
View file @ 0f414f63
......@@ -240,12 +240,18 @@ set @@global.general_log=@save_general_log;
#
create function f() returns int return (select 1 from performance_schema.threads);
set global userstat= 1;
create table t1 (a int primary key);
insert into t1 values (1),(2);
select * from t1 where a=1;
a
1
select f() from information_schema.table_statistics;
ERROR 21000: Subquery returns more than 1 row
select f() from information_schema.index_statistics;
ERROR 21000: Subquery returns more than 1 row
set global userstat= 0;
drop function f;
drop table t1;
#
# End of 10.2 tests
#
......
mysql-test/main/userstat.test
View file @ 0f414f63
......@@ -122,12 +122,16 @@ set @@global.general_log=@save_general_log;
--echo #
create function f() returns int return (select 1 from performance_schema.threads);
set global userstat= 1;
create table t1 (a int primary key);
insert into t1 values (1),(2);
select * from t1 where a=1;
--error ER_SUBQUERY_NO_1_ROW
select f() from information_schema.table_statistics;
--error ER_SUBQUERY_NO_1_ROW
select f() from information_schema.index_statistics;
set global userstat= 0;
drop function f;
drop table t1;
--enable_ps2_protocol
--echo #
......@@ -145,7 +149,9 @@ set global userstat= 1;
create or replace table t1 (a int, key(a)) engine=MyISAM;
insert into t1 values (1),(2),(3),(4);
flush index_statistics;
--disable_ps2_protocol
select a from t1 where a in ( select a from t1 );
--enable_ps2_protocol
show index_statistics;
drop table t1;
set global userstat=@save_userstat;
......
sql/sql_base.cc
View file @ 0f414f63
......@@ -2312,7 +2312,8 @@ bool open_table(THD *thd, TABLE_LIST *table_list, Open_table_context *ot_ctx)
*/
enum enum_mdl_type mdl_type= MDL_BACKUP_DML;
if (table->s->table_category != TABLE_CATEGORY_USER)
if (table->s->table_category != TABLE_CATEGORY_USER &&
table->s->table_category != TABLE_CATEGORY_MYSQL)
mdl_type= MDL_BACKUP_SYS_DML;
else if (table->s->online_backup)
mdl_type= MDL_BACKUP_TRANS_DML;
......
sql/table.cc
View file @ 0f414f63
......@@ -324,6 +324,8 @@ TABLE_CATEGORY get_table_category(const Lex_ident_db &db,
name.streq(SLOW_LOG_NAME) ||
name.streq(TRANSACTION_REG_NAME))
return TABLE_CATEGORY_LOG;
return TABLE_CATEGORY_MYSQL;
}
return TABLE_CATEGORY_USER;
......
sql/table.h
View file @ 0f414f63
......@@ -490,6 +490,11 @@ enum enum_table_category
*/
TABLE_CATEGORY_LOG=5,
/**
Other tables in the mysql schema, like global_priv and db
*/
TABLE_CATEGORY_MYSQL= 6,
/*
Types below are read only tables, not affected by FLUSH TABLES or
MDL locks.
......@@ -514,7 +519,7 @@ enum enum_table_category
to I_S tables in the table cache, which should use
this table type.
*/
TABLE_CATEGORY_INFORMATION=6,
TABLE_CATEGORY_INFORMATION=7,
/**
Performance schema tables.
......@@ -536,7 +541,7 @@ enum enum_table_category
The server implementation perform writes.
Performance tables are cached in the table cache.
*/
TABLE_CATEGORY_PERFORMANCE=7
TABLE_CATEGORY_PERFORMANCE=8
};
typedef enum enum_table_category TABLE_CATEGORY;
......
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