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9608773f75
This essentially reverts commit 4e89ec6692
and only disables InnoDB persistent statistics for tests where it is
desirable. By design, InnoDB persistent statistics will not be updated
except by ANALYZE TABLE or by STATS_AUTO_RECALC.
The internal transactions that update persistent InnoDB statistics
in background tasks (with innodb_stats_auto_recalc=ON) may cause
nondeterministic query plans or interfere with some tests that deal
with other InnoDB internals, such as the purge of transaction history.
190 lines
3.5 KiB
Text
190 lines
3.5 KiB
Text
SET @save_stats_persistent=@@GLOBAL.innodb_stats_persistent;
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SET GLOBAL innodb_stats_persistent=0;
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SET SESSION DEFAULT_STORAGE_ENGINE = InnoDB;
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drop table if exists t1, t2, t3,t4;
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create table t1 (
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pk1 int not NULL,
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key1 int(11),
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key2 int(11),
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PRIMARY KEY (pk1),
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KEY key1 (key1),
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KEY key2 (key2)
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);
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insert into t1 values (-5, 1, 1),
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(-100, 1, 1),
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(3, 1, 1),
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(0, 1, 1),
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(10, 1, 1);
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explain select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
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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_merge key1,key2 key1,key2 5,5 NULL 5 Using sort_union(key1,key2); Using where
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select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
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pk1 key1 key2
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-100 1 1
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-5 1 1
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0 1 1
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3 1 1
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10 1 1
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drop table t1;
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create table t1 (
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pk1 int unsigned not NULL,
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key1 int(11),
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key2 int(11),
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PRIMARY KEY (pk1),
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KEY key1 (key1),
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KEY key2 (key2)
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);
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insert into t1 values (0, 1, 1),
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(0xFFFFFFFF, 1, 1),
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(0xFFFFFFFE, 1, 1),
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(1, 1, 1),
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(2, 1, 1);
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select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
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pk1 key1 key2
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0 1 1
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1 1 1
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2 1 1
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4294967294 1 1
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4294967295 1 1
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drop table t1;
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create table t1 (
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pk1 char(4) not NULL,
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key1 int(11),
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key2 int(11),
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PRIMARY KEY (pk1),
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KEY key1 (key1),
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KEY key2 (key2)
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) collate latin2_general_ci;
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insert into t1 values ('a1', 1, 1),
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('b2', 1, 1),
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('A3', 1, 1),
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('B4', 1, 1);
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select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
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pk1 key1 key2
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a1 1 1
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A3 1 1
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b2 1 1
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B4 1 1
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drop table t1;
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create table t1 (
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pk1 int not NULL,
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pk2 char(4) not NULL collate latin1_german1_ci,
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pk3 char(4) not NULL collate latin1_bin,
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key1 int(11),
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key2 int(11),
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PRIMARY KEY (pk1,pk2,pk3),
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KEY key1 (key1),
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KEY key2 (key2)
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);
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insert into t1 values
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(1, 'u', 'u', 1, 1),
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(1, 'u', char(0xEC), 1, 1),
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(1, 'u', 'x', 1, 1);
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insert ignore into t1 select pk1, char(0xEC), pk3, key1, key2 from t1;
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insert ignore into t1 select pk1, 'x', pk3, key1, key2 from t1 where pk2='u';
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insert ignore into t1 select 2, pk2, pk3, key1, key2 from t1;
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select * from t1;
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pk1 pk2 pk3 key1 key2
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1 <09> u 1 1
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1 <09> x 1 1
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1 <09> <09> 1 1
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1 u u 1 1
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1 u x 1 1
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1 u <09> 1 1
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1 x u 1 1
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1 x x 1 1
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1 x <09> 1 1
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2 <09> u 1 1
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2 <09> x 1 1
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2 <09> <09> 1 1
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2 u u 1 1
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2 u x 1 1
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2 u <09> 1 1
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2 x u 1 1
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2 x x 1 1
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2 x <09> 1 1
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select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
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pk1 pk2 pk3 key1 key2
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1 <09> u 1 1
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1 <09> x 1 1
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1 <09> <09> 1 1
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1 u u 1 1
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1 u x 1 1
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1 u <09> 1 1
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1 x u 1 1
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1 x x 1 1
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1 x <09> 1 1
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2 <09> u 1 1
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2 <09> x 1 1
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2 <09> <09> 1 1
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2 u u 1 1
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2 u x 1 1
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2 u <09> 1 1
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2 x u 1 1
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2 x x 1 1
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2 x <09> 1 1
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alter table t1 drop primary key;
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select * from t1;
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pk1 pk2 pk3 key1 key2
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1 <09> u 1 1
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1 <09> x 1 1
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1 <09> <09> 1 1
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1 u u 1 1
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1 u x 1 1
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1 u <09> 1 1
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1 x u 1 1
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1 x x 1 1
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1 x <09> 1 1
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2 <09> u 1 1
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2 <09> x 1 1
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2 <09> <09> 1 1
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2 u u 1 1
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2 u x 1 1
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2 u <09> 1 1
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2 x u 1 1
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2 x x 1 1
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2 x <09> 1 1
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select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
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pk1 pk2 pk3 key1 key2
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1 <09> u 1 1
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1 <09> x 1 1
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1 <09> <09> 1 1
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1 u u 1 1
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1 u x 1 1
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1 u <09> 1 1
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1 x u 1 1
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1 x x 1 1
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1 x <09> 1 1
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2 <09> u 1 1
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2 <09> x 1 1
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2 <09> <09> 1 1
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2 u u 1 1
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2 u x 1 1
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2 u <09> 1 1
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2 x u 1 1
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2 x x 1 1
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2 x <09> 1 1
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drop table t1;
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create table t1 (
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pk1 varchar(8) NOT NULL default '',
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pk2 varchar(4) NOT NULL default '',
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key1 int(11),
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key2 int(11),
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primary key(pk1, pk2),
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KEY key1 (key1),
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KEY key2 (key2)
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);
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insert into t1 values ('','empt',2,2),
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('a','a--a',2,2),
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('bb','b--b',2,2),
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('ccc','c--c',2,2),
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('dddd','d--d',2,2);
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select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
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pk1 pk2 key1 key2
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empt 2 2
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a a--a 2 2
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bb b--b 2 2
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ccc c--c 2 2
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dddd d--d 2 2
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drop table t1;
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SET GLOBAL innodb_stats_persistent=@save_stats_persistent;
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