2010-12-02 08:39:39 +01:00
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set @optimizer_switch_save= @@optimizer_switch;
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set optimizer_switch='index_merge_sort_intersection=off';
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2006-08-16 14:58:49 +02:00
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#---------------- Index merge test 2 -------------------------------------------
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SET SESSION STORAGE_ENGINE = InnoDB;
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2005-01-16 22:18:19 +01:00
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drop table if exists t1,t2;
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2003-11-20 21:27:11 +01:00
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create table t1
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(
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2006-08-16 14:58:49 +02:00
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key1 int not null,
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key2 int not null,
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2003-11-20 21:27:11 +01:00
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INDEX i1(key1),
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2004-05-14 16:00:57 +02:00
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INDEX i2(key2)
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2006-08-16 14:58:49 +02:00
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);
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2003-11-20 21:27:11 +01:00
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explain select * from t1 where key1 < 5 or key2 > 197;
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id select_type table type possible_keys key key_len ref rows Extra
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2004-05-29 00:04:01 +02:00
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1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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2003-11-20 21:27:11 +01:00
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select * from t1 where key1 < 5 or key2 > 197;
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key1 key2
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0 200
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1 199
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2 198
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3 197
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4 196
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explain select * from t1 where key1 < 3 or key2 > 195;
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id select_type table type possible_keys key key_len ref rows Extra
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2004-05-29 00:04:01 +02:00
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1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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2003-11-20 21:27:11 +01:00
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select * from t1 where key1 < 3 or key2 > 195;
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key1 key2
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0 200
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1 199
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2 198
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3 197
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2003-11-24 18:54:57 +01:00
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4 196
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2006-08-16 14:58:49 +02:00
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alter table t1 add str1 char (255) not null,
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2003-11-20 21:27:11 +01:00
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add zeroval int not null default 0,
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add str2 char (255) not null,
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add str3 char (255) not null;
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update t1 set str1='aaa', str2='bbb', str3=concat(key2, '-', key1 div 2, '_' ,if(key1 mod 2 = 0, 'a', 'A'));
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alter table t1 add primary key (str1, zeroval, str2, str3);
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explain select * from t1 where key1 < 5 or key2 > 197;
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id select_type table type possible_keys key key_len ref rows Extra
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2004-05-29 00:04:01 +02:00
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1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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2003-11-20 21:27:11 +01:00
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select * from t1 where key1 < 5 or key2 > 197;
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key1 key2 str1 zeroval str2 str3
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4 196 aaa 0 bbb 196-2_a
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2003-11-24 18:54:57 +01:00
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3 197 aaa 0 bbb 197-1_A
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2 198 aaa 0 bbb 198-1_a
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1 199 aaa 0 bbb 199-0_A
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0 200 aaa 0 bbb 200-0_a
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2003-11-20 21:27:11 +01:00
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explain select * from t1 where key1 < 3 or key2 > 195;
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id select_type table type possible_keys key key_len ref rows Extra
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2004-05-29 00:04:01 +02:00
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1 SIMPLE t1 index_merge i1,i2 i1,i2 4,4 NULL 8 Using sort_union(i1,i2); Using where
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2003-11-20 21:27:11 +01:00
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select * from t1 where key1 < 3 or key2 > 195;
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key1 key2 str1 zeroval str2 str3
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4 196 aaa 0 bbb 196-2_a
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3 197 aaa 0 bbb 197-1_A
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2003-11-24 18:54:57 +01:00
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2 198 aaa 0 bbb 198-1_a
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1 199 aaa 0 bbb 199-0_A
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0 200 aaa 0 bbb 200-0_a
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2003-11-20 21:27:11 +01:00
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drop table t1;
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2004-12-23 00:26:22 +01:00
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create table t1 (
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pk integer not null auto_increment primary key,
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key1 integer,
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key2 integer not null,
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filler char (200),
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index (key1),
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index (key2)
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2006-08-16 14:58:49 +02:00
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);
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2004-12-23 00:26:22 +01:00
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show warnings;
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Level Code Message
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explain select pk from t1 where key1 = 1 and key2 = 1;
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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 5,4 NULL 1 Using intersect(key1,key2); Using where; Using index
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select pk from t1 where key2 = 1 and key1 = 1;
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pk
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26
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2005-02-08 23:50:45 +01:00
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27
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2004-12-23 00:26:22 +01:00
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select pk from t1 ignore index(key1,key2) where key2 = 1 and key1 = 1;
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pk
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26
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2005-02-08 23:50:45 +01:00
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27
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2004-12-23 00:26:22 +01:00
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drop table t1;
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create table t1 (
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pk int primary key auto_increment,
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key1a int,
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key2a int,
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key1b int,
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key2b int,
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dummy1 int,
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dummy2 int,
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dummy3 int,
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dummy4 int,
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key3a int,
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key3b int,
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filler1 char (200),
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index i1(key1a, key1b),
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index i2(key2a, key2b),
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index i3(key3a, key3b)
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2006-08-16 14:58:49 +02:00
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);
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2004-12-23 00:26:22 +01:00
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create table t2 (a int);
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insert into t2 values (0),(1),(2),(3),(4),(NULL);
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2006-08-16 14:58:49 +02:00
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insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
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2004-12-23 00:26:22 +01:00
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select A.a, B.a, C.a, D.a, C.a, D.a from t2 A,t2 B,t2 C, t2 D;
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2006-08-16 14:58:49 +02:00
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insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
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2004-12-23 00:26:22 +01:00
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select key1a, key1b, key2a, key2b, key3a, key3b from t1;
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2006-08-16 14:58:49 +02:00
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insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
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2004-12-23 00:26:22 +01:00
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select key1a, key1b, key2a, key2b, key3a, key3b from t1;
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analyze table t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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select count(*) from t1;
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count(*)
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5184
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2006-08-16 14:58:49 +02:00
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explain select count(*) from t1 where
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2004-12-23 00:26:22 +01:00
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key1a = 2 and key1b is null and key2a = 2 and key2b is null;
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id select_type table type possible_keys key key_len ref rows Extra
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2009-11-14 02:15:03 +01:00
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1 SIMPLE t1 index_merge i1,i2 i1,i2 10,10 NULL REF Using intersect(i1,i2); Using where; Using index
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2006-08-16 14:58:49 +02:00
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select count(*) from t1 where
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2004-12-23 00:26:22 +01:00
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key1a = 2 and key1b is null and key2a = 2 and key2b is null;
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count(*)
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4
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2006-08-16 14:58:49 +02:00
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explain select count(*) from t1 where
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2004-12-23 00:26:22 +01:00
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key1a = 2 and key1b is null and key3a = 2 and key3b is null;
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id select_type table type possible_keys key key_len ref rows Extra
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2009-11-14 02:15:03 +01:00
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1 SIMPLE t1 index_merge i1,i3 i1,i3 10,10 NULL REF Using intersect(i1,i3); Using where; Using index
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2006-08-16 14:58:49 +02:00
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select count(*) from t1 where
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2004-12-23 00:26:22 +01:00
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key1a = 2 and key1b is null and key3a = 2 and key3b is null;
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count(*)
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4
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drop table t1,t2;
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2005-06-20 10:56:37 +02:00
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create table t1 (
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id1 int,
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id2 date ,
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index idx2 (id1,id2),
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2006-08-16 14:58:49 +02:00
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index idx1 (id2)
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);
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2005-06-20 10:56:37 +02:00
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insert into t1 values(1,'20040101'), (2,'20040102');
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select * from t1 where id1 = 1 and id2= '20040101';
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id1 id2
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1 2004-01-01
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drop table t1;
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2005-08-30 01:14:39 +02:00
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drop view if exists v1;
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CREATE TABLE t1 (
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`oid` int(11) unsigned NOT NULL auto_increment,
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`fk_bbk_niederlassung` int(11) unsigned NOT NULL,
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`fk_wochentag` int(11) unsigned NOT NULL,
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`uhrzeit_von` time NOT NULL COMMENT 'HH:MM',
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`uhrzeit_bis` time NOT NULL COMMENT 'HH:MM',
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`geloescht` tinyint(4) NOT NULL,
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`version` int(5) NOT NULL,
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PRIMARY KEY (`oid`),
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KEY `fk_bbk_niederlassung` (`fk_bbk_niederlassung`),
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KEY `fk_wochentag` (`fk_wochentag`),
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KEY `ix_version` (`version`)
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2006-08-16 14:58:49 +02:00
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) DEFAULT CHARSET=latin1;
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insert into t1 values
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2005-08-30 01:14:39 +02:00
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(1, 38, 1, '08:00:00', '13:00:00', 0, 1),
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(2, 38, 2, '08:00:00', '13:00:00', 0, 1),
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(3, 38, 3, '08:00:00', '13:00:00', 0, 1),
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(4, 38, 4, '08:00:00', '13:00:00', 0, 1),
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(5, 38, 5, '08:00:00', '13:00:00', 0, 1),
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(6, 38, 5, '08:00:00', '13:00:00', 1, 2),
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(7, 38, 3, '08:00:00', '13:00:00', 1, 2),
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(8, 38, 1, '08:00:00', '13:00:00', 1, 2),
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(9, 38, 2, '08:00:00', '13:00:00', 1, 2),
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(10, 38, 4, '08:00:00', '13:00:00', 1, 2),
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(11, 38, 1, '08:00:00', '13:00:00', 0, 3),
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(12, 38, 2, '08:00:00', '13:00:00', 0, 3),
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(13, 38, 3, '08:00:00', '13:00:00', 0, 3),
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(14, 38, 4, '08:00:00', '13:00:00', 0, 3),
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(15, 38, 5, '08:00:00', '13:00:00', 0, 3),
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(16, 38, 4, '08:00:00', '13:00:00', 0, 4),
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(17, 38, 5, '08:00:00', '13:00:00', 0, 4),
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(18, 38, 1, '08:00:00', '13:00:00', 0, 4),
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(19, 38, 2, '08:00:00', '13:00:00', 0, 4),
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(20, 38, 3, '08:00:00', '13:00:00', 0, 4),
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(21, 7, 1, '08:00:00', '13:00:00', 0, 1),
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(22, 7, 2, '08:00:00', '13:00:00', 0, 1),
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(23, 7, 3, '08:00:00', '13:00:00', 0, 1),
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(24, 7, 4, '08:00:00', '13:00:00', 0, 1),
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(25, 7, 5, '08:00:00', '13:00:00', 0, 1);
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2006-08-16 14:58:49 +02:00
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create view v1 as
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select
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zeit1.oid AS oid,
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2005-08-30 01:14:39 +02:00
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zeit1.fk_bbk_niederlassung AS fk_bbk_niederlassung,
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zeit1.fk_wochentag AS fk_wochentag,
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2006-08-16 14:58:49 +02:00
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zeit1.uhrzeit_von AS uhrzeit_von,
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zeit1.uhrzeit_bis AS uhrzeit_bis,
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2005-08-30 01:14:39 +02:00
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zeit1.geloescht AS geloescht,
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zeit1.version AS version
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2006-08-16 14:58:49 +02:00
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from
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2005-08-30 01:14:39 +02:00
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t1 zeit1
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2006-08-16 14:58:49 +02:00
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where
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(zeit1.version =
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2005-08-30 01:14:39 +02:00
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(select max(zeit2.version) AS `max(version)`
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2006-08-16 14:58:49 +02:00
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from t1 zeit2
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where
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((zeit1.fk_bbk_niederlassung = zeit2.fk_bbk_niederlassung) and
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(zeit1.fk_wochentag = zeit2.fk_wochentag) and
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(zeit1.uhrzeit_von = zeit2.uhrzeit_von) and
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2005-08-30 01:14:39 +02:00
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(zeit1.uhrzeit_bis = zeit2.uhrzeit_bis)
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)
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)
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)
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and (zeit1.geloescht = 0);
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select * from v1 where oid = 21;
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oid fk_bbk_niederlassung fk_wochentag uhrzeit_von uhrzeit_bis geloescht version
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21 7 1 08:00:00 13:00:00 0 1
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drop view v1;
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drop table t1;
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2005-10-01 09:56:01 +02:00
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CREATE TABLE t1(
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t_cpac varchar(2) NOT NULL,
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t_vers varchar(4) NOT NULL,
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t_rele varchar(2) NOT NULL,
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t_cust varchar(4) NOT NULL,
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filler1 char(250) default NULL,
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filler2 char(250) default NULL,
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PRIMARY KEY (t_cpac,t_vers,t_rele,t_cust),
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UNIQUE KEY IX_4 (t_cust,t_cpac,t_vers,t_rele),
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KEY IX_5 (t_vers,t_rele,t_cust)
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2006-08-16 14:58:49 +02:00
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);
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2005-10-01 09:56:01 +02:00
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insert into t1 values
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('tm','2.5 ','a ',' ','',''), ('tm','2.5U','a ','stnd','',''),
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('da','3.3 ','b ',' ','',''), ('da','3.3U','b ','stnd','',''),
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('tl','7.6 ','a ',' ','',''), ('tt','7.6 ','a ',' ','',''),
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('bc','B61 ','a ',' ','',''), ('bp','B61 ','a ',' ','',''),
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('ca','B61 ','a ',' ','',''), ('ci','B61 ','a ',' ','',''),
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('cp','B61 ','a ',' ','',''), ('dm','B61 ','a ',' ','',''),
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('ec','B61 ','a ',' ','',''), ('ed','B61 ','a ',' ','',''),
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('fm','B61 ','a ',' ','',''), ('nt','B61 ','a ',' ','',''),
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('qm','B61 ','a ',' ','',''), ('tc','B61 ','a ',' ','',''),
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('td','B61 ','a ',' ','',''), ('tf','B61 ','a ',' ','',''),
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('tg','B61 ','a ',' ','',''), ('ti','B61 ','a ',' ','',''),
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('tp','B61 ','a ',' ','',''), ('ts','B61 ','a ',' ','',''),
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('wh','B61 ','a ',' ','',''), ('bc','B61U','a ','stnd','',''),
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('bp','B61U','a ','stnd','',''), ('ca','B61U','a ','stnd','',''),
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|
|
|
('ci','B61U','a ','stnd','',''), ('cp','B61U','a ','stnd','',''),
|
|
|
|
|
('dm','B61U','a ','stnd','',''), ('ec','B61U','a ','stnd','',''),
|
|
|
|
|
('fm','B61U','a ','stnd','',''), ('nt','B61U','a ','stnd','',''),
|
|
|
|
|
('qm','B61U','a ','stnd','',''), ('tc','B61U','a ','stnd','',''),
|
|
|
|
|
('td','B61U','a ','stnd','',''), ('tf','B61U','a ','stnd','',''),
|
|
|
|
|
('tg','B61U','a ','stnd','',''), ('ti','B61U','a ','stnd','',''),
|
|
|
|
|
('tp','B61U','a ','stnd','',''), ('ts','B61U','a ','stnd','',''),
|
|
|
|
|
('wh','B61U','a ','stnd','','');
|
|
|
|
|
show create table t1;
|
|
|
|
|
Table Create Table
|
|
|
|
|
t1 CREATE TABLE `t1` (
|
|
|
|
|
`t_cpac` varchar(2) NOT NULL,
|
|
|
|
|
`t_vers` varchar(4) NOT NULL,
|
|
|
|
|
`t_rele` varchar(2) NOT NULL,
|
|
|
|
|
`t_cust` varchar(4) NOT NULL,
|
2006-02-22 10:09:59 +01:00
|
|
|
`filler1` char(250) DEFAULT NULL,
|
|
|
|
|
`filler2` char(250) DEFAULT NULL,
|
2006-02-02 20:39:28 +01:00
|
|
|
PRIMARY KEY (`t_cpac`,`t_vers`,`t_rele`,`t_cust`),
|
2005-10-01 09:56:01 +02:00
|
|
|
UNIQUE KEY `IX_4` (`t_cust`,`t_cpac`,`t_vers`,`t_rele`),
|
|
|
|
|
KEY `IX_5` (`t_vers`,`t_rele`,`t_cust`)
|
|
|
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
|
|
|
select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6';
|
|
|
|
|
t_vers t_rele t_cust filler1
|
|
|
|
|
7.6 a
|
|
|
|
|
7.6 a
|
|
|
|
|
select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6'
|
|
|
|
|
and t_rele='a' and t_cust = ' ';
|
|
|
|
|
t_vers t_rele t_cust filler1
|
|
|
|
|
7.6 a
|
|
|
|
|
7.6 a
|
|
|
|
|
drop table t1;
|
2006-04-13 14:05:32 +02:00
|
|
|
create table t1 (
|
|
|
|
|
pk int(11) not null auto_increment,
|
|
|
|
|
a int(11) not null default '0',
|
|
|
|
|
b int(11) not null default '0',
|
|
|
|
|
c int(11) not null default '0',
|
|
|
|
|
filler1 datetime, filler2 varchar(15),
|
|
|
|
|
filler3 longtext,
|
|
|
|
|
kp1 varchar(4), kp2 varchar(7),
|
|
|
|
|
kp3 varchar(2), kp4 varchar(4),
|
|
|
|
|
kp5 varchar(7),
|
|
|
|
|
filler4 char(1),
|
|
|
|
|
primary key (pk),
|
|
|
|
|
key idx1(a,b,c),
|
|
|
|
|
key idx2(c),
|
|
|
|
|
key idx3(kp1,kp2,kp3,kp4,kp5)
|
2006-08-16 14:58:49 +02:00
|
|
|
) default charset=latin1;
|
2006-04-13 14:05:32 +02:00
|
|
|
set @fill=NULL;
|
2006-08-16 14:58:49 +02:00
|
|
|
SELECT COUNT(*) FROM t1 WHERE b = 0 AND a = 0 AND c = 13286427 AND
|
2006-04-13 14:05:32 +02:00
|
|
|
kp1='279' AND kp2='ELM0678' AND kp3='6' AND kp4='10' AND kp5 = 'R ';
|
|
|
|
|
COUNT(*)
|
|
|
|
|
1
|
|
|
|
|
drop table t1;
|
2006-09-18 16:55:56 +02:00
|
|
|
create table t1
|
|
|
|
|
(
|
|
|
|
|
key1 int not null,
|
|
|
|
|
key2 int not null default 0,
|
|
|
|
|
key3 int not null default 0
|
|
|
|
|
);
|
|
|
|
|
insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
|
|
|
|
|
set @d=8;
|
|
|
|
|
insert into t1 (key1) select key1+@d from t1;
|
|
|
|
|
set @d=@d*2;
|
|
|
|
|
insert into t1 (key1) select key1+@d from t1;
|
|
|
|
|
set @d=@d*2;
|
|
|
|
|
insert into t1 (key1) select key1+@d from t1;
|
|
|
|
|
set @d=@d*2;
|
|
|
|
|
insert into t1 (key1) select key1+@d from t1;
|
|
|
|
|
set @d=@d*2;
|
|
|
|
|
insert into t1 (key1) select key1+@d from t1;
|
|
|
|
|
set @d=@d*2;
|
|
|
|
|
insert into t1 (key1) select key1+@d from t1;
|
|
|
|
|
set @d=@d*2;
|
|
|
|
|
insert into t1 (key1) select key1+@d from t1;
|
|
|
|
|
set @d=@d*2;
|
|
|
|
|
alter table t1 add index i2(key2);
|
|
|
|
|
alter table t1 add index i3(key3);
|
|
|
|
|
update t1 set key2=key1,key3=key1;
|
2016-09-05 11:28:35 +02:00
|
|
|
analyze table t1;
|
|
|
|
|
Table Op Msg_type Msg_text
|
|
|
|
|
test.t1 analyze status OK
|
2006-09-18 16:55:56 +02:00
|
|
|
explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2012-09-10 16:26:54 +02:00
|
|
|
1 SIMPLE t1 index_merge i2,i3 i3,i2 4,4 NULL REF Using sort_union(i3,i2); Using where
|
2006-09-18 16:55:56 +02:00
|
|
|
select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
|
|
|
|
|
key1 key2 key3
|
|
|
|
|
31 31 31
|
|
|
|
|
32 32 32
|
|
|
|
|
33 33 33
|
|
|
|
|
34 34 34
|
|
|
|
|
35 35 35
|
|
|
|
|
36 36 36
|
|
|
|
|
37 37 37
|
|
|
|
|
38 38 38
|
|
|
|
|
39 39 39
|
|
|
|
|
drop table t1;
|
2010-10-07 10:13:11 +02:00
|
|
|
#
|
|
|
|
|
# Bug#56423: Different count with SELECT and CREATE SELECT queries
|
|
|
|
|
#
|
|
|
|
|
CREATE TABLE t1 (
|
|
|
|
|
a INT,
|
|
|
|
|
b INT,
|
|
|
|
|
c INT,
|
|
|
|
|
d INT,
|
|
|
|
|
PRIMARY KEY (a),
|
|
|
|
|
KEY (c),
|
|
|
|
|
KEY bd (b,d)
|
|
|
|
|
);
|
|
|
|
|
INSERT INTO t1 VALUES
|
|
|
|
|
(1, 0, 1, 0),
|
|
|
|
|
(2, 1, 1, 1),
|
|
|
|
|
(3, 1, 1, 1),
|
|
|
|
|
(4, 0, 1, 1);
|
|
|
|
|
EXPLAIN
|
|
|
|
|
SELECT a
|
|
|
|
|
FROM t1
|
|
|
|
|
WHERE c = 1 AND b = 1 AND d = 1;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2011-11-23 09:25:27 +01:00
|
|
|
1 SIMPLE t1 ref c,bd bd 10 const,const 2 Using where
|
2010-10-07 10:13:11 +02:00
|
|
|
CREATE TABLE t2 ( a INT )
|
|
|
|
|
SELECT a
|
|
|
|
|
FROM t1
|
|
|
|
|
WHERE c = 1 AND b = 1 AND d = 1;
|
|
|
|
|
SELECT * FROM t2;
|
|
|
|
|
a
|
|
|
|
|
2
|
|
|
|
|
3
|
|
|
|
|
DROP TABLE t1, t2;
|
|
|
|
|
CREATE TABLE t1( a INT, b INT, KEY(a), KEY(b) );
|
|
|
|
|
INSERT INTO t1 VALUES (1, 2), (1, 2), (1, 2), (1, 2);
|
|
|
|
|
SELECT * FROM t1 FORCE INDEX(a, b) WHERE a = 1 AND b = 2;
|
|
|
|
|
a b
|
|
|
|
|
1 2
|
|
|
|
|
1 2
|
|
|
|
|
1 2
|
|
|
|
|
1 2
|
|
|
|
|
DROP TABLE t1;
|
|
|
|
|
# Code coverage of fix.
|
|
|
|
|
CREATE TABLE t1 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b INT);
|
|
|
|
|
INSERT INTO t1 (b) VALUES (1);
|
|
|
|
|
UPDATE t1 SET b = 2 WHERE a = 1;
|
|
|
|
|
SELECT * FROM t1;
|
|
|
|
|
a b
|
|
|
|
|
1 2
|
|
|
|
|
CREATE TABLE t2 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b VARCHAR(1) );
|
|
|
|
|
INSERT INTO t2 (b) VALUES ('a');
|
|
|
|
|
UPDATE t2 SET b = 'b' WHERE a = 1;
|
|
|
|
|
SELECT * FROM t2;
|
|
|
|
|
a b
|
|
|
|
|
1 b
|
|
|
|
|
DROP TABLE t1, t2;
|
2006-08-16 14:58:49 +02:00
|
|
|
#---------------- 2-sweeps read Index merge test 2 -------------------------------
|
|
|
|
|
SET SESSION STORAGE_ENGINE = InnoDB;
|
|
|
|
|
drop table if exists t1;
|
|
|
|
|
create table t1 (
|
|
|
|
|
pk int primary key,
|
|
|
|
|
key1 int,
|
|
|
|
|
key2 int,
|
|
|
|
|
filler char(200),
|
|
|
|
|
filler2 char(200),
|
|
|
|
|
index(key1),
|
|
|
|
|
index(key2)
|
|
|
|
|
);
|
|
|
|
|
select * from t1 where (key1 >= 2 and key1 <= 10) or (pk >= 4 and pk <=8 );
|
|
|
|
|
pk key1 key2 filler filler2
|
|
|
|
|
2 2 2 filler-data filler-data-2
|
|
|
|
|
3 3 3 filler-data filler-data-2
|
|
|
|
|
9 9 9 filler-data filler-data-2
|
|
|
|
|
10 10 10 filler-data filler-data-2
|
|
|
|
|
4 4 4 filler-data filler-data-2
|
|
|
|
|
5 5 5 filler-data filler-data-2
|
|
|
|
|
6 6 6 filler-data filler-data-2
|
|
|
|
|
7 7 7 filler-data filler-data-2
|
|
|
|
|
8 8 8 filler-data filler-data-2
|
|
|
|
|
set @maxv=1000;
|
|
|
|
|
select * from t1 where
|
|
|
|
|
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
|
|
|
|
|
or key1=18 or key1=60;
|
|
|
|
|
pk key1 key2 filler filler2
|
|
|
|
|
18 18 18 filler-data filler-data-2
|
|
|
|
|
60 60 60 filler-data filler-data-2
|
|
|
|
|
1 1 1 filler-data filler-data-2
|
|
|
|
|
2 2 2 filler-data filler-data-2
|
|
|
|
|
3 3 3 filler-data filler-data-2
|
|
|
|
|
4 4 4 filler-data filler-data-2
|
|
|
|
|
11 11 11 filler-data filler-data-2
|
|
|
|
|
12 12 12 filler-data filler-data-2
|
|
|
|
|
13 13 13 filler-data filler-data-2
|
|
|
|
|
14 14 14 filler-data filler-data-2
|
|
|
|
|
50 50 50 filler-data filler-data-2
|
|
|
|
|
51 51 51 filler-data filler-data-2
|
|
|
|
|
52 52 52 filler-data filler-data-2
|
|
|
|
|
53 53 53 filler-data filler-data-2
|
|
|
|
|
54 54 54 filler-data filler-data-2
|
|
|
|
|
991 991 991 filler-data filler-data-2
|
|
|
|
|
992 992 992 filler-data filler-data-2
|
|
|
|
|
993 993 993 filler-data filler-data-2
|
|
|
|
|
994 994 994 filler-data filler-data-2
|
|
|
|
|
995 995 995 filler-data filler-data-2
|
|
|
|
|
996 996 996 filler-data filler-data-2
|
|
|
|
|
997 997 997 filler-data filler-data-2
|
|
|
|
|
998 998 998 filler-data filler-data-2
|
|
|
|
|
999 999 999 filler-data filler-data-2
|
|
|
|
|
1000 1000 1000 filler-data filler-data-2
|
|
|
|
|
select * from t1 where
|
|
|
|
|
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
|
|
|
|
|
or key1 < 3 or key1 > @maxv-11;
|
|
|
|
|
pk key1 key2 filler filler2
|
|
|
|
|
990 990 990 filler-data filler-data-2
|
|
|
|
|
1 1 1 filler-data filler-data-2
|
|
|
|
|
2 2 2 filler-data filler-data-2
|
|
|
|
|
3 3 3 filler-data filler-data-2
|
|
|
|
|
4 4 4 filler-data filler-data-2
|
|
|
|
|
11 11 11 filler-data filler-data-2
|
|
|
|
|
12 12 12 filler-data filler-data-2
|
|
|
|
|
13 13 13 filler-data filler-data-2
|
|
|
|
|
14 14 14 filler-data filler-data-2
|
|
|
|
|
50 50 50 filler-data filler-data-2
|
|
|
|
|
51 51 51 filler-data filler-data-2
|
|
|
|
|
52 52 52 filler-data filler-data-2
|
|
|
|
|
53 53 53 filler-data filler-data-2
|
|
|
|
|
54 54 54 filler-data filler-data-2
|
|
|
|
|
991 991 991 filler-data filler-data-2
|
|
|
|
|
992 992 992 filler-data filler-data-2
|
|
|
|
|
993 993 993 filler-data filler-data-2
|
|
|
|
|
994 994 994 filler-data filler-data-2
|
|
|
|
|
995 995 995 filler-data filler-data-2
|
|
|
|
|
996 996 996 filler-data filler-data-2
|
|
|
|
|
997 997 997 filler-data filler-data-2
|
|
|
|
|
998 998 998 filler-data filler-data-2
|
|
|
|
|
999 999 999 filler-data filler-data-2
|
|
|
|
|
1000 1000 1000 filler-data filler-data-2
|
|
|
|
|
select * from t1 where
|
|
|
|
|
(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
|
|
|
|
|
or
|
|
|
|
|
(key1 < 5) or (key1 > 10 and key1 < 15) or (key1 >= 50 and key1 < 55 ) or (key1 > @maxv-10);
|
|
|
|
|
pk key1 key2 filler filler2
|
|
|
|
|
1 1 1 filler-data filler-data-2
|
|
|
|
|
2 2 2 filler-data filler-data-2
|
|
|
|
|
3 3 3 filler-data filler-data-2
|
|
|
|
|
4 4 4 filler-data filler-data-2
|
|
|
|
|
11 11 11 filler-data filler-data-2
|
|
|
|
|
12 12 12 filler-data filler-data-2
|
|
|
|
|
13 13 13 filler-data filler-data-2
|
|
|
|
|
14 14 14 filler-data filler-data-2
|
|
|
|
|
50 50 50 filler-data filler-data-2
|
|
|
|
|
51 51 51 filler-data filler-data-2
|
|
|
|
|
52 52 52 filler-data filler-data-2
|
|
|
|
|
53 53 53 filler-data filler-data-2
|
|
|
|
|
54 54 54 filler-data filler-data-2
|
|
|
|
|
991 991 991 filler-data filler-data-2
|
|
|
|
|
992 992 992 filler-data filler-data-2
|
|
|
|
|
993 993 993 filler-data filler-data-2
|
|
|
|
|
994 994 994 filler-data filler-data-2
|
|
|
|
|
995 995 995 filler-data filler-data-2
|
|
|
|
|
996 996 996 filler-data filler-data-2
|
|
|
|
|
997 997 997 filler-data filler-data-2
|
|
|
|
|
998 998 998 filler-data filler-data-2
|
|
|
|
|
999 999 999 filler-data filler-data-2
|
|
|
|
|
1000 1000 1000 filler-data filler-data-2
|
|
|
|
|
select * from t1 where
|
|
|
|
|
(pk > 10 and pk < 15) or (pk >= 50 and pk < 55 )
|
|
|
|
|
or
|
|
|
|
|
(key1 < 5) or (key1 > @maxv-10);
|
|
|
|
|
pk key1 key2 filler filler2
|
|
|
|
|
1 1 1 filler-data filler-data-2
|
|
|
|
|
2 2 2 filler-data filler-data-2
|
|
|
|
|
3 3 3 filler-data filler-data-2
|
|
|
|
|
4 4 4 filler-data filler-data-2
|
|
|
|
|
991 991 991 filler-data filler-data-2
|
|
|
|
|
992 992 992 filler-data filler-data-2
|
|
|
|
|
993 993 993 filler-data filler-data-2
|
|
|
|
|
994 994 994 filler-data filler-data-2
|
|
|
|
|
995 995 995 filler-data filler-data-2
|
|
|
|
|
996 996 996 filler-data filler-data-2
|
|
|
|
|
997 997 997 filler-data filler-data-2
|
|
|
|
|
998 998 998 filler-data filler-data-2
|
|
|
|
|
999 999 999 filler-data filler-data-2
|
|
|
|
|
1000 1000 1000 filler-data filler-data-2
|
|
|
|
|
11 11 11 filler-data filler-data-2
|
|
|
|
|
12 12 12 filler-data filler-data-2
|
|
|
|
|
13 13 13 filler-data filler-data-2
|
|
|
|
|
14 14 14 filler-data filler-data-2
|
|
|
|
|
50 50 50 filler-data filler-data-2
|
|
|
|
|
51 51 51 filler-data filler-data-2
|
|
|
|
|
52 52 52 filler-data filler-data-2
|
|
|
|
|
53 53 53 filler-data filler-data-2
|
|
|
|
|
54 54 54 filler-data filler-data-2
|
|
|
|
|
drop table t1;
|
|
|
|
|
#---------------- Clustered PK ROR-index_merge tests -----------------------------
|
|
|
|
|
SET SESSION STORAGE_ENGINE = InnoDB;
|
|
|
|
|
drop table if exists t1;
|
|
|
|
|
create table t1
|
|
|
|
|
(
|
|
|
|
|
pk1 int not null,
|
|
|
|
|
pk2 int not null,
|
|
|
|
|
key1 int not null,
|
|
|
|
|
key2 int not null,
|
|
|
|
|
pktail1ok int not null,
|
|
|
|
|
pktail2ok int not null,
|
|
|
|
|
pktail3bad int not null,
|
|
|
|
|
pktail4bad int not null,
|
|
|
|
|
pktail5bad int not null,
|
|
|
|
|
pk2copy int not null,
|
|
|
|
|
badkey int not null,
|
|
|
|
|
filler1 char (200),
|
|
|
|
|
filler2 char (200),
|
|
|
|
|
key (key1),
|
|
|
|
|
key (key2),
|
|
|
|
|
/* keys with tails from CPK members */
|
|
|
|
|
key (pktail1ok, pk1),
|
|
|
|
|
key (pktail2ok, pk1, pk2),
|
|
|
|
|
key (pktail3bad, pk2, pk1),
|
|
|
|
|
key (pktail4bad, pk1, pk2copy),
|
|
|
|
|
key (pktail5bad, pk1, pk2, pk2copy),
|
|
|
|
|
primary key (pk1, pk2)
|
|
|
|
|
);
|
|
|
|
|
explain select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2016-12-27 19:40:07 +01:00
|
|
|
1 SIMPLE t1 range PRIMARY,key1 PRIMARY 8 NULL 10 Using where
|
2006-08-16 14:58:49 +02:00
|
|
|
select * from t1 where pk1 = 1 and pk2 < 80 and key1=0;
|
|
|
|
|
pk1 pk2 key1 key2 pktail1ok pktail2ok pktail3bad pktail4bad pktail5bad pk2copy badkey filler1 filler2
|
|
|
|
|
1 10 0 0 0 0 0 0 0 10 0 filler-data-10 filler2
|
|
|
|
|
1 11 0 0 0 0 0 0 0 11 0 filler-data-11 filler2
|
|
|
|
|
1 12 0 0 0 0 0 0 0 12 0 filler-data-12 filler2
|
|
|
|
|
1 13 0 0 0 0 0 0 0 13 0 filler-data-13 filler2
|
|
|
|
|
1 14 0 0 0 0 0 0 0 14 0 filler-data-14 filler2
|
|
|
|
|
1 15 0 0 0 0 0 0 0 15 0 filler-data-15 filler2
|
|
|
|
|
1 16 0 0 0 0 0 0 0 16 0 filler-data-16 filler2
|
|
|
|
|
1 17 0 0 0 0 0 0 0 17 0 filler-data-17 filler2
|
|
|
|
|
1 18 0 0 0 0 0 0 0 18 0 filler-data-18 filler2
|
|
|
|
|
1 19 0 0 0 0 0 0 0 19 0 filler-data-19 filler2
|
|
|
|
|
explain select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 index_merge key1,key2 key1,key2 4,4 NULL 1 Using intersect(key1,key2); Using where; Using index
|
|
|
|
|
select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
|
|
|
|
|
pk1 pk2
|
|
|
|
|
95 50
|
|
|
|
|
95 51
|
|
|
|
|
95 52
|
|
|
|
|
95 53
|
|
|
|
|
95 54
|
|
|
|
|
95 55
|
|
|
|
|
95 56
|
|
|
|
|
95 57
|
|
|
|
|
95 58
|
|
|
|
|
95 59
|
|
|
|
|
explain select * from t1 where badkey=1 and key1=10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 ref key1 key1 4 const 100 Using where
|
2014-02-24 22:18:13 +01:00
|
|
|
set @tmp_index_merge_ror_cpk=@@optimizer_switch;
|
|
|
|
|
set optimizer_switch='extended_keys=off';
|
2006-08-16 14:58:49 +02:00
|
|
|
explain select * from t1 where pk1 < 7500 and key1 = 10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 index_merge PRIMARY,key1 key1,PRIMARY 4,4 NULL ROWS Using intersect(key1,PRIMARY); Using where
|
2014-02-24 22:18:13 +01:00
|
|
|
set optimizer_switch=@tmp_index_merge_ror_cpk;
|
2006-08-16 14:58:49 +02:00
|
|
|
explain select * from t1 where pktail1ok=1 and key1=10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 index_merge key1,pktail1ok key1,pktail1ok 4,4 NULL 1 Using intersect(key1,pktail1ok); Using where
|
|
|
|
|
explain select * from t1 where pktail2ok=1 and key1=10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 index_merge key1,pktail2ok key1,pktail2ok 4,4 NULL 1 Using intersect(key1,pktail2ok); Using where
|
|
|
|
|
explain select * from t1 where (pktail2ok=1 and pk1< 50000) or key1=10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2016-12-27 19:40:07 +01:00
|
|
|
1 SIMPLE t1 index_merge PRIMARY,key1,pktail2ok pktail2ok,key1 8,4 NULL 200 Using sort_union(pktail2ok,key1); Using where
|
2006-08-16 14:58:49 +02:00
|
|
|
explain select * from t1 where pktail3bad=1 and key1=10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 ref key1,pktail3bad key1 4 const 100 Using where
|
|
|
|
|
explain select * from t1 where pktail4bad=1 and key1=10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 ref key1,pktail4bad key1 4 const 100 Using where
|
|
|
|
|
explain select * from t1 where pktail5bad=1 and key1=10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 ref key1,pktail5bad key1 4 const 100 Using where
|
|
|
|
|
explain select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 index_merge key1,key2 key1,key2 4,4 NULL 1 Using intersect(key1,key2); Using where; Using index
|
|
|
|
|
select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
|
|
|
|
|
pk1 pk2 key1 key2
|
|
|
|
|
95 50 10 10
|
|
|
|
|
95 51 10 10
|
|
|
|
|
95 52 10 10
|
|
|
|
|
95 53 10 10
|
|
|
|
|
95 54 10 10
|
|
|
|
|
95 55 10 10
|
|
|
|
|
95 56 10 10
|
|
|
|
|
95 57 10 10
|
|
|
|
|
95 58 10 10
|
|
|
|
|
95 59 10 10
|
|
|
|
|
drop table t1;
|
|
|
|
|
create table t1
|
|
|
|
|
(
|
|
|
|
|
RUNID varchar(22),
|
|
|
|
|
SUBMITNR varchar(5),
|
|
|
|
|
ORDERNR char(1),
|
|
|
|
|
PROGRAMM varchar(8),
|
|
|
|
|
TESTID varchar(4),
|
|
|
|
|
UCCHECK char(1),
|
|
|
|
|
ETEXT varchar(80),
|
|
|
|
|
ETEXT_TYPE char(1),
|
|
|
|
|
INFO char(1),
|
|
|
|
|
SEVERITY tinyint(3),
|
|
|
|
|
TADIRFLAG char(1),
|
|
|
|
|
PRIMARY KEY (RUNID,SUBMITNR,ORDERNR,PROGRAMM,TESTID,UCCHECK),
|
|
|
|
|
KEY `TVERM~KEY` (PROGRAMM,TESTID,UCCHECK)
|
|
|
|
|
) DEFAULT CHARSET=latin1;
|
|
|
|
|
update t1 set `ETEXT` = '', `ETEXT_TYPE`='', `INFO`='', `SEVERITY`='', `TADIRFLAG`=''
|
|
|
|
|
WHERE
|
|
|
|
|
`RUNID`= '' AND `SUBMITNR`= '' AND `ORDERNR`='' AND `PROGRAMM`='' AND
|
|
|
|
|
`TESTID`='' AND `UCCHECK`='';
|
|
|
|
|
drop table t1;
|
2010-09-16 14:13:53 +02:00
|
|
|
#
|
|
|
|
|
# Bug#50402 Optimizer producing wrong results when using Index Merge on InnoDB
|
|
|
|
|
#
|
|
|
|
|
CREATE TABLE t1 (f1 INT, PRIMARY KEY (f1));
|
|
|
|
|
INSERT INTO t1 VALUES (2);
|
|
|
|
|
CREATE TABLE t2 (f1 INT, f2 INT, f3 char(1),
|
|
|
|
|
PRIMARY KEY (f1), KEY (f2), KEY (f3) );
|
|
|
|
|
INSERT INTO t2 VALUES (1, 1, 'h'), (2, 3, 'h'), (3, 2, ''), (4, 2, '');
|
|
|
|
|
SELECT t1.f1 FROM t1
|
|
|
|
|
WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
|
|
|
|
|
f1
|
|
|
|
|
2
|
|
|
|
|
EXPLAIN SELECT t1.f1 FROM t1
|
|
|
|
|
WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 Using index
|
Patch for mdev-287: CHEAP SQ: A query with subquery in SELECT list, EXISTS, inner joins takes hundreds times longer
Analysis:
The fix for lp:944706 introduces early subquery optimization.
While a subquery is being optimized some of its predicates may be
removed. In the test case, the EXISTS subquery is constant, and is
evaluated to TRUE. As a result the whole OR is TRUE, and thus the
correlated condition "b = alias1.b" is optimized away. The subquery
becomes non-correlated.
The subquery cache is designed to work only for correlated subqueries.
If constant subquery optimization is disallowed, then the constant
subquery is not evaluated, the subquery remains correlated, and its
execution is cached. As a result execution is fast.
However, when the constant subquery was optimized away, it was neither
cached by the subquery cache, nor it was cached by the internal subquery
caching. The latter was due to the fact that the subquery still appeared
as correlated to the subselect_XYZ_engine::exec methods, and they
re-executed the subquery on each call to Item_subselect::exec.
Solution:
The solution is to update the correlated status of the subquery after it has
been optimized. This status consists of:
- st_select_lex::is_correlated
- Item_subselect::is_correlated
- SELECT_LEX::uncacheable
- SELECT_LEX_UNIT::uncacheable
The status is updated by st_select_lex::update_correlated_cache(), and its
caller st_select_lex::optimize_unflattened_subqueries. The solution relies
on the fact that the optimizer already called
st_select_lex::update_used_tables() for each subquery. This allows to
efficiently update the correlated status of each subquery without walking
the whole subquery tree.
Notice that his patch is an improvement over MySQL 5.6 and older, where
subqueries are not pre-optimized, and the above analysis is not possible.
2012-05-29 23:18:53 +02:00
|
|
|
2 SUBQUERY t2 index_merge f2,f3 f3,f2 2,5 NULL 1 Using intersect(f3,f2); Using where; Using index
|
2010-09-16 14:13:53 +02:00
|
|
|
DROP TABLE t1,t2;
|
2010-09-20 03:46:39 +02:00
|
|
|
#
|
|
|
|
|
# BUG#56862/640419: Wrong result with sort_union index merge when one
|
|
|
|
|
# of the merged index scans is the primary key scan
|
|
|
|
|
#
|
|
|
|
|
CREATE TABLE t1 (
|
|
|
|
|
pk int NOT NULL AUTO_INCREMENT PRIMARY KEY,
|
|
|
|
|
a int,
|
|
|
|
|
b int,
|
|
|
|
|
INDEX idx(a))
|
|
|
|
|
ENGINE=INNODB;
|
|
|
|
|
INSERT INTO t1(a,b) VALUES
|
|
|
|
|
(11, 1100), (2, 200), (1, 100), (14, 1400), (5, 500),
|
|
|
|
|
(3, 300), (17, 1700), (4, 400), (12, 1200), (8, 800),
|
|
|
|
|
(6, 600), (18, 1800), (9, 900), (10, 1000), (7, 700),
|
|
|
|
|
(13, 1300), (15, 1500), (19, 1900), (16, 1600), (20, 2000);
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a+20, b+2000 FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a+40, b+4000 FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a+80, b+8000 FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1(a,b) SELECT a,b FROM t1;
|
|
|
|
|
INSERT INTO t1 VALUES (1000000, 0, 0);
|
|
|
|
|
SET SESSION sort_buffer_size = 1024*36;
|
2011-11-26 23:23:00 +01:00
|
|
|
set @tmp_optimizer_switch=@@optimizer_switch;
|
|
|
|
|
set optimizer_switch='derived_merge=off,derived_with_keys=off';
|
2010-09-20 03:46:39 +02:00
|
|
|
EXPLAIN
|
|
|
|
|
SELECT COUNT(*) FROM
|
2010-12-06 10:25:04 +01:00
|
|
|
(SELECT * FROM t1 FORCE INDEX(primary,idx)
|
2010-09-20 03:46:39 +02:00
|
|
|
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2016-12-27 19:40:07 +01:00
|
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6145
|
|
|
|
|
2 DERIVED t1 index_merge PRIMARY,idx idx,PRIMARY 5,4 NULL 6145 Using sort_union(idx,PRIMARY); Using where
|
2010-09-20 03:46:39 +02:00
|
|
|
SELECT COUNT(*) FROM
|
2010-12-07 23:48:04 +01:00
|
|
|
(SELECT * FROM t1 FORCE INDEX(primary,idx)
|
2010-09-20 03:46:39 +02:00
|
|
|
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
|
|
|
|
|
COUNT(*)
|
|
|
|
|
6145
|
|
|
|
|
EXPLAIN
|
|
|
|
|
SELECT COUNT(*) FROM
|
|
|
|
|
(SELECT * FROM t1 IGNORE INDEX(idx)
|
|
|
|
|
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2011-07-21 23:23:08 +02:00
|
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL #
|
|
|
|
|
2 DERIVED t1 ALL PRIMARY NULL NULL NULL # Using where
|
2010-09-20 03:46:39 +02:00
|
|
|
SELECT COUNT(*) FROM
|
|
|
|
|
(SELECT * FROM t1 IGNORE INDEX(idx)
|
|
|
|
|
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
|
|
|
|
|
COUNT(*)
|
|
|
|
|
6145
|
|
|
|
|
DROP TABLE t1;
|
2011-11-26 23:23:00 +01:00
|
|
|
set optimizer_switch=@tmp_optimizer_switch;
|
2011-01-13 22:15:44 +01:00
|
|
|
#
|
|
|
|
|
# Testcase Backport: BUG#48093: 6.0 Server not processing equivalent IN clauses properly
|
|
|
|
|
# with Innodb tables
|
|
|
|
|
#
|
|
|
|
|
CREATE TABLE t1 (
|
|
|
|
|
i int(11) DEFAULT NULL,
|
|
|
|
|
v1 varchar(1) DEFAULT NULL,
|
|
|
|
|
v2 varchar(20) DEFAULT NULL,
|
|
|
|
|
KEY i (i),
|
|
|
|
|
KEY v (v1,i)
|
|
|
|
|
) ENGINE=innodb;
|
|
|
|
|
INSERT INTO t1 VALUES (1,'f','no');
|
|
|
|
|
INSERT INTO t1 VALUES (2,'u','yes-u');
|
|
|
|
|
INSERT INTO t1 VALUES (2,'h','yes-h');
|
|
|
|
|
INSERT INTO t1 VALUES (3,'d','no');
|
|
|
|
|
|
|
|
|
|
SELECT v2
|
|
|
|
|
FROM t1
|
|
|
|
|
WHERE v1 IN ('f', 'd', 'h', 'u' ) AND i = 2;
|
|
|
|
|
v2
|
|
|
|
|
yes-u
|
|
|
|
|
yes-h
|
|
|
|
|
|
|
|
|
|
# Should not use index_merge
|
|
|
|
|
EXPLAIN
|
|
|
|
|
SELECT v2
|
|
|
|
|
FROM t1
|
|
|
|
|
WHERE v1 IN ('f', 'd', 'h', 'u' ) AND i = 2;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t1 ref i,v i 5 const 2 Using where
|
|
|
|
|
DROP TABLE t1;
|
2012-06-02 01:25:56 +02:00
|
|
|
#
|
|
|
|
|
# BUG#1006164: Multi-table DELETE that uses innodb + index_merge/intersect may fail to delete rows
|
|
|
|
|
#
|
|
|
|
|
create table t0(a int);
|
|
|
|
|
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
|
|
|
create table t1 (
|
|
|
|
|
pk int auto_increment,
|
|
|
|
|
zone_id int,
|
|
|
|
|
modified tinyint,
|
|
|
|
|
primary key(pk),
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key (zone_id),
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key (modified)
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|
) engine=innodb;
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insert into t1 (zone_id, modified) select 0,0 from t0 A, t0 B, t0 C, t0 D;
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update t1 set zone_id=487, modified=9 where pk=7259;
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update t1 set zone_id=487, modified=9 where pk=7260;
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update t1 set zone_id=830, modified=9 where pk=8434;
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update t1 set zone_id=830, modified=9 where pk=8435;
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update t1 set zone_id=830, modified=9 where pk=8436;
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|
update t1 set zone_id=830, modified=9 where pk=8437;
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|
select * from t1 where t1.zone_id=830 AND modified=9;
|
|
|
|
|
pk zone_id modified
|
|
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|
|
8434 830 9
|
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|
8435 830 9
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|
8436 830 9
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|
8437 830 9
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|
|
begin;
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|
|
DELETE t1 FROM t1 WHERE t1.zone_id=830 AND modified=9;
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|
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|
|
commit;
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|
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|
|
select * from t1 where t1.zone_id=830 AND modified=9;
|
|
|
|
|
pk zone_id modified
|
|
|
|
|
drop table t0, t1;
|
2012-07-04 12:34:45 +02:00
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|
|
#
|
|
|
|
|
# MDEV-376: Wrong result (missing rows) with index_merge+index_merge_intersection, join
|
|
|
|
|
#
|
|
|
|
|
CREATE TABLE t1 (
|
|
|
|
|
a INT, b CHAR(1), c CHAR(1), KEY(a), KEY(b)
|
|
|
|
|
) ENGINE=InnoDB;
|
|
|
|
|
INSERT INTO t1 VALUES (8,'v','v'),(8,'m','m'),(9,'d','d');
|
|
|
|
|
SELECT ta.* FROM t1 AS ta, t1 AS tb
|
|
|
|
|
WHERE ( tb.b != ta.b OR tb.a = ta.a )
|
|
|
|
|
AND ( tb.b = ta.c OR tb.b = ta.b );
|
|
|
|
|
a b c
|
|
|
|
|
8 v v
|
|
|
|
|
8 m m
|
|
|
|
|
9 d d
|
|
|
|
|
DROP TABLE t1;
|
2010-12-02 08:39:39 +01:00
|
|
|
set optimizer_switch= @optimizer_switch_save;
|
2016-12-22 11:21:37 +01:00
|
|
|
#
|
|
|
|
|
# MDEV-10927: Crash When Using sort_union Optimization
|
|
|
|
|
#
|
|
|
|
|
set @tmp_optimizer_switch=@@optimizer_switch;
|
|
|
|
|
SET optimizer_switch='index_merge_sort_intersection=on';
|
|
|
|
|
SET SESSION sort_buffer_size = 1024;
|
|
|
|
|
create table t1 (
|
|
|
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
|
|
|
col1 int(11) NOT NULL,
|
|
|
|
|
col2 int(11) NOT NULL,
|
|
|
|
|
col3 int(11) NOT NULL,
|
|
|
|
|
key2 int(11) NOT NULL,
|
|
|
|
|
col4 int(11) NOT NULL,
|
|
|
|
|
key1 int(11) NOT NULL,
|
|
|
|
|
PRIMARY KEY (pk),
|
|
|
|
|
KEY key1 (key1),
|
|
|
|
|
KEY key2 (key2)
|
|
|
|
|
) ENGINE=InnoDB AUTO_INCREMENT=12860259 DEFAULT CHARSET=utf8 ROW_FORMAT=COMPACT;
|
|
|
|
|
create table t2(a int);
|
|
|
|
|
insert into t2 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
|
|
|
create table t3(a int);
|
|
|
|
|
insert into t3 select A.a + B.a* 10 + C.a * 100 + D.a*1000 from t2 A, t2 B, t2 C, t2 D;
|
|
|
|
|
insert into t1 (key1, key2, col1,col2,col3,col4)
|
|
|
|
|
select a,a, a,a,a,a from t3;
|
|
|
|
|
SELECT sum(col1) FROM t1 FORCE INDEX (key1,key2) WHERE (key1 between 10 and 8191+10) or (key2= 5);
|
|
|
|
|
sum(col1)
|
|
|
|
|
33632261
|
|
|
|
|
drop table t1,t2,t3;
|
|
|
|
|
set optimizer_switch=@tmp_optimizer_switch;
|