194 lines
6.7 KiB
Plaintext
194 lines
6.7 KiB
Plaintext
SET debug= '+d,test_bka_unique';
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set optimizer_switch='batched_key_access=on,mrr_cost_based=off';
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set optimizer_switch='semijoin=on,materialization=on,firstmatch=on,loosescan=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=off';
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create table t0 (a int);
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insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),
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(10),(12),(14),(16),(18);
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create table t1 (
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a int,
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b int
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) engine=innodb;
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insert into t1 values (1,1),(1,1),(2,2);
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create table t2 (
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a int,
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b int,
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key(b)
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) engine=innodb;
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insert into t2 select a, a/2 from t0;
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select * from t1;
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a b
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1 1
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1 1
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2 2
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select * from t2;
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a b
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0 0
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1 1
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2 1
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3 2
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4 2
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5 3
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6 3
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7 4
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8 4
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9 5
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10 5
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12 6
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14 7
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16 8
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18 9
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explain select * from t2 where b in (select a from t1);
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE <subquery2> NULL ALL NULL NULL NULL NULL NULL 100.00 Using where
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1 SIMPLE t2 NULL ref b b 5 <subquery2>.a 1 100.00 Using join buffer (Batched Key Access (unique))
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2 MATERIALIZED t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` semi join (`test`.`t1`) where (`test`.`t2`.`b` = `<subquery2>`.`a`)
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select * from t2 where b in (select a from t1);
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a b
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1 1
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2 1
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3 2
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4 2
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truncate table t0;
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insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t3 (
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a int,
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b int,
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key(b),
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pk1 char(200), pk2 char(200), pk3 char(200),
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primary key(pk1, pk2, pk3)
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) engine=innodb;
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insert into t3 select a,a, a,a,a from t0;
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explain select * from t3 where b in (select a from t1);
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE <subquery2> NULL ALL NULL NULL NULL NULL NULL 100.00 Using where
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1 SIMPLE t3 NULL ref b b 5 <subquery2>.a 1 100.00 Using join buffer (Batched Key Access (unique))
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2 MATERIALIZED t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t3`.`pk1` AS `pk1`,`test`.`t3`.`pk2` AS `pk2`,`test`.`t3`.`pk3` AS `pk3` from `test`.`t3` semi join (`test`.`t1`) where (`test`.`t3`.`b` = `<subquery2>`.`a`)
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select * from t3 where b in (select a from t1);
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a b pk1 pk2 pk3
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1 1 1 1 1
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2 2 2 2 2
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set @save_max_heap_table_size= @@max_heap_table_size;
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set max_heap_table_size=16384;
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set @save_join_buffer_size = @@join_buffer_size;
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set join_buffer_size= 8192;
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drop table t3;
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create table t3 (
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a int,
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b int,
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key(b),
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pk1 char(200), pk2 char(200),
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primary key(pk1, pk2)
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) engine=innodb;
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insert into t3 select
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A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a, A.a + 10*B.a
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from t0 A, t0 B where B.a <5;
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explain select * from t3 where b in (select a from t0);
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE <subquery2> NULL ALL NULL NULL NULL NULL # 100.00 Using where
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1 SIMPLE t3 NULL ref b b 5 <subquery2>.a # 100.00 Using join buffer (Batched Key Access (unique))
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2 MATERIALIZED t0 NULL ALL NULL NULL NULL NULL # 100.00 NULL
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t3`.`pk1` AS `pk1`,`test`.`t3`.`pk2` AS `pk2` from `test`.`t3` semi join (`test`.`t0`) where (`test`.`t3`.`b` = `<subquery2>`.`a`)
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select * from t3 where b in (select a.a+b.a from t0 a, t0 b where b.a<5);
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a b pk1 pk2
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0 0 0 0
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1 1 1 1
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10 10 10 10
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11 11 11 11
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12 12 12 12
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13 13 13 13
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2 2 2 2
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3 3 3 3
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4 4 4 4
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5 5 5 5
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6 6 6 6
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7 7 7 7
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8 8 8 8
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9 9 9 9
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set join_buffer_size= @save_join_buffer_size;
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set max_heap_table_size= @save_max_heap_table_size;
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explain select * from t1 where a in (select b from t2);
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
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1 SIMPLE t2 NULL ref b b 5 test.t1.a 1 100.00 Using index; FirstMatch(t1)
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join (`test`.`t2`) where (`test`.`t2`.`b` = `test`.`t1`.`a`)
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select * from t1;
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a b
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1 1
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1 1
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2 2
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select * from t1 where a in (select b from t2);
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a b
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1 1
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1 1
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2 2
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drop table t0, t1, t2, t3;
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create table t1 (a int);
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insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t2 (a char(200), b char(200), c char(200), primary key (a,b,c)) engine=innodb;
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insert into t2 select concat(a, repeat('X',198)),repeat('B',200),repeat('B',200) from t1;
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insert into t2 select concat(a, repeat('Y',198)),repeat('B',200),repeat('B',200) from t1;
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alter table t2 add filler1 int;
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insert into t1 select A.a + 10*(B.a + 10*C.a) from t1 A, t1 B, t1 C;
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set @save_join_buffer_size=@@join_buffer_size;
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set join_buffer_size=1;
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select * from t2 where filler1 in ( select a from t1);
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a b c filler1
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set join_buffer_size=default;
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drop table t1, t2;
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BUG#42740: crash in optimize_semijoin_nests
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create table t1 (c6 timestamp,key (c6)) engine=innodb;
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create table t2 (c2 double) engine=innodb;
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explain select 1 from t2 where c2 = any (select log10(null) from t1 where c6 <null) ;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `1` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`c6` < NULL) and multiple equal(log10(NULL), `test`.`t2`.`c2`))
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drop table t1, t2;
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#
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# BUG#42742: crash in setup_sj_materialization, Copy_field::set
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#
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create table t3 ( c1 year) charset latin1 engine=innodb;
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insert into t3 values (2135),(2142);
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create table t2 (c1 tinytext,c2 text,c6 timestamp) charset latin1 engine=innodb;
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# The following must not crash, EXPLAIN should show one SJ strategy, not a mix:
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explain select 1 from t2 where
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c2 in (select 1 from t3, t2) and
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c1 in (select convert(c6,char(1)) from t2);
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 1 100.00 Using where
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1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 1 100.00 NULL
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1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 1 100.00 Using where
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1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 2 100.00 FirstMatch(t2)
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `1` from `test`.`t2` semi join (`test`.`t3` join `test`.`t2`) semi join (`test`.`t2`) where ((`test`.`t2`.`c2` = 1) and (convert(`test`.`t2`.`c1` using utf8mb4) = cast(`test`.`t2`.`c6` as char(1) charset utf8mb4)))
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drop table t2, t3;
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#
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# BUG#57431: subquery returns wrong result (semijoin=on) with pred AND
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#
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CREATE TABLE t1 (
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i INT
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) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (2),(4);
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CREATE TABLE t2 (
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i INT,
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vc VARCHAR(1)
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) ENGINE=InnoDB;
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INSERT INTO t2 VALUES (8,NULL);
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SELECT i
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FROM t1
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WHERE i IN (SELECT innr.i
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FROM t2 LEFT JOIN t2 innr ON innr.vc)
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AND i = 2;
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i
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DROP TABLE t1, t2;
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set optimizer_switch=default;
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set optimizer_switch=default;
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