mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 12:02:42 +01:00
3069 lines
148 KiB
Text
3069 lines
148 KiB
Text
set @subselect_mat_test_optimizer_switch_value='materialization=on,in_to_exists=off,semijoin=off';
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set optimizer_switch=ifnull(@subselect_mat_test_optimizer_switch_value, 'semijoin=on,firstmatch=on,loosescan=on,semijoin_with_cache=on');
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set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
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set @optimizer_switch_local_default= @@optimizer_switch;
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set @save_join_cache_level=@@join_cache_level;
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set join_cache_level=1;
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drop table if exists t1, t2, t3, t4, t5, t1i, t2i, t3i;
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drop table if exists columns;
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drop table if exists t1_16, t2_16, t3_16;
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drop view if exists v1, v2, v1m, v2m;
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create table t1 (a1 char(8), a2 char(8)) charset=latin1;
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create table t2 (b1 char(8), b2 char(8)) charset=latin1;
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create table t3 (c1 char(8), c2 char(8)) charset=latin1;
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insert into t1 values ('1 - 00', '2 - 00');
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insert into t1 values ('1 - 01', '2 - 01');
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insert into t1 values ('1 - 02', '2 - 02');
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insert into t2 values ('1 - 01', '2 - 01');
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insert into t2 values ('1 - 01', '2 - 01');
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insert into t2 values ('1 - 02', '2 - 02');
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insert into t2 values ('1 - 02', '2 - 02');
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insert into t2 values ('1 - 03', '2 - 03');
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insert into t3 values ('1 - 01', '2 - 01');
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insert into t3 values ('1 - 02', '2 - 02');
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insert into t3 values ('1 - 03', '2 - 03');
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insert into t3 values ('1 - 04', '2 - 04');
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create table t1i (a1 char(8), a2 char(8)) charset=latin1;
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create table t2i (b1 char(8), b2 char(8)) charset=latin1;
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create table t3i (c1 char(8), c2 char(8)) charset=latin1;
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create index it1i1 on t1i (a1);
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create index it1i2 on t1i (a2);
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create index it1i3 on t1i (a1, a2);
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create index it2i1 on t2i (b1);
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create index it2i2 on t2i (b2);
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create index it2i3 on t2i (b1, b2);
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create index it3i1 on t3i (c1);
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create index it3i2 on t3i (c2);
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create index it3i3 on t3i (c1, c2);
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insert into t1i select * from t1;
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insert into t2i select * from t2;
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insert into t3i select * from t3;
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analyze table t1,t2,t3,t1i,t2i,t3i;
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Table Op Msg_type Msg_text
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test.t1 analyze status Engine-independent statistics collected
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test.t1 analyze status OK
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test.t2 analyze status Engine-independent statistics collected
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test.t2 analyze status OK
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test.t3 analyze status Engine-independent statistics collected
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test.t3 analyze status OK
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test.t1i analyze status Engine-independent statistics collected
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test.t1i analyze status Table is already up to date
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test.t2i analyze status Engine-independent statistics collected
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test.t2i analyze status Table is already up to date
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test.t3i analyze status Engine-independent statistics collected
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test.t3i analyze status Table is already up to date
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set @@optimizer_switch='materialization=on,in_to_exists=off,firstmatch=off';
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/******************************************************************************
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* Simple tests.
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******************************************************************************/
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# non-indexed nullable fields
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explain extended
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select * from t1 where a1 in (select b1 from t2 where b1 > '0');
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1` from `test`.`t2` where `test`.`t2`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1`))))
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select * from t1 where a1 in (select b1 from t2 where b1 > '0');
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1` from `test`.`t2` where `test`.`t2`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1`))))
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select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where `test`.`t2`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`b2`))))
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select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where `test`.`t2`.`b1` > '0' group by `test`.`t2`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`min(b2)`))))
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select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1i where a1 in (select b1 from t2i where b1 > '0');
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1i index NULL _it1_idx # NULL 3 100.00 Using where;
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2 MATERIALIZED t2i range it2i1,it2i3 it2i1 # NULL 5 100.00 Using where;
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (/* select#2 */ select `test`.`t2i`.`b1` from `test`.`t2i` where `test`.`t2i`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery2>`.`b1`))))
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select * from t1i where a1 in (select b1 from t2i where b1 > '0');
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1i index NULL # 18 # 3 100.00 #
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2 MATERIALIZED t2i range it2i1,it2i3 # 9 # 5 100.00 #
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`>(<in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (/* select#2 */ select max(`test`.`t2i`.`b1`) from `test`.`t2i` where `test`.`t2i`.`b1` > '0' group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery2>`.`max(b1)`))))
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select * from t1i where a1 in (select max(b1) from t2i where b1 > '0' group by b1);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1i index NULL _it1_idx # NULL 3 100.00 Using where;
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2 MATERIALIZED t2i range it2i1,it2i3 it2i3 # NULL 5 100.00 Using where;
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery2>`.`b1` and `test`.`t1i`.`a2` = `<subquery2>`.`b2`))))
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select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1i where (a1, a2) in (select b1, max(b2) from t2i where b1 > '0' group by b1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1i index NULL # # # 3 100.00 #
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2 MATERIALIZED t2i range it2i1,it2i3 # # # 5 100.00 #
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` where `test`.`t2i`.`b1` > '0' group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery2>`.`b1` and `test`.`t1i`.`a2` = `<subquery2>`.`max(b2)`))))
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select * from t1i where (a1, a2) in (select b1, max(b2) from t2i where b1 > '0' group by b1);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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explain extended
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select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1i index NULL # # # 3 100.00 #
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2 MATERIALIZED t2i range it2i1,it2i3 # # # 5 100.00 #
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where `test`.`t2i`.`b1` > '0' group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery2>`.`b1` and `test`.`t1i`.`a2` = `<subquery2>`.`min(b2)`))))
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select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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create table t2i_c like t2i;
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insert into t2i_c select * from t2i;
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insert into t2i_c select * from t2i;
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insert into t2i_c select * from t2i;
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insert into t2i_c select * from t2i;
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analyze table t2i_c;
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Table Op Msg_type Msg_text
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test.t2i_c analyze status Engine-independent statistics collected
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test.t2i_c analyze status OK
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show create table t2i_c;
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Table Create Table
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t2i_c CREATE TABLE `t2i_c` (
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`b1` char(8) DEFAULT NULL,
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`b2` char(8) DEFAULT NULL,
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KEY `it2i1` (`b1`),
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KEY `it2i2` (`b2`),
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KEY `it2i3` (`b1`,`b2`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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explain extended
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select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
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2 MATERIALIZED t2i_c range NULL it2i3 9 NULL 4 100.00 Using index for group-by
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2i_c`.`b1`,max(`test`.`t2i_c`.`b2`) from `test`.`t2i_c` group by `test`.`t2i_c`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`max(b2)`))))
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select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1)";
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execute st1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
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2 MATERIALIZED t2i_c range NULL it2i3 9 NULL 4 Using index for group-by
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execute st1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
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2 MATERIALIZED t2i_c range NULL it2i3 9 NULL 4 Using index for group-by
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prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i_c group by b1)";
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execute st2;
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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execute st2;
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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drop table t2i_c;
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explain extended
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select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
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2 MATERIALIZED t2i range it2i1,it2i3 it2i3 9 NULL 5 100.00 Using where; Using index
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where `test`.`t2i`.`b1` > '0' group by `test`.`t2i`.`b1` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`min(b2)`))))
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select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1);
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ERROR 42000: This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
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set @local_optimizer_switch=@@optimizer_switch;
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set @@optimizer_switch=@optimizer_switch_local_default;
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set @@optimizer_switch='semijoin=off';
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prepare st1 from
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"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
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set @@optimizer_switch=@optimizer_switch_local_default;
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set @@optimizer_switch='materialization=off,in_to_exists=on';
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execute st1;
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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set @@optimizer_switch=@optimizer_switch_local_default;
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set @@optimizer_switch='semijoin=off';
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execute st1;
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a1 a2
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1 - 01 2 - 01
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1 - 02 2 - 02
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set @@optimizer_switch=@optimizer_switch_local_default;
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set @@optimizer_switch='materialization=off,in_to_exists=on';
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prepare st1 from
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"select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1)";
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set @@optimizer_switch=@optimizer_switch_local_default;
|
|
set @@optimizer_switch='semijoin=off';
|
|
execute st1;
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
set @@optimizer_switch=@optimizer_switch_local_default;
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on';
|
|
execute st1;
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
set @@optimizer_switch=@local_optimizer_switch;
|
|
explain extended
|
|
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` order by `test`.`t2`.`b1`,`test`.`t2`.`b2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`b2`))))
|
|
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
explain extended
|
|
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index
|
|
2 MATERIALIZED t2i index NULL it2i3 18 NULL 5 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` order by `test`.`t2i`.`b1`,`test`.`t2i`.`b2` ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery2>`.`b1` and `test`.`t1i`.`a2` = `<subquery2>`.`b2`))))
|
|
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
/******************************************************************************
|
|
* Views, UNIONs, several levels of nesting.
|
|
******************************************************************************/
|
|
# materialize the result of subquery over temp-table view
|
|
create algorithm=merge view v1 as
|
|
select b1, c2 from t2, t3 where b2 > c2;
|
|
create algorithm=merge view v2 as
|
|
select b1, c2 from t2, t3 group by b2, c2;
|
|
Warnings:
|
|
Warning 1354 View merge algorithm can't be used here for now (assumed undefined algorithm)
|
|
create algorithm=temptable view v1m as
|
|
select b1, c2 from t2, t3 where b2 > c2;
|
|
create algorithm=temptable view v2m as
|
|
select b1, c2 from t2, t3 group by b2, c2;
|
|
select * from v1 where (c2, b1) in (select c2, b1 from v2 where b1 is not null);
|
|
b1 c2
|
|
1 - 02 2 - 01
|
|
1 - 02 2 - 01
|
|
1 - 03 2 - 01
|
|
1 - 03 2 - 02
|
|
select * from v1 where (c2, b1) in (select distinct c2, b1 from v2 where b1 is not null);
|
|
b1 c2
|
|
1 - 02 2 - 01
|
|
1 - 02 2 - 01
|
|
1 - 03 2 - 01
|
|
1 - 03 2 - 02
|
|
select * from v1m where (c2, b1) in (select c2, b1 from v2m where b1 is not null);
|
|
b1 c2
|
|
1 - 02 2 - 01
|
|
1 - 02 2 - 01
|
|
1 - 03 2 - 01
|
|
1 - 03 2 - 02
|
|
select * from v1m where (c2, b1) in (select distinct c2, b1 from v2m where b1 is not null);
|
|
b1 c2
|
|
1 - 02 2 - 01
|
|
1 - 02 2 - 01
|
|
1 - 03 2 - 01
|
|
1 - 03 2 - 02
|
|
drop view v1, v2, v1m, v2m;
|
|
explain extended
|
|
select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
4 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where `test`.`t2`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`b2`)))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#3 */ select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (/* select#4 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where `test`.`t3`.`c1` = `<subquery4>`.`b1` and `test`.`t3`.`c2` = `<subquery4>`.`b2`)))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery3>`.`c1` and `test`.`t1`.`a2` = `<subquery3>`.`c2`))))
|
|
select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
explain extended
|
|
select * from t1i
|
|
where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
|
|
(a1, a2) in (select c1, c2 from t3i
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1i index NULL # # # 3 100.00 #
|
|
3 MATERIALIZED t3i index NULL # # # 4 100.00 #
|
|
4 MATERIALIZED t2i index it2i2 # # # 5 100.00 #
|
|
2 MATERIALIZED t2i range it2i1,it2i3 # # # 5 100.00 #
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery2>`.`b1` and `test`.`t1i`.`a2` = `<subquery2>`.`b2`)))) and <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#3 */ select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c1`,`test`.`t3i`.`c2`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (/* select#4 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where `test`.`t3i`.`c1` = `<subquery4>`.`b1` and `test`.`t3i`.`c2` = `<subquery4>`.`b2`)))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery3>`.`c1` and `test`.`t1i`.`a2` = `<subquery3>`.`c2`))))
|
|
select * from t1i
|
|
where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
|
|
(a1, a2) in (select c1, c2 from t3i
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
explain extended
|
|
select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2
|
|
where b2 in (select c2 from t3 where c2 LIKE '%02') or
|
|
b2 in (select c2 from t3 where c2 LIKE '%03')) and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
5 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
6 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#3 */ select `test`.`t3`.`c2` from `test`.`t3` where `test`.`t3`.`c2` like '%02' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery3>`.`c2`)))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3`.`c2` from `test`.`t3` where `test`.`t3`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`)))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`b2`)))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#5 */ select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (/* select#6 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where `test`.`t3`.`c1` = `<subquery6>`.`b1` and `test`.`t3`.`c2` = `<subquery6>`.`b2`)))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery5>`.`c1` and `test`.`t1`.`a2` = `<subquery5>`.`c2`))))
|
|
select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2
|
|
where b2 in (select c2 from t3 where c2 LIKE '%02') or
|
|
b2 in (select c2 from t3 where c2 LIKE '%03')) and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
a1 a2
|
|
1 - 02 2 - 02
|
|
explain extended
|
|
select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2
|
|
where b2 in (select c2 from t3 t3a where c1 = a1) or
|
|
b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
|
|
(a1, a2) in (select c1, c2 from t3 t3c
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
5 MATERIALIZED t3c ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
6 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where `test`.`t3a`.`c1` = `test`.`t1`.`a1` and <cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where `test`.`t3b`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`))))) and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1` and <cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#5 */ select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where <expr_cache><`test`.`t3c`.`c1`,`test`.`t3c`.`c2`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),(`test`.`t3c`.`c1`,`test`.`t3c`.`c2`) in ( <materialize> (/* select#6 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3c`.`c1` in <temporary table> on distinct_key where `test`.`t3c`.`c1` = `<subquery6>`.`b1` and `test`.`t3c`.`c2` = `<subquery6>`.`b2`)))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery5>`.`c1` and `test`.`t1`.`a2` = `<subquery5>`.`c2`))))
|
|
select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2
|
|
where b2 in (select c2 from t3 t3a where c1 = a1) or
|
|
b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
|
|
(a1, a2) in (select c1, c2 from t3 t3c
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
explain extended
|
|
(select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2
|
|
where b2 in (select c2 from t3 where c2 LIKE '%02') or
|
|
b2 in (select c2 from t3 where c2 LIKE '%03')
|
|
group by b1, b2) and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
|
|
UNION
|
|
(select * from t1i
|
|
where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
|
|
(a1, a2) in (select c1, c2 from t3i
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL # # # 3 100.00 #
|
|
5 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
|
|
6 MATERIALIZED t2i index it2i2 # # # 5 100.00 #
|
|
2 MATERIALIZED t2 ALL NULL # # # 5 100.00 #
|
|
4 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
|
|
3 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
|
|
7 UNION t1i index NULL # # # 3 100.00 #
|
|
9 MATERIALIZED t3i index NULL # # # 4 100.00 #
|
|
10 MATERIALIZED t2i index it2i2 # # # 5 100.00 #
|
|
8 MATERIALIZED t2i range it2i1,it2i3 # # # 5 100.00 #
|
|
NULL UNION RESULT <union1,7> ALL NULL # # # NULL NULL #
|
|
Warnings:
|
|
Note 1003 (/* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#3 */ select `test`.`t3`.`c2` from `test`.`t3` where `test`.`t3`.`c2` like '%02' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery3>`.`c2`)))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3`.`c2` from `test`.`t3` where `test`.`t3`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`)))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery2>`.`b1` and `test`.`t1`.`a2` = `<subquery2>`.`b2`)))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#5 */ select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (/* select#6 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where `test`.`t3`.`c1` = `<subquery6>`.`b1` and `test`.`t3`.`c2` = `<subquery6>`.`b2`)))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery5>`.`c1` and `test`.`t1`.`a2` = `<subquery5>`.`c2`))))) union (/* select#7 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#8 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery8>`.`b1` and `test`.`t1i`.`a2` = `<subquery8>`.`b2`)))) and <expr_cache><`test`.`t1i`.`a1`,`test`.`t1i`.`a2`>(<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (/* select#9 */ select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <expr_cache><`test`.`t3i`.`c1`,`test`.`t3i`.`c2`>(<in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (/* select#10 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3i`.`c1` in <temporary table> on distinct_key where `test`.`t3i`.`c1` = `<subquery10>`.`b1` and `test`.`t3i`.`c2` = `<subquery10>`.`b2`)))) ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on distinct_key where `test`.`t1i`.`a1` = `<subquery9>`.`c1` and `test`.`t1i`.`a2` = `<subquery9>`.`c2`)))))
|
|
(select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2
|
|
where b2 in (select c2 from t3 where c2 LIKE '%02') or
|
|
b2 in (select c2 from t3 where c2 LIKE '%03')
|
|
group by b1, b2) and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')))
|
|
UNION
|
|
(select * from t1i
|
|
where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
|
|
(a1, a2) in (select c1, c2 from t3i
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
|
|
a1 a2
|
|
1 - 02 2 - 02
|
|
1 - 01 2 - 01
|
|
explain extended
|
|
select * from t1
|
|
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
5 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where `test`.`t1`.`a1` > '0' and <cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1` and <cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2` union /* select#3 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where `test`.`t2`.`b1` < '9' and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1` and <cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (/* select#4 */ select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (/* select#5 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where `test`.`t3`.`c1` = `<subquery5>`.`b1` and `test`.`t3`.`c2` = `<subquery5>`.`b2`)))) ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery4>`.`c1` and `test`.`t1`.`a2` = `<subquery4>`.`c2`))))
|
|
select * from t1
|
|
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
|
|
(a1, a2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
explain extended
|
|
select * from t1, t3
|
|
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
|
|
(c1, c2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
|
|
a1 = c1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
1 PRIMARY t3 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
|
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
5 MATERIALIZED t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2`,`test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t1` join `test`.`t3` where `test`.`t3`.`c1` = `test`.`t1`.`a1` and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select `test`.`t1`.`a1`,`test`.`t1`.`a2` from `test`.`t1` where `test`.`t1`.`a1` > '0' and <cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1` and <cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2` union /* select#3 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where `test`.`t2`.`b1` < '9' and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1` and <cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))) and <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (/* select#4 */ select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`,`test`.`t3`.`c2`>(<in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (/* select#5 */ select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where `test`.`t2i`.`b2` > '0' ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where `test`.`t3`.`c1` = `<subquery5>`.`b1` and `test`.`t3`.`c2` = `<subquery5>`.`b2`)))) ), <primary_index_lookup>(`test`.`t3`.`c1` in <temporary table> on distinct_key where `test`.`t3`.`c1` = `<subquery4>`.`c1` and `test`.`t3`.`c2` = `<subquery4>`.`c2`))))
|
|
select * from t1, t3
|
|
where (a1, a2) in (select * from t1 where a1 > '0' UNION select * from t2 where b1 < '9') and
|
|
(c1, c2) in (select c1, c2 from t3
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')) and
|
|
a1 = c1;
|
|
a1 a2 c1 c2
|
|
1 - 01 2 - 01 1 - 01 2 - 01
|
|
1 - 02 2 - 02 1 - 02 2 - 02
|
|
/******************************************************************************
|
|
* Negative tests, where materialization should not be applied.
|
|
******************************************************************************/
|
|
# UNION in a subquery
|
|
explain extended
|
|
select * from t3
|
|
where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
3 DEPENDENT UNION t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t3` where <expr_cache><`test`.`t3`.`c1`>(<in_optimizer>(`test`.`t3`.`c1`,<exists>(/* select#2 */ select `test`.`t1`.`a1` from `test`.`t1` where `test`.`t1`.`a1` > '0' and <cache>(`test`.`t3`.`c1`) = `test`.`t1`.`a1` union /* select#3 */ select `test`.`t2`.`b1` from `test`.`t2` where `test`.`t2`.`b1` < '9' and <cache>(`test`.`t3`.`c1`) = `test`.`t2`.`b1`)))
|
|
select * from t3
|
|
where c1 in (select a1 from t1 where a1 > '0' UNION select b1 from t2 where b1 < '9');
|
|
c1 c2
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
1 - 03 2 - 03
|
|
explain extended
|
|
select * from t1
|
|
where (a1, a2) in (select b1, b2 from t2
|
|
where b2 in (select c2 from t3 t3a where c1 = a1) or
|
|
b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
|
|
(a1, a2) in (select c1, c2 from t3 t3c
|
|
where (c1, c2) in (select b1, b2 from t2i where b2 > '0' or b2 = a2));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
5 DEPENDENT SUBQUERY t3c ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
6 DEPENDENT SUBQUERY t2i index_subquery it2i1,it2i2,it2i3 it2i3 18 func,func 1 100.00 Using index; Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
|
|
Note 1276 Field or reference 'test.t1.a2' of SELECT #6 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where `test`.`t3a`.`c1` = `test`.`t1`.`a1` and <cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where `test`.`t3b`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`))))) and <cache>(`test`.`t1`.`a1`) = `test`.`t2`.`b1` and <cache>(`test`.`t1`.`a2`) = `test`.`t2`.`b2`))) and <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#5 */ select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where <expr_cache><`test`.`t3c`.`c1`,`test`.`t3c`.`c2`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),<exists>(<index_lookup>(<cache>(`test`.`t3c`.`c1`) in t2i on it2i3 where (`test`.`t2i`.`b2` > '0' or `test`.`t2i`.`b2` = `test`.`t1`.`a2`) and <cache>(`test`.`t3c`.`c1`) = `test`.`t2i`.`b1` and <cache>(`test`.`t3c`.`c2`) = `test`.`t2i`.`b2`)))) and <cache>(`test`.`t1`.`a1`) = `test`.`t3c`.`c1` and <cache>(`test`.`t1`.`a2`) = `test`.`t3c`.`c2`)))
|
|
explain extended
|
|
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select '1 - 01','2 - 01' having (<cache>(`test`.`t1`.`a1`) = '1 - 01' or /*always not null*/ 1 is null) and (<cache>(`test`.`t1`.`a2`) = '2 - 01' or /*always not null*/ 1 is null) and '1 - 01' is null and '2 - 01' is null)))
|
|
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
explain extended
|
|
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><`test`.`t1`.`a1`,`test`.`t1`.`a2`>(<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select '1 - 01','2 - 01' having (<cache>(`test`.`t1`.`a1`) = '1 - 01' or /*always not null*/ 1 is null) and (<cache>(`test`.`t1`.`a2`) = '2 - 01' or /*always not null*/ 1 is null) and '1 - 01' is null and '2 - 01' is null)))
|
|
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01' from dual);
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
/******************************************************************************
|
|
* Subqueries in other uncovered clauses.
|
|
******************************************************************************/
|
|
/* SELECT clause */
|
|
select ((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL from t1;
|
|
((a1,a2) IN (select * from t2 where b2 > '0')) IS NULL
|
|
0
|
|
0
|
|
0
|
|
/* GROUP BY clause */
|
|
create table columns (col int key);
|
|
insert into columns values (1), (2);
|
|
explain extended
|
|
select * from t1 group by (select col from columns limit 1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
|
|
2 SUBQUERY columns index NULL PRIMARY 4 NULL 2 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by (/* select#2 */ select `test`.`columns`.`col` from `test`.`columns` limit 1)
|
|
select * from t1 group by (select col from columns limit 1);
|
|
a1 a2
|
|
1 - 00 2 - 00
|
|
explain extended
|
|
select * from t1 group by (a1 in (select col from columns));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using temporary; Using filesort
|
|
2 DEPENDENT SUBQUERY columns unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using index; Using where; Full scan on NULL key
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by <expr_cache><`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t1`.`a1`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`a1`) in columns on PRIMARY where trigcond(<cache>(`test`.`t1`.`a1`) = `test`.`columns`.`col`)))))
|
|
select * from t1 group by (a1 in (select col from columns));
|
|
a1 a2
|
|
1 - 00 2 - 00
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect DECIMAL value: '1 - 00'
|
|
Warning 1292 Truncated incorrect DECIMAL value: '1 - 01'
|
|
Warning 1292 Truncated incorrect DECIMAL value: '1 - 02'
|
|
/* ORDER BY clause */
|
|
explain extended
|
|
select * from t1 order by (select col from columns limit 1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
|
|
2 SUBQUERY columns index NULL PRIMARY 4 NULL 2 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` order by (/* select#2 */ select `test`.`columns`.`col` from `test`.`columns` limit 1)
|
|
select * from t1 order by (select col from columns limit 1);
|
|
a1 a2
|
|
1 - 00 2 - 00
|
|
1 - 01 2 - 01
|
|
1 - 02 2 - 02
|
|
/******************************************************************************
|
|
* Column types/sizes that affect materialization.
|
|
******************************************************************************/
|
|
/*
|
|
Test that BLOBs are not materialized (except when arguments of some functions).
|
|
*/
|
|
# force materialization to be always considered
|
|
set @prefix_len = 6;
|
|
set @blob_len = 16;
|
|
set @suffix_len = @blob_len - @prefix_len;
|
|
create table t1_16 (a1 blob(16), a2 blob(16));
|
|
create table t2_16 (b1 blob(16), b2 blob(16));
|
|
create table t3_16 (c1 blob(16), c2 blob(16));
|
|
insert into t1_16 values
|
|
(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
|
|
insert into t1_16 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t1_16 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_16 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t2_16 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_16 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_16 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t3_16 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t3_16 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_16 values
|
|
(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select b1 from t2_16 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,<exists>(/* select#2 */ select `test`.`t2_16`.`b1` from `test`.`t2_16` where `test`.`t2_16`.`b1` > '0' and <cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select b1 from t2_16 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`>(<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(/* select#2 */ select `test`.`t2_16`.`b1`,`test`.`t2_16`.`b2` from `test`.`t2_16` where `test`.`t2_16`.`b1` > '0' and <cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1` and <cache>(`test`.`t1_16`.`a2`) = `test`.`t2_16`.`b2`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where (a1,a2) in (select b1, b2 from t2_16 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (/* select#2 */ select substr(`test`.`t2_16`.`b1`,1,16) from `test`.`t2_16` where `test`.`t2_16`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where `test`.`t1_16`.`a1` = `<subquery2>`.`substring(b1,1,16)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select substring(b1,1,16) from t2_16 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select group_concat(b1) from t2_16 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,<exists>(/* select#2 */ select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` having <cache>(`test`.`t1_16`.`a1`) = <ref_null_helper>(group_concat(`test`.`t2_16`.`b1` separator ',')))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select group_concat(b1) from t2_16 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
set @@group_concat_max_len = 256;
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select group_concat(b1) from t2_16 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_16`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_16`.`a2`,7) AS `left(a2,7)` from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`>(<in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (/* select#2 */ select group_concat(`test`.`t2_16`.`b1` separator ',') from `test`.`t2_16` group by `test`.`t2_16`.`b2` ), <primary_index_lookup>(`test`.`t1_16`.`a1` in <temporary table> on distinct_key where `test`.`t1_16`.`a1` = `<subquery2>`.`group_concat(b1)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_16
|
|
where a1 in (select group_concat(b1) from t2_16 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended
|
|
select * from t1
|
|
where concat(a1,'x') IN
|
|
(select left(a1,8) from t1_16
|
|
where (a1, a2) IN
|
|
(select t2_16.b1, t2_16.b2 from t2_16, t2
|
|
where t2.b2 = substring(t2_16.b2,1,6) and
|
|
t2.b1 IN (select c1 from t3 where c2 > '0')));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t1_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
3 DEPENDENT SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
|
|
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <expr_cache><concat(`test`.`t1`.`a1`,'x')>(<in_optimizer>(concat(`test`.`t1`.`a1`,'x'),<exists>(/* select#2 */ select left(`test`.`t1_16`.`a1`,8) from `test`.`t1_16` where <expr_cache><`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`>(<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(/* select#3 */ select `test`.`t2_16`.`b1`,`test`.`t2_16`.`b2` from `test`.`t2_16` join `test`.`t2` where `test`.`t2`.`b2` = substr(`test`.`t2_16`.`b2`,1,6) and <expr_cache><`test`.`t2`.`b1`>(<in_optimizer>(`test`.`t2`.`b1`,`test`.`t2`.`b1` in ( <materialize> (/* select#4 */ select `test`.`t3`.`c1` from `test`.`t3` where `test`.`t3`.`c2` > '0' ), <primary_index_lookup>(`test`.`t2`.`b1` in <temporary table> on distinct_key where `test`.`t2`.`b1` = `<subquery4>`.`c1`)))) and <cache>(`test`.`t1_16`.`a1`) = `test`.`t2_16`.`b1` and <cache>(`test`.`t1_16`.`a2`) = `test`.`t2_16`.`b2`))) and <cache>(concat(`test`.`t1`.`a1`,'x')) = left(`test`.`t1_16`.`a1`,8))))
|
|
drop table t1_16, t2_16, t3_16;
|
|
set @blob_len = 512;
|
|
set @suffix_len = @blob_len - @prefix_len;
|
|
create table t1_512 (a1 blob(512), a2 blob(512));
|
|
create table t2_512 (b1 blob(512), b2 blob(512));
|
|
create table t3_512 (c1 blob(512), c2 blob(512));
|
|
insert into t1_512 values
|
|
(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
|
|
insert into t1_512 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t1_512 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_512 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t2_512 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_512 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_512 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t3_512 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t3_512 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_512 values
|
|
(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select b1 from t2_512 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,<exists>(/* select#2 */ select `test`.`t2_512`.`b1` from `test`.`t2_512` where `test`.`t2_512`.`b1` > '0' and <cache>(`test`.`t1_512`.`a1`) = `test`.`t2_512`.`b1`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select b1 from t2_512 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`,`test`.`t1_512`.`a2`>(<in_optimizer>((`test`.`t1_512`.`a1`,`test`.`t1_512`.`a2`),<exists>(/* select#2 */ select `test`.`t2_512`.`b1`,`test`.`t2_512`.`b2` from `test`.`t2_512` where `test`.`t2_512`.`b1` > '0' and <cache>(`test`.`t1_512`.`a1`) = `test`.`t2_512`.`b1` and <cache>(`test`.`t1_512`.`a2`) = `test`.`t2_512`.`b2`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where (a1,a2) in (select b1, b2 from t2_512 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (/* select#2 */ select substr(`test`.`t2_512`.`b1`,1,512) from `test`.`t2_512` where `test`.`t2_512`.`b1` > '0' ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where `test`.`t1_512`.`a1` = `<subquery2>`.`substring(b1,1,512)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select substring(b1,1,512) from t2_512 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select group_concat(b1) from t2_512 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (/* select#2 */ select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where `test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select group_concat(b1) from t2_512 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by group_concat()
|
|
Warning 1260 Row 2 was cut by group_concat()
|
|
Warning 1260 Row 3 was cut by group_concat()
|
|
set @@group_concat_max_len = 256;
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select group_concat(b1) from t2_512 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_512`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_512`.`a2`,7) AS `left(a2,7)` from `test`.`t1_512` where <expr_cache><`test`.`t1_512`.`a1`>(<in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (/* select#2 */ select group_concat(`test`.`t2_512`.`b1` separator ',') from `test`.`t2_512` group by `test`.`t2_512`.`b2` ), <primary_index_lookup>(`test`.`t1_512`.`a1` in <temporary table> on distinct_key where `test`.`t1_512`.`a1` = `<subquery2>`.`group_concat(b1)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_512
|
|
where a1 in (select group_concat(b1) from t2_512 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by group_concat()
|
|
Warning 1260 Row 2 was cut by group_concat()
|
|
Warning 1260 Row 3 was cut by group_concat()
|
|
drop table t1_512, t2_512, t3_512;
|
|
set @blob_len = 1024;
|
|
set @suffix_len = @blob_len - @prefix_len;
|
|
create table t1_1024 (a1 blob(1024), a2 blob(1024));
|
|
create table t2_1024 (b1 blob(1024), b2 blob(1024));
|
|
create table t3_1024 (c1 blob(1024), c2 blob(1024));
|
|
insert into t1_1024 values
|
|
(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
|
|
insert into t1_1024 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t1_1024 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_1024 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t2_1024 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_1024 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_1024 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t3_1024 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t3_1024 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_1024 values
|
|
(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select b1 from t2_1024 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,<exists>(/* select#2 */ select `test`.`t2_1024`.`b1` from `test`.`t2_1024` where `test`.`t2_1024`.`b1` > '0' and <cache>(`test`.`t1_1024`.`a1`) = `test`.`t2_1024`.`b1`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select b1 from t2_1024 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a2`>(<in_optimizer>((`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a2`),<exists>(/* select#2 */ select `test`.`t2_1024`.`b1`,`test`.`t2_1024`.`b2` from `test`.`t2_1024` where `test`.`t2_1024`.`b1` > '0' and <cache>(`test`.`t1_1024`.`a1`) = `test`.`t2_1024`.`b1` and <cache>(`test`.`t1_1024`.`a2`) = `test`.`t2_1024`.`b2`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where (a1,a2) in (select b1, b2 from t2_1024 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,<exists>(/* select#2 */ select substr(`test`.`t2_1024`.`b1`,1,1024) from `test`.`t2_1024` where `test`.`t2_1024`.`b1` > '0' and <cache>(`test`.`t1_1024`.`a1`) = substr(`test`.`t2_1024`.`b1`,1,1024))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select substring(b1,1,1024) from t2_1024 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select group_concat(b1) from t2_1024 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (/* select#2 */ select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where `test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select group_concat(b1) from t2_1024 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by group_concat()
|
|
Warning 1260 Row 2 was cut by group_concat()
|
|
Warning 1260 Row 3 was cut by group_concat()
|
|
set @@group_concat_max_len = 256;
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select group_concat(b1) from t2_1024 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1024`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1024`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1024` where <expr_cache><`test`.`t1_1024`.`a1`>(<in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (/* select#2 */ select group_concat(`test`.`t2_1024`.`b1` separator ',') from `test`.`t2_1024` group by `test`.`t2_1024`.`b2` ), <primary_index_lookup>(`test`.`t1_1024`.`a1` in <temporary table> on distinct_key where `test`.`t1_1024`.`a1` = `<subquery2>`.`group_concat(b1)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1024
|
|
where a1 in (select group_concat(b1) from t2_1024 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by group_concat()
|
|
Warning 1260 Row 2 was cut by group_concat()
|
|
Warning 1260 Row 3 was cut by group_concat()
|
|
drop table t1_1024, t2_1024, t3_1024;
|
|
set @blob_len = 1025;
|
|
set @suffix_len = @blob_len - @prefix_len;
|
|
create table t1_1025 (a1 blob(1025), a2 blob(1025));
|
|
create table t2_1025 (b1 blob(1025), b2 blob(1025));
|
|
create table t3_1025 (c1 blob(1025), c2 blob(1025));
|
|
insert into t1_1025 values
|
|
(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
|
|
insert into t1_1025 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t1_1025 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_1025 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t2_1025 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_1025 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_1025 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t3_1025 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t3_1025 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
insert into t3_1025 values
|
|
(concat('1 - 04', repeat('x', @suffix_len)), concat('2 - 04', repeat('x', @suffix_len)));
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select b1 from t2_1025 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,<exists>(/* select#2 */ select `test`.`t2_1025`.`b1` from `test`.`t2_1025` where `test`.`t2_1025`.`b1` > '0' and <cache>(`test`.`t1_1025`.`a1`) = `test`.`t2_1025`.`b1`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select b1 from t2_1025 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a2`>(<in_optimizer>((`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a2`),<exists>(/* select#2 */ select `test`.`t2_1025`.`b1`,`test`.`t2_1025`.`b2` from `test`.`t2_1025` where `test`.`t2_1025`.`b1` > '0' and <cache>(`test`.`t1_1025`.`a1`) = `test`.`t2_1025`.`b1` and <cache>(`test`.`t1_1025`.`a2`) = `test`.`t2_1025`.`b2`)))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where (a1,a2) in (select b1, b2 from t2_1025 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,<exists>(/* select#2 */ select substr(`test`.`t2_1025`.`b1`,1,1025) from `test`.`t2_1025` where `test`.`t2_1025`.`b1` > '0' and <cache>(`test`.`t1_1025`.`a1`) = substr(`test`.`t2_1025`.`b1`,1,1025))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select substring(b1,1,1025) from t2_1025 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
1 - 02x 2 - 02x
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select group_concat(b1) from t2_1025 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (/* select#2 */ select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where `test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select group_concat(b1) from t2_1025 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by group_concat()
|
|
Warning 1260 Row 2 was cut by group_concat()
|
|
Warning 1260 Row 3 was cut by group_concat()
|
|
set @@group_concat_max_len = 256;
|
|
explain extended select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select group_concat(b1) from t2_1025 group by b2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1_1025 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select left(`test`.`t1_1025`.`a1`,7) AS `left(a1,7)`,left(`test`.`t1_1025`.`a2`,7) AS `left(a2,7)` from `test`.`t1_1025` where <expr_cache><`test`.`t1_1025`.`a1`>(<in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (/* select#2 */ select group_concat(`test`.`t2_1025`.`b1` separator ',') from `test`.`t2_1025` group by `test`.`t2_1025`.`b2` ), <primary_index_lookup>(`test`.`t1_1025`.`a1` in <temporary table> on distinct_key where `test`.`t1_1025`.`a1` = `<subquery2>`.`group_concat(b1)`))))
|
|
select left(a1,7), left(a2,7)
|
|
from t1_1025
|
|
where a1 in (select group_concat(b1) from t2_1025 group by b2);
|
|
left(a1,7) left(a2,7)
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by group_concat()
|
|
Warning 1260 Row 2 was cut by group_concat()
|
|
Warning 1260 Row 3 was cut by group_concat()
|
|
drop table t1_1025, t2_1025, t3_1025;
|
|
create table t1bit (a1 bit(3), a2 bit(3));
|
|
create table t2bit (b1 bit(3), b2 bit(3));
|
|
insert into t1bit values (b'000', b'100');
|
|
insert into t1bit values (b'001', b'101');
|
|
insert into t1bit values (b'010', b'110');
|
|
insert into t2bit values (b'001', b'101');
|
|
insert into t2bit values (b'010', b'110');
|
|
insert into t2bit values (b'110', b'111');
|
|
explain extended select bin(a1), bin(a2)
|
|
from t1bit
|
|
where (a1, a2) in (select b1, b2 from t2bit);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1bit ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 MATERIALIZED t2bit ALL NULL NULL NULL NULL 3 100.00
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` where <expr_cache><`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`>(<in_optimizer>((`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`),(`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`) in ( <materialize> (/* select#2 */ select `test`.`t2bit`.`b1`,`test`.`t2bit`.`b2` from `test`.`t2bit` ), <primary_index_lookup>(`test`.`t1bit`.`a1` in <temporary table> on distinct_key where `test`.`t1bit`.`a1` = `<subquery2>`.`b1` and `test`.`t1bit`.`a2` = `<subquery2>`.`b2`))))
|
|
select bin(a1), bin(a2)
|
|
from t1bit
|
|
where (a1, a2) in (select b1, b2 from t2bit);
|
|
bin(a1) bin(a2)
|
|
1 101
|
|
10 110
|
|
drop table t1bit, t2bit;
|
|
create table t1bb (a1 bit(3), a2 blob(3));
|
|
create table t2bb (b1 bit(3), b2 blob(3));
|
|
insert into t1bb values (b'000', '100');
|
|
insert into t1bb values (b'001', '101');
|
|
insert into t1bb values (b'010', '110');
|
|
insert into t2bb values (b'001', '101');
|
|
insert into t2bb values (b'010', '110');
|
|
insert into t2bb values (b'110', '111');
|
|
explain extended select bin(a1), a2
|
|
from t1bb
|
|
where (a1, a2) in (select b1, b2 from t2bb);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1bb ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t2bb ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select conv(`test`.`t1bb`.`a1`,10,2) AS `bin(a1)`,`test`.`t1bb`.`a2` AS `a2` from `test`.`t1bb` where <expr_cache><`test`.`t1bb`.`a1`,`test`.`t1bb`.`a2`>(<in_optimizer>((`test`.`t1bb`.`a1`,`test`.`t1bb`.`a2`),<exists>(/* select#2 */ select `test`.`t2bb`.`b1`,`test`.`t2bb`.`b2` from `test`.`t2bb` where <cache>(`test`.`t1bb`.`a1`) = `test`.`t2bb`.`b1` and <cache>(`test`.`t1bb`.`a2`) = `test`.`t2bb`.`b2`)))
|
|
select bin(a1), a2
|
|
from t1bb
|
|
where (a1, a2) in (select b1, b2 from t2bb);
|
|
bin(a1) a2
|
|
1 101
|
|
10 110
|
|
drop table t1bb, t2bb;
|
|
drop table t1, t2, t3, t1i, t2i, t3i, columns;
|
|
/******************************************************************************
|
|
* Test the cache of the left operand of IN.
|
|
******************************************************************************/
|
|
# Test that default values of Cached_item are not used for comparison
|
|
create table t1 (s1 int);
|
|
create table t2 (s2 int);
|
|
insert into t1 values (5),(1),(0);
|
|
insert into t2 values (0), (1);
|
|
select s2 from t2 where s2 in (select s1 from t1);
|
|
s2
|
|
0
|
|
1
|
|
drop table t1, t2;
|
|
create table t1 (a int not null, b int not null);
|
|
create table t2 (c int not null, d int not null);
|
|
create table t3 (e int not null);
|
|
insert into t1 values (1,10);
|
|
insert into t1 values (1,20);
|
|
insert into t1 values (2,10);
|
|
insert into t1 values (2,20);
|
|
insert into t1 values (2,30);
|
|
insert into t1 values (3,20);
|
|
insert into t1 values (4,40);
|
|
insert into t2 values (2,10);
|
|
insert into t2 values (2,20);
|
|
insert into t2 values (2,40);
|
|
insert into t2 values (3,20);
|
|
insert into t2 values (4,10);
|
|
insert into t2 values (5,10);
|
|
insert into t3 values (10);
|
|
insert into t3 values (10);
|
|
insert into t3 values (20);
|
|
insert into t3 values (30);
|
|
explain extended
|
|
select a from t1 where a in (select c from t2 where d >= 20);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`c` from `test`.`t2` where `test`.`t2`.`d` >= 20 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`c`))))
|
|
select a from t1 where a in (select c from t2 where d >= 20);
|
|
a
|
|
2
|
|
2
|
|
2
|
|
3
|
|
create index it1a on t1(a);
|
|
explain extended
|
|
select a from t1 where a in (select c from t2 where d >= 20);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using where; Using index
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`c` from `test`.`t2` where `test`.`t2`.`d` >= 20 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`c`))))
|
|
select a from t1 where a in (select c from t2 where d >= 20);
|
|
a
|
|
2
|
|
2
|
|
2
|
|
3
|
|
insert into t2 values (1,10);
|
|
explain extended
|
|
select a from t1 where a in (select c from t2 where d >= 20);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 index NULL it1a 4 NULL 7 100.00 Using where; Using index
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`c` from `test`.`t2` where `test`.`t2`.`d` >= 20 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`c`))))
|
|
select a from t1 where a in (select c from t2 where d >= 20);
|
|
a
|
|
2
|
|
2
|
|
2
|
|
3
|
|
explain extended
|
|
select a from t1 group by a having a in (select c from t2 where d >= 20);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 range NULL it1a 4 NULL 7 100.00 Using index for group-by
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`c` from `test`.`t2` where `test`.`t2`.`d` >= 20 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`c`))))
|
|
select a from t1 group by a having a in (select c from t2 where d >= 20);
|
|
a
|
|
2
|
|
3
|
|
create index iab on t1(a, b);
|
|
explain extended
|
|
select a from t1 group by a having a in (select c from t2 where d >= 20);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 range NULL it1a 4 NULL 7 100.00 Using index for group-by
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`c` from `test`.`t2` where `test`.`t2`.`d` >= 20 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`c`))))
|
|
select a from t1 group by a having a in (select c from t2 where d >= 20);
|
|
a
|
|
2
|
|
3
|
|
explain extended
|
|
select a from t1 group by a
|
|
having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 range NULL iab 4 NULL 7 100.00 Using index for group-by
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
|
|
Note 1981 Aggregate function 'max()' of SELECT #3 belongs to SELECT #1
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <expr_cache><`test`.`t1`.`a`,`test`.`t1`.`b`,max(`test`.`t1`.`b`),max(`test`.`t1`.`b`)>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`c` from `test`.`t2` where <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`,max(`test`.`t1`.`b`),max(`test`.`t1`.`b`)>(<in_optimizer>(`test`.`t2`.`d`,<exists>(/* select#3 */ select `test`.`t3`.`e` from `test`.`t3` where max(`test`.`t1`.`b`) = `test`.`t3`.`e` having <cache>(`test`.`t2`.`d`) >= <ref_null_helper>(`test`.`t3`.`e`))))) and <cache>(`test`.`t1`.`a`) = `test`.`t2`.`c`)))
|
|
select a from t1 group by a
|
|
having a in (select c from t2 where d >= some(select e from t3 where max(b)=e));
|
|
a
|
|
2
|
|
3
|
|
explain extended
|
|
select a from t1
|
|
where a in (select c from t2 where d >= some(select e from t3 where b=e));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 index NULL iab 8 NULL 7 100.00 Using where; Using index
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `test`.`t2`.`c` from `test`.`t2` where <nop>(<expr_cache><`test`.`t2`.`d`,`test`.`t1`.`b`>(<in_optimizer>(`test`.`t2`.`d`,<exists>(/* select#3 */ select `test`.`t3`.`e` from `test`.`t3` where `test`.`t1`.`b` = `test`.`t3`.`e` and <cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`)))) and <cache>(`test`.`t1`.`a`) = `test`.`t2`.`c`)))
|
|
select a from t1
|
|
where a in (select c from t2 where d >= some(select e from t3 where b=e));
|
|
a
|
|
1
|
|
2
|
|
2
|
|
2
|
|
3
|
|
drop table t1, t2, t3;
|
|
create table t2 (a int, b int, key(a), key(b));
|
|
insert into t2 values (3,3),(3,3),(3,3);
|
|
select 1 from t2 where
|
|
t2.a > 1
|
|
or
|
|
t2.a = 3 and not t2.a not in (select t2.b from t2);
|
|
1
|
|
1
|
|
1
|
|
1
|
|
drop table t2;
|
|
create table t1 (a1 int key);
|
|
create table t2 (b1 int);
|
|
insert into t1 values (5);
|
|
explain select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);
|
|
min(a1)
|
|
NULL
|
|
set @local_optimizer_switch=@@optimizer_switch;
|
|
set @@optimizer_switch=@optimizer_switch_local_default;
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on';
|
|
explain select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
select min(a1) from t1 where 7 in (select max(b1) from t2 group by b1);
|
|
min(a1)
|
|
NULL
|
|
set @@optimizer_switch=@optimizer_switch_local_default;
|
|
set @@optimizer_switch='semijoin=off';
|
|
explain select min(a1) from t1 where 7 in (select b1 from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
select min(a1) from t1 where 7 in (select b1 from t2);
|
|
min(a1)
|
|
NULL
|
|
set @@optimizer_switch=@optimizer_switch_local_default;
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on';
|
|
# with MariaDB and MWL#90, this particular case is solved:
|
|
explain select min(a1) from t1 where 7 in (select b1 from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
select min(a1) from t1 where 7 in (select b1 from t2);
|
|
min(a1)
|
|
NULL
|
|
# but when we go around MWL#90 code, the problem still shows up:
|
|
explain select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
|
|
min(a1)
|
|
NULL
|
|
set @@optimizer_switch= @local_optimizer_switch;
|
|
drop table t1,t2;
|
|
create table t1 (a char(2), b varchar(10)) charset=latin1;
|
|
insert into t1 values ('a', 'aaa');
|
|
insert into t1 values ('aa', 'aaaa');
|
|
explain select a,b from t1 where b in (select a from t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
|
|
select a,b from t1 where b in (select a from t1);
|
|
a b
|
|
prepare st1 from "select a,b from t1 where b in (select a from t1)";
|
|
execute st1;
|
|
a b
|
|
execute st1;
|
|
a b
|
|
drop table t1;
|
|
#
|
|
# BUG#49630: Segfault in select_describe() with double
|
|
# nested subquery and materialization
|
|
#
|
|
CREATE TABLE t1 (t1i int);
|
|
CREATE TABLE t2 (t2i int);
|
|
CREATE TABLE t3 (t3i int);
|
|
CREATE TABLE t4 (t4i int);
|
|
INSERT INTO t1 VALUES (1);
|
|
INSERT INTO t2 VALUES (1),(2);
|
|
INSERT INTO t3 VALUES (1),(2);
|
|
INSERT INTO t4 VALUES (1),(2);
|
|
|
|
EXPLAIN
|
|
SELECT t1i
|
|
FROM t1 JOIN t4 ON t1i=t4i
|
|
WHERE (t1i) IN (
|
|
SELECT t2i
|
|
FROM t2
|
|
WHERE (t2i) IN (
|
|
SELECT max(t3i)
|
|
FROM t3
|
|
GROUP BY t3i
|
|
)
|
|
);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t4 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
|
|
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 2 Using temporary
|
|
DROP TABLE t1,t2,t3,t4;
|
|
CREATE TABLE t1 (
|
|
pk INTEGER AUTO_INCREMENT,
|
|
col_int_nokey INTEGER,
|
|
col_int_key INTEGER,
|
|
col_varchar_key VARCHAR(1),
|
|
PRIMARY KEY (pk),
|
|
KEY (col_int_key),
|
|
KEY (col_varchar_key, col_int_key)
|
|
)
|
|
;
|
|
INSERT INTO t1 (
|
|
col_int_key, col_int_nokey, col_varchar_key
|
|
)
|
|
VALUES
|
|
(2, NULL, 'w'),
|
|
(9, 7, 'm'),
|
|
(3, 9, 'm'),
|
|
(9, 7, 'k'),
|
|
(NULL, 4, 'r'),
|
|
(9, 2, 't'),
|
|
(3, 6, 'j'),
|
|
(8, 8, 'u'),
|
|
(8, NULL, 'h'),
|
|
(53, 5, 'o'),
|
|
(0, NULL, NULL),
|
|
(5, 6, 'k'),
|
|
(166, 188, 'e'),
|
|
(3, 2, 'n'),
|
|
(0, 1, 't'),
|
|
(1, 1, 'c'),
|
|
(9, 0, 'm'),
|
|
(5, 9, 'y'),
|
|
(6, NULL, 'f'),
|
|
(2, 4, 'd')
|
|
;
|
|
SELECT table2.col_varchar_key AS field1,
|
|
table2.col_int_nokey AS field2
|
|
FROM ( t1 AS table1 LEFT OUTER JOIN t1 AS table2
|
|
ON (table2.col_varchar_key = table1.col_varchar_key ) )
|
|
WHERE table1.pk = 6
|
|
HAVING ( field2 ) IN
|
|
( SELECT SUBQUERY2_t2.col_int_nokey AS SUBQUERY2_field2
|
|
FROM ( t1 AS SUBQUERY2_t1 JOIN t1 AS SUBQUERY2_t2
|
|
ON (SUBQUERY2_t2.col_varchar_key = SUBQUERY2_t1.col_varchar_key ) ) )
|
|
ORDER BY field2
|
|
;
|
|
field1 field2
|
|
t 1
|
|
t 2
|
|
drop table t1;
|
|
#
|
|
# BUG#53103: MTR test ps crashes in optimize_cond()
|
|
# when running with --debug
|
|
#
|
|
CREATE TABLE t1(track varchar(15));
|
|
INSERT INTO t1 VALUES ('CAD'), ('CAD');
|
|
PREPARE STMT FROM
|
|
"SELECT 1 FROM t1
|
|
WHERE
|
|
track IN (SELECT track FROM t1
|
|
GROUP BY track
|
|
HAVING track>='CAD')";
|
|
EXECUTE STMT ;
|
|
1
|
|
1
|
|
1
|
|
EXECUTE STMT ;
|
|
1
|
|
1
|
|
1
|
|
DEALLOCATE PREPARE STMT;
|
|
DROP TABLE t1;
|
|
# End of BUG#53103
|
|
#
|
|
# BUG#54511 - Assertion failed: cache != 0L in file
|
|
# sql_select.cc::sub_select_cache on HAVING
|
|
#
|
|
CREATE TABLE t1 (i int(11));
|
|
CREATE TABLE t2 (c char(1));
|
|
CREATE TABLE t3 (c char(1));
|
|
INSERT INTO t1 VALUES (1), (2);
|
|
INSERT INTO t2 VALUES ('a'), ('b');
|
|
INSERT INTO t3 VALUES ('x'), ('y');
|
|
SELECT COUNT( i ),i
|
|
FROM t1
|
|
HAVING ('c')
|
|
IN (SELECT t2.c FROM (t2 JOIN t3));
|
|
COUNT( i ) i
|
|
DROP TABLE t1,t2,t3;
|
|
# End BUG#54511
|
|
#
|
|
# BUG#56367 - Assertion exec_method != EXEC_MATERIALIZATION...
|
|
# on subquery in FROM
|
|
#
|
|
CREATE TABLE t1 (a INTEGER);
|
|
CREATE TABLE t2 (b INTEGER);
|
|
INSERT INTO t2 VALUES (1);
|
|
set @tmp_optimizer_switch=@@optimizer_switch;
|
|
set optimizer_switch='derived_merge=off,derived_with_keys=off';
|
|
explain SELECT a FROM (
|
|
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
|
|
) table1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
3 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT a FROM (
|
|
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
|
|
) table1;
|
|
a
|
|
set optimizer_switch=@tmp_optimizer_switch;
|
|
DROP TABLE t1, t2;
|
|
# End BUG#56367
|
|
#
|
|
# Bug#59833 - materialization=on/off leads to different result set
|
|
# when using IN
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk int NOT NULL,
|
|
f1 int DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
) ENGINE=MyISAM;
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
f1 int DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (10,0);
|
|
INSERT INTO t2 VALUES (10,0),(11,0);
|
|
explain SELECT * FROM t1 JOIN t2 USING (f1)
|
|
WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t1 system NULL NULL NULL NULL 1
|
|
SELECT * FROM t1 JOIN t2 USING (f1)
|
|
WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);
|
|
f1 pk pk
|
|
DROP TABLE t1, t2;
|
|
# End Bug#59833
|
|
#
|
|
# Bug#11852644 - CRASH IN ITEM_REF::SAVE_IN_FIELD ON SELECT DISTINCT
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
KEY col_varchar_key (col_varchar_key))
|
|
;
|
|
INSERT INTO t1 VALUES
|
|
('v','v'),('r','r');
|
|
CREATE TABLE t2 (
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
KEY col_varchar_key(col_varchar_key))
|
|
;
|
|
INSERT INTO t2 VALUES
|
|
('r','r'),('c','c');
|
|
CREATE VIEW v3 AS SELECT * FROM t2;
|
|
SELECT DISTINCT alias2.col_varchar_key
|
|
FROM t1 AS alias1 JOIN v3 AS alias2
|
|
ON alias2.col_varchar_key = alias1.col_varchar_key
|
|
HAVING col_varchar_key IN (SELECT col_varchar_nokey FROM t2)
|
|
;
|
|
col_varchar_key
|
|
r
|
|
DROP TABLE t1, t2;
|
|
DROP VIEW v3;
|
|
# End Bug#11852644
|
|
|
|
# Bug#12668294 - GROUP BY ON EMPTY RESULT GIVES EMPTY ROW
|
|
# INSTEAD OF NULL WHEN MATERIALIZATION ON
|
|
|
|
CREATE TABLE t1 (col_int_nokey INT) ENGINE=MEMORY;
|
|
CREATE TABLE t2 (col_int_nokey INT) ENGINE=MEMORY;
|
|
INSERT INTO t2 VALUES (8),(7);
|
|
CREATE TABLE t3 (col_int_nokey INT) ENGINE=MEMORY;
|
|
INSERT INTO t3 VALUES (7);
|
|
SELECT MIN(t3.col_int_nokey),t1.col_int_nokey AS field3
|
|
FROM t3
|
|
LEFT JOIN t1
|
|
ON t1.col_int_nokey
|
|
WHERE (194, 200) IN (
|
|
SELECT SQ4_alias1.col_int_nokey,
|
|
SQ4_alias2.col_int_nokey
|
|
FROM t2 AS SQ4_alias1
|
|
JOIN
|
|
t2 AS SQ4_alias2
|
|
ON SQ4_alias2.col_int_nokey = 5
|
|
)
|
|
GROUP BY field3 ;
|
|
MIN(t3.col_int_nokey) field3
|
|
DROP TABLE t1;
|
|
DROP TABLE t2;
|
|
DROP TABLE t3;
|
|
CREATE TABLE t1 (f1 INT, f2 DECIMAL(5,3)) ENGINE=MyISAM;
|
|
INSERT INTO t1 (f1, f2) VALUES (1, 1.789);
|
|
INSERT INTO t1 (f1, f2) VALUES (13, 1.454);
|
|
INSERT INTO t1 (f1, f2) VALUES (10, 1.668);
|
|
CREATE TABLE t2 LIKE t1;
|
|
INSERT INTO t2 VALUES (1, 1.789);
|
|
INSERT INTO t2 VALUES (13, 1.454);
|
|
set @local_optimizer_switch=@@optimizer_switch;
|
|
set @@optimizer_switch=@optimizer_switch_local_default;
|
|
SET @@optimizer_switch='semijoin=on,materialization=on';
|
|
EXPLAIN SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
|
|
SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
|
|
COUNT(*)
|
|
2
|
|
set @@optimizer_switch= @local_optimizer_switch;
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# BUG#46548 IN-subqueries return 0 rows with materialization=on
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk int,
|
|
a varchar(1),
|
|
b varchar(4),
|
|
c varchar(4),
|
|
d varchar(4),
|
|
PRIMARY KEY (pk)
|
|
) CHARSET=latin1;
|
|
INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff');
|
|
insert into t1 select seq,'x','xxxx','xxxx','xxxx' from seq_10_to_40;
|
|
CREATE TABLE t2 LIKE t1;
|
|
INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff');
|
|
insert into t2 select -seq,'a','aaaa','aaaa','aaaa' from seq_1_to_20;
|
|
insert into t2 select seq,'b','bbbb','bbbb','bbbb' from seq_100_to_200;
|
|
set @local_optimizer_switch=@@optimizer_switch;
|
|
set @@optimizer_switch=@optimizer_switch_local_default;
|
|
SET @@optimizer_switch='semijoin=on,materialization=on';
|
|
EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 33
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
|
|
2 MATERIALIZED t2 ALL PRIMARY NULL NULL NULL 123 Using where
|
|
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
|
|
pk
|
|
2
|
|
SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
|
|
pk
|
|
2
|
|
DROP TABLE t1, t2;
|
|
set optimizer_switch=@local_optimizer_switch;
|
|
#
|
|
# BUG#50019: Wrong result for IN-subquery with materialization
|
|
#
|
|
create table t1(i int);
|
|
insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
|
|
create table t2(i int);
|
|
insert into t2 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
|
|
create table t3(i int);
|
|
insert into t3 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
|
|
select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
|
|
i
|
|
1
|
|
2
|
|
3
|
|
4
|
|
set @local_optimizer_switch=@@optimizer_switch;
|
|
set session optimizer_switch='materialization=off,in_to_exists=on';
|
|
select * from t1 where t1.i in (select t2.i from t2 join t3 where t2.i + t3.i = 5);
|
|
i
|
|
1
|
|
2
|
|
3
|
|
4
|
|
set session optimizer_switch=@local_optimizer_switch;
|
|
drop table t1, t2, t3;
|
|
create table t0 (a int);
|
|
insert into t0 values (0),(1),(2);
|
|
create table t1 (a int);
|
|
insert into t1 values (0),(1),(2);
|
|
explain select a, a in (select a from t1) from t0;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t0 ALL NULL NULL NULL NULL 3
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
|
|
select a, a in (select a from t1) from t0;
|
|
a a in (select a from t1)
|
|
0 1
|
|
1 1
|
|
2 1
|
|
prepare s from 'select a, a in (select a from t1) from t0';
|
|
execute s;
|
|
a a in (select a from t1)
|
|
0 1
|
|
1 1
|
|
2 1
|
|
update t1 set a=123;
|
|
execute s;
|
|
a a in (select a from t1)
|
|
0 0
|
|
1 0
|
|
2 0
|
|
drop table t0, t1;
|
|
set optimizer_switch='firstmatch=on';
|
|
#
|
|
# MWL#90, review feedback: check what happens when the subquery
|
|
# looks like candidate for MWL#90 checking at the first glance
|
|
# but then subselect_hash_sj_engine::init_permanent() discovers
|
|
# that it's not possible to perform duplicate removal for the
|
|
# selected datatypes, and so materialization isn't applicable after
|
|
# all.
|
|
#
|
|
set @blob_len = 1024;
|
|
set @suffix_len = @blob_len - @prefix_len;
|
|
create table t1_1024 (a1 blob(1024), a2 blob(1024));
|
|
create table t2_1024 (b1 blob(1024), b2 blob(1024));
|
|
insert into t1_1024 values
|
|
(concat('1 - 00', repeat('x', @suffix_len)), concat('2 - 00', repeat('x', @suffix_len)));
|
|
insert into t1_1024 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t1_1024 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_1024 values
|
|
(concat('1 - 01', repeat('x', @suffix_len)), concat('2 - 01', repeat('x', @suffix_len)));
|
|
insert into t2_1024 values
|
|
(concat('1 - 02', repeat('x', @suffix_len)), concat('2 - 02', repeat('x', @suffix_len)));
|
|
insert into t2_1024 values
|
|
(concat('1 - 03', repeat('x', @suffix_len)), concat('2 - 03', repeat('x', @suffix_len)));
|
|
explain select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1_1024 ALL NULL NULL NULL NULL 3 Using where
|
|
2 DEPENDENT SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 Using where
|
|
select left(a1,7), left(a2,7) from t1_1024 where (a1,3) in (select substring(b1,1,1024), count(*) from t2_1024 where b1 > '0');
|
|
left(a1,7) left(a2,7)
|
|
1 - 01x 2 - 01x
|
|
drop table t1_1024, t2_1024;
|
|
#
|
|
# BUG##836491: Crash in Item_field::Item_field from add_ref_to_table_cond() with semijoin+materialization
|
|
#
|
|
CREATE TABLE t1 (c int, d varchar(1), KEY(d)) ;
|
|
INSERT INTO t1 VALUES (2,'x'),(2,'x'),(2,'j'),(2,'c');
|
|
CREATE TABLE t2 (a int, d varchar(1)) ;
|
|
INSERT INTO t2 VALUES (1,'x');
|
|
CREATE TABLE t3 (d varchar(1)) ;
|
|
INSERT INTO t3 VALUES ('x'),('x'),('j'),('c');
|
|
SELECT t2.a, t1.c
|
|
FROM t1, t2
|
|
WHERE t2.d IN ( SELECT d FROM t3 )
|
|
AND t1.d = t2.d
|
|
GROUP BY 1 , 2;
|
|
a c
|
|
1 2
|
|
drop table t1,t2,t3;
|
|
#
|
|
# BUG#836523: Crash in JOIN::get_partial_cost_and_fanout with semijoin+materialization
|
|
#
|
|
CREATE TABLE t1 (a varchar(1));
|
|
INSERT INTO t1 VALUES ('a'),('a');
|
|
CREATE TABLE t2 (a varchar(1));
|
|
CREATE TABLE t3 (a int);
|
|
INSERT INTO t3 VALUES (1),(2);
|
|
CREATE TABLE t4 (a varchar(1));
|
|
INSERT INTO t4 VALUES ('a'),('a');
|
|
SELECT t1.a
|
|
FROM t1
|
|
WHERE t1.a IN (
|
|
SELECT t2.a
|
|
FROM t2, t3
|
|
)
|
|
HAVING a IN (
|
|
SELECT a
|
|
FROM t4
|
|
);
|
|
a
|
|
DROP TABLE t1, t2, t3, t4;
|
|
#
|
|
# BUG#836507: Crash in setup_sj_materialization_part1() with semijoin+materialization
|
|
#
|
|
CREATE TABLE t1 (a int) ;
|
|
INSERT IGNORE INTO t1 VALUES (1),(1);
|
|
CREATE TABLE t2 (a int);
|
|
INSERT INTO t2 VALUES (1);
|
|
CREATE TABLE t3 (a int);
|
|
CREATE TABLE t4 (a int);
|
|
INSERT INTO t4 VALUES (2),(2);
|
|
CREATE TABLE t5 (a int);
|
|
INSERT INTO t5 VALUES (1);
|
|
SELECT * FROM t1
|
|
WHERE (a) IN (
|
|
SELECT t5.a
|
|
FROM (
|
|
t2
|
|
LEFT JOIN ( t3 , t4 )
|
|
ON 1 = 1
|
|
)
|
|
JOIN t5
|
|
);
|
|
a
|
|
1
|
|
1
|
|
DROP TABLE t1,t2,t3,t4,t5;
|
|
#
|
|
# BUG#836532: Crash in Item_equal_fields_iterator::get_curr_field with semijoin+materialization
|
|
#
|
|
CREATE TABLE t2 (a int);
|
|
INSERT IGNORE INTO t2 VALUES ('a'),('a');
|
|
Warnings:
|
|
Warning 1366 Incorrect integer value: 'a' for column `test`.`t2`.`a` at row 1
|
|
Warning 1366 Incorrect integer value: 'a' for column `test`.`t2`.`a` at row 2
|
|
CREATE TABLE t4 (a varchar(1));
|
|
INSERT INTO t4 VALUES ('m'),('o');
|
|
CREATE TABLE t3 (a varchar(1) , b varchar(1) ) ;
|
|
INSERT INTO t3 VALUES ('b','b');
|
|
CREATE TABLE t5 (a varchar(1), KEY (a)) ;
|
|
INSERT INTO t5 VALUES ('d'),('e');
|
|
SELECT *
|
|
FROM t2
|
|
WHERE t2.a = ALL (
|
|
SELECT t4.a
|
|
FROM t4
|
|
WHERE t4.a IN (
|
|
SELECT t3.a
|
|
FROM t3 , t5
|
|
WHERE ( t5.a = t3.b )
|
|
)
|
|
);
|
|
a
|
|
0
|
|
0
|
|
DROP TABLE t2,t3,t4,t5;
|
|
#
|
|
# BUG#860300: Second crash with get_fanout_with_deps() with semijoin + materialization
|
|
#
|
|
set @tmp_860300=@@optimizer_switch;
|
|
set optimizer_switch='semijoin=on,materialization=on,loosescan=off,firstmatch=off';
|
|
CREATE TABLE t1 (f2 int);
|
|
INSERT INTO t1 VALUES (9),(6);
|
|
CREATE TABLE t3 (f4 int);
|
|
CREATE TABLE t4 (f6 varchar(1));
|
|
SELECT *
|
|
FROM t3
|
|
WHERE 'h' IN (SELECT f6
|
|
FROM t4
|
|
WHERE 5 IN (SELECT f2 FROM t1)
|
|
GROUP BY t4.f6);
|
|
f4
|
|
DROP TABLE t1,t3,t4;
|
|
set optimizer_switch=@tmp_860300;
|
|
#
|
|
# BUG#860535: Assertion `keypart_map' failed in mi_rkey with semijoin
|
|
#
|
|
set @tmp_860535=@@optimizer_switch;
|
|
set optimizer_switch='semijoin=on,materialization=on,loosescan=off,firstmatch=off';
|
|
CREATE TABLE t1 (f3 int) ;
|
|
INSERT INTO t1 VALUES (1),(7);
|
|
CREATE TABLE t2 (f3 int , f5 varchar(1), KEY (f3)) ;
|
|
INSERT INTO t2 VALUES (7,'b');
|
|
CREATE TABLE t3 (f3 int , f4 varchar(1) , KEY(f3), KEY (f4,f3)) ;
|
|
INSERT INTO t3 VALUES (1,'t'),(7,'g');
|
|
CREATE TABLE t4
|
|
SELECT f3
|
|
FROM t1 WHERE ( f3 ) NOT IN (
|
|
SELECT f3
|
|
FROM t2
|
|
WHERE f5 IN (
|
|
SELECT f4
|
|
FROM t3
|
|
WHERE t3.f3 < 3
|
|
)
|
|
);
|
|
SELECT * FROM t4;
|
|
f3
|
|
1
|
|
7
|
|
DROP TABLE t1, t2, t3, t4;
|
|
set optimizer_switch=@tmp_860535;
|
|
#
|
|
# BUG#860553: Crash in create_ref_for_key with semijoin + materialization
|
|
#
|
|
CREATE TABLE t1 (f1 int) ;
|
|
CREATE TABLE t2 (f5 varchar(52) NOT NULL) ;
|
|
CREATE TABLE t3 (f1 varchar(3), f4 varchar(52) , KEY (f4), PRIMARY KEY (f1));
|
|
CREATE TABLE t4 (f3 int, KEY (f3));
|
|
INSERT INTO t4 VALUES (17),(20);
|
|
CREATE TABLE t5 (f2 int);
|
|
INSERT INTO t5 VALUES (0),(0);
|
|
SELECT *
|
|
FROM t1
|
|
JOIN t2
|
|
ON ( t2.f5 ) IN (
|
|
SELECT t3.f4
|
|
FROM t3
|
|
WHERE ( 1 ) IN (
|
|
SELECT t4.f3
|
|
FROM t4 , t5
|
|
)
|
|
);
|
|
f1 f5
|
|
DROP TABLE t1, t2, t3, t4, t5;
|
|
#
|
|
# BUG#868908: Crash in check_simple_equality() with semijoin + materialization + prepared statement
|
|
#
|
|
CREATE TABLE t1 ( a int );
|
|
CREATE TABLE t3 ( b int, c int) ;
|
|
CREATE TABLE t2 ( a int ) ;
|
|
CREATE TABLE t4 ( a int , c int) ;
|
|
PREPARE st1 FROM "
|
|
SELECT STRAIGHT_JOIN *
|
|
FROM t1
|
|
WHERE ( 3 ) IN (
|
|
SELECT t3.b
|
|
FROM t3
|
|
LEFT JOIN (
|
|
t2 STRAIGHT_JOIN t4 ON ( t4.c = t2.a )
|
|
) ON ( t4.a = t3.c )
|
|
);
|
|
";
|
|
EXECUTE st1;
|
|
a
|
|
EXECUTE st1;
|
|
a
|
|
DROP TABLE t1,t2,t3,t4;
|
|
#
|
|
# BUG#901032: Wrong result for MIN/MAX on an indexed column with materialization and semijoin
|
|
#
|
|
CREATE TABLE t1 ( a INT, KEY(a) );
|
|
INSERT INTO t1 VALUES (1);
|
|
CREATE TABLE t2 ( b INT );
|
|
INSERT INTO t2 VALUES (2);
|
|
CREATE TABLE t3 ( c INT );
|
|
INSERT INTO t3 VALUES (2);
|
|
SELECT MIN(a) FROM t1, t2 WHERE b IN (SELECT c FROM t3 GROUP BY c);
|
|
MIN(a)
|
|
1
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
#
|
|
# BUG#902632: Crash or invalid read at st_join_table::cleanup, st_table::disable_keyread
|
|
#
|
|
CREATE TABLE t1 ( a INT );
|
|
INSERT INTO t1 VALUES (1), (2);
|
|
CREATE TABLE t2 ( b INT );
|
|
INSERT INTO t2 VALUES (3), (4);
|
|
CREATE TABLE t3 ( c INT );
|
|
INSERT INTO t3 VALUES (5), (6);
|
|
SELECT * FROM t1 WHERE EXISTS (
|
|
SELECT DISTINCT b FROM t2
|
|
WHERE b <= a
|
|
AND b IN ( SELECT c FROM t3 GROUP BY c )
|
|
);
|
|
a
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
# BUG#901506: Crash in TABLE_LIST::print on EXPLAIN EXTENDED
|
|
#
|
|
CREATE TABLE t1 ( a INT, KEY(a) );
|
|
INSERT INTO t1 VALUES (8);
|
|
EXPLAIN EXTENDED
|
|
SELECT * FROM t1
|
|
WHERE a IN ( SELECT MIN(a) FROM t1 );
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 8 AS `a` from dual where <expr_cache><8>(<in_optimizer>(8,<exists>(/* select#2 */ select min(`test`.`t1`.`a`) from `test`.`t1` having <cache>(8) = <ref_null_helper>(min(`test`.`t1`.`a`)))))
|
|
DROP TABLE t1;
|
|
#
|
|
# BUG#904432: Wrong result with LEFT JOIN, constant table, semijoin=ON,materialization=ON
|
|
#
|
|
CREATE TABLE t1 ( a INT ) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (4);
|
|
CREATE TABLE t2 ( b INT NOT NULL, c INT );
|
|
INSERT INTO t2 VALUES (4,2),(4,2),(4,4),(1,1);
|
|
SELECT * FROM t1 LEFT JOIN t2 ON ( a = b )
|
|
WHERE a IN ( SELECT c FROM t2 );
|
|
a b c
|
|
4 4 2
|
|
4 4 2
|
|
4 4 4
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# BUG#922254: Assertion `0' failed at item_cmpfunc.cc:5899: Item* Item_equal::get_first(JOIN_TAB*, Item*)
|
|
#
|
|
CREATE TABLE t1 ( a VARCHAR(3)) CHARSET=latin1;
|
|
CREATE TABLE t2 ( b VARCHAR(3), c VARCHAR(8), KEY(c)) CHARSET=latin1;
|
|
INSERT INTO t2 VALUES ('USA','Abilene'),('USA','Akron');
|
|
EXPLAIN
|
|
SELECT * FROM
|
|
( SELECT * FROM t1 ) AS alias1,
|
|
t2 AS alias2
|
|
WHERE b = a AND a IN (
|
|
SELECT alias3.c
|
|
FROM t2 AS alias3, t2 AS alias4
|
|
WHERE alias4.c = alias3.b
|
|
);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
3 MATERIALIZED alias3 ALL NULL NULL NULL NULL 2 Using where
|
|
3 MATERIALIZED alias4 ref c c 11 test.alias3.b 1 Using where; Using index
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# BUG#928048: Query containing IN subquery with OR in the where clause returns a wrong result
|
|
#
|
|
create table t1 (a int, b int);
|
|
insert into t1 values (7,5), (3,3), (5,4), (9,3);
|
|
insert into t1 select seq,seq from seq_100_to_200;
|
|
create table t2 (a int, b int, index i_a(a));
|
|
insert into t2 values
|
|
(4,2), (7,9), (7,4), (3,1), (5,3), (3,1), (9,4), (8,1);
|
|
explain select * from t1 where t1.a in (select a from t2 where t2.a=7 or t2.b<=1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 105 Using where
|
|
2 MATERIALIZED t2 ALL i_a NULL NULL NULL 8 Using where
|
|
select * from t1 where t1.a in (select a from t2 where t2.a=7 or t2.b<=1);
|
|
a b
|
|
7 5
|
|
3 3
|
|
drop table t1,t2;
|
|
#
|
|
# BUG#933407: Valgrind warnings in mark_as_null_row with materialization+semijoin, STRAIGHT_JOIN, impossible WHERE
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (0),(8);
|
|
SELECT STRAIGHT_JOIN MIN(a) FROM t1
|
|
WHERE a IN (
|
|
SELECT a FROM t1
|
|
WHERE 'condition'='impossible'
|
|
);
|
|
MIN(a)
|
|
NULL
|
|
DROP TABLE t1;
|
|
#
|
|
# BUG#938131: Subquery materialization is not used in CREATE TABLE SELECT
|
|
#
|
|
CREATE TABLE t1(a int);
|
|
INSERT INTO t1 values(1),(2);
|
|
CREATE TABLE t2(a int);
|
|
INSERT INTO t2 values(1),(2);
|
|
# Should use Materialization:
|
|
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 GROUP BY a HAVING a > 1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where; Using temporary
|
|
flush status;
|
|
CREATE TABLE t3 SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 GROUP BY a HAVING a > 1);
|
|
SHOW STATUS LIKE 'Created_tmp_tables';
|
|
Variable_name Value
|
|
Created_tmp_tables 3
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
# BUG#939009: Crash with aggregate function in IN subquery
|
|
#
|
|
SET @local_optimizer_switch=@@optimizer_switch;
|
|
SET optimizer_switch='materialization=on,semijoin=on';
|
|
CREATE TABLE t1 (a int, b int);
|
|
INSERT INTO t1 VALUES (7,1), (4,2), (7,7);
|
|
CREATE TABLE t2 ( c INT );
|
|
INSERT INTO t2 VALUES (4), (7), (6);
|
|
EXPLAIN EXTENDED
|
|
SELECT * FROM t1
|
|
WHERE a IN (SELECT MAX(c) FROM t2) AND b=7 AND (a IS NULL OR a=b);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1 100.00
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from <materialize> (/* select#2 */ select max(`test`.`t2`.`c`) from `test`.`t2` having `MAX(c)` is null or `MAX(c)` = 7) join `test`.`t1` where `test`.`t1`.`b` = 7 and `test`.`t1`.`a` = `<subquery2>`.`MAX(c)` and (<cache>(/*always not null*/ 1 is null) or `<subquery2>`.`MAX(c)` = 7)
|
|
SELECT * FROM t1
|
|
WHERE a IN (SELECT MAX(c) FROM t2) AND b=7 AND (a IS NULL OR a=b);
|
|
a b
|
|
7 7
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE a IN (SELECT MAX(c) FROM t2 WHERE c < 4) AND b=7 AND (a IS NULL OR a=b);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <subquery2> const distinct_key distinct_key 4 const 1
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 Using where
|
|
SELECT * FROM t1
|
|
WHERE a IN (SELECT MAX(c) FROM t2 WHERE c < 4) AND b=7 AND (a IS NULL OR a=b);
|
|
a b
|
|
SET optimizer_switch=@local_optimizer_switch;
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# BUG#946055: Crash with semijoin IN subquery when hash join is used
|
|
#
|
|
CREATE TABLE t1 (a int);
|
|
INSERT INTO t1 VALUES (7);
|
|
CREATE TABLE t2 (b int, c int, d varchar(1), e varchar(1), KEY (c), KEY (d, c)) CHARSET=latin1;
|
|
INSERT INTO t2 VALUES
|
|
(4,2,'v','v'), (6,1,'v','v'), (0,5,'x','x'), (7,1,'x','x'),
|
|
(7,3,'i','i'), (7,1,'e','e'), (1,4,'p','p'), (1,2,'j','j');
|
|
SET @local_optimizer_switch=@@optimizer_switch;
|
|
SET join_cache_level=2;
|
|
EXPLAIN
|
|
SELECT a, c FROM t1, t2
|
|
WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
|
|
WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t2 index NULL c 5 NULL 8 Using where; Using index
|
|
2 MATERIALIZED s2 ref d d 4 const 2 Using where; Using index
|
|
2 MATERIALIZED s1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
3 SUBQUERY t2 ALL NULL NULL NULL NULL 8
|
|
SELECT a, c FROM t1, t2
|
|
WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
|
|
WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));
|
|
a c
|
|
7 1
|
|
7 1
|
|
7 1
|
|
SET optimizer_switch='join_cache_hashed=on';
|
|
SET join_cache_level=4;
|
|
EXPLAIN
|
|
SELECT a, c FROM t1, t2
|
|
WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
|
|
WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t2 index NULL c 5 NULL 8 Using where; Using index
|
|
2 MATERIALIZED s2 ref d d 4 const 2 Using where; Using index
|
|
2 MATERIALIZED s1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
3 SUBQUERY t2 ALL NULL NULL NULL NULL 8
|
|
SELECT a, c FROM t1, t2
|
|
WHERE (a, c) IN (SELECT s1.b, s1.c FROM t2 AS s1, t2 AS s2
|
|
WHERE s2.d = s1.e AND s1.e = (SELECT MAX(e) FROM t2));
|
|
a c
|
|
7 1
|
|
7 1
|
|
7 1
|
|
SET optimizer_switch=@local_optimizer_switch;
|
|
SET join_cache_level=@save_join_cache_level;
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# BUG#952297: Server crashes on 2nd execution of PS in Field::is_null with semijoin+materialization
|
|
#
|
|
CREATE TABLE t1 ( a VARCHAR(1) );
|
|
INSERT INTO t1 VALUES ('y'),('z');
|
|
CREATE TABLE t2 ( b VARCHAR(1), c VARCHAR(1) );
|
|
INSERT INTO t2 VALUES ('v','v'),('v','v');
|
|
CREATE VIEW v2 AS SELECT * FROM t2;
|
|
PREPARE ps FROM '
|
|
SELECT a FROM t1, v2
|
|
WHERE ( c, b ) IN ( SELECT b, b FROM t2 )
|
|
GROUP BY a ';
|
|
EXECUTE ps;
|
|
a
|
|
y
|
|
z
|
|
EXECUTE ps;
|
|
a
|
|
y
|
|
z
|
|
DROP VIEW v2;
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# BUG#1000269: Wrong result (extra rows) with semijoin+materialization, IN subqueries, join_cache_level>0
|
|
#
|
|
CREATE TABLE t1 (a1 VARCHAR(1), a2 VARCHAR(1)) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES ('b','b'),('e','e');
|
|
CREATE TABLE t2 (b1 VARCHAR(1), b2 VARCHAR(1), KEY(b1)) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES ('v','v'),('s','s'),('l','l'), ('y','y'),('c','c'),('i','i');
|
|
SELECT * FROM t1, t2 WHERE b1 IN ( SELECT b2 FROM t2 WHERE b1 > 'o' ) AND ( b1 < 'l' OR a1 IN ('b','c') );
|
|
a1 a2 b1 b2
|
|
b b v v
|
|
b b s s
|
|
b b y y
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# MDEV-4465: Reproducible crash (mysqld got signal 11) in multi_delete::initialize_tables with semijoin+materialization
|
|
#
|
|
CREATE TABLE t1 (
|
|
id int(11) NOT NULL
|
|
);
|
|
CREATE TABLE t2 (
|
|
id int(11) NOT NULL,
|
|
a_id int(11) DEFAULT NULL
|
|
);
|
|
insert into t1 values (1), (2), (3);
|
|
insert into t2 values (1, 1), (2, 1), (3, 1), (4, 2), (5, 3), (6, 3), (7, 3);
|
|
delete t2 from t2 where a_id in (select * from (select t1.id from t1 limit 2) as x);
|
|
drop table t1,t2;
|
|
# This must be at the end:
|
|
set optimizer_switch=@save_optimizer_switch;
|
|
set join_cache_level=@save_join_cache_level;
|
|
#
|
|
# MDEV-4908: Assertion `((Item_cond *) cond)->functype() ==
|
|
# ((Item_cond *) new_item)->functype()' fails on a query with
|
|
# IN and equal conditions, AND/OR, materialization+semijoin
|
|
#
|
|
SET @local_optimizer_switch=@@optimizer_switch;
|
|
SET optimizer_switch = 'materialization=on,semijoin=on';
|
|
CREATE TABLE t1 (pk INT, a INT, b INT, PRIMARY KEY(pk)) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1,3,5),(2,4,6);
|
|
SELECT * FROM t1 WHERE 8 IN ( SELECT MIN(pk) FROM t1 ) AND ( pk = a OR pk = b );
|
|
pk a b
|
|
drop table t1;
|
|
SET optimizer_switch=@local_optimizer_switch;
|
|
#
|
|
# MDEV-5011: ERROR Plugin 'MEMORY' has ref_count=1 after shutdown for SJM queries
|
|
#
|
|
CREATE TABLE t1 (pk INT, a INT, b INT, PRIMARY KEY(pk)) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1,3,5),(2,4,6);
|
|
SELECT * FROM t1 WHERE 8 IN (SELECT MIN(pk) FROM t1) AND (pk = a OR pk = b);
|
|
pk a b
|
|
DROP TABLE t1;
|
|
#
|
|
# MDEV-5368: Server crashes in Item_in_subselect::optimize on 2nd
|
|
# execution of PS with IN subqueries, materialization+semijoin
|
|
#
|
|
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1),(3);
|
|
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
|
|
CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2;
|
|
INSERT INTO t2 VALUES (8),(9);
|
|
PREPARE stmt FROM "
|
|
SELECT * FROM t1 WHERE 1 IN ( SELECT b FROM v2 WHERE 2 IN ( SELECT MAX(a) FROM t1 ) )
|
|
";
|
|
EXECUTE stmt;
|
|
a
|
|
EXECUTE stmt;
|
|
a
|
|
DROP TABLE t1, t2;
|
|
DROP VIEW v2;
|
|
#
|
|
# MDEV-5811: Server crashes in best_access_path with materialization+semijoin and big_tables=ON
|
|
#
|
|
set tmp_memory_table_size=0;
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (b INT);
|
|
INSERT INTO t2 VALUES (3),(4);
|
|
SELECT * FROM t1 AS t1_1, t1 AS t1_2
|
|
WHERE ( t1_1.a, t1_2.a ) IN ( SELECT MAX(b), MIN(b) FROM t2 );
|
|
a a
|
|
DROP TABLE t1,t2;
|
|
set tmp_memory_table_size=default;
|
|
# End of 5.3 tests
|
|
#
|
|
# MDEV-5056: Wrong result (extra rows) with materialization+semijoin, IN subqueries
|
|
#
|
|
set @tmp_mdev5056=@@join_cache_level;
|
|
SET join_cache_level = 2;
|
|
CREATE TABLE t1 ( c1 VARCHAR(2), c2 VARCHAR(2), INDEX(c1) ) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES
|
|
('JP','OM'),('VA','JP'),('CA','ML'),('ML','EG'),('DK','CA'),
|
|
('DK','QA'),('YE','PL'),('TR','ZW'),('DK','SK'),('SK','DK'),
|
|
('RO','ML'),('ML','BG'),('BG','ZW'),('ZW','GE'),('GE','JP'),
|
|
('PL','EG'),('QA','YE'),('WF','DK'),('DK','JP'),('EG','OM');
|
|
CREATE TABLE t2 ( c3 VARCHAR(2), c4 VARCHAR(2) ) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES ('CA','ML'),('IN','HU'),('HU','IN');
|
|
SELECT * FROM t1 AS alias1, t1 AS alias2
|
|
WHERE ( alias2.c2, alias1.c1 ) IN ( SELECT c4, c3 FROM t2 ) AND alias1.c1 IN ( SELECT c2 FROM t1 );
|
|
c1 c2 c1 c2
|
|
CA ML CA ML
|
|
CA ML RO ML
|
|
DROP TABLE t1,t2;
|
|
set join_cache_level=@tmp_mdev5056;
|
|
#
|
|
# MDEV-5368: Server crashes in Item_in_subselect::optimize on 2nd
|
|
# execution of PS with IN subqueries, materialization+semijoin
|
|
#
|
|
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1),(3);
|
|
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
|
|
CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2;
|
|
INSERT INTO t2 VALUES (8),(9);
|
|
PREPARE stmt FROM "
|
|
SELECT * FROM t1 WHERE 1 IN ( SELECT b FROM v2 WHERE 2 IN ( SELECT MAX(a) FROM t1 ) )
|
|
";
|
|
EXECUTE stmt;
|
|
a
|
|
EXECUTE stmt;
|
|
a
|
|
DROP TABLE t1, t2;
|
|
DROP VIEW v2;
|
|
#
|
|
# MDEV-6289 : Unexpected results when querying information_schema
|
|
#
|
|
CREATE TABLE t1 (
|
|
id int(11) unsigned NOT NULL AUTO_INCREMENT,
|
|
db varchar(254) NOT NULL DEFAULT '',
|
|
PRIMARY KEY (id),
|
|
UNIQUE KEY db (db)
|
|
) DEFAULT CHARSET=utf8 COLLATE utf8_general_ci;
|
|
INSERT INTO t1 (db) VALUES ('mysqltest1'),('mysqltest2'),('mysqltest3'),('mysqltest4');
|
|
drop database if exists mysqltest1;
|
|
drop database if exists mysqltest2;
|
|
drop database if exists mysqltest3;
|
|
drop database if exists mysqltest4;
|
|
create database mysqltest1;
|
|
create database mysqltest2;
|
|
create database mysqltest3;
|
|
create database mysqltest4;
|
|
SELECT db FROM t1 WHERE db IN (SELECT SCHEMA_NAME FROM information_schema.schemata) ORDER BY db DESC;
|
|
db
|
|
mysqltest4
|
|
mysqltest3
|
|
mysqltest2
|
|
mysqltest1
|
|
EXPLAIN EXTENDED
|
|
SELECT db FROM t1 WHERE db IN (SELECT SCHEMA_NAME FROM information_schema.schemata) ORDER BY db DESC;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 index db db 764 NULL 4 100.00 Using index; Using temporary; Using filesort
|
|
1 PRIMARY schemata ALL NULL NULL NULL NULL NULL NULL Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`db` AS `db` from `test`.`t1` semi join (`information_schema`.`schemata`) where `test`.`t1`.`db` = `information_schema`.`schemata`.`SCHEMA_NAME` order by `test`.`t1`.`db` desc
|
|
drop table t1;
|
|
drop database mysqltest1;
|
|
drop database mysqltest2;
|
|
drop database mysqltest3;
|
|
drop database mysqltest4;
|
|
#
|
|
# MDEV-7810 Wrong result on execution of a query as a PS
|
|
# (both 1st and further executions)
|
|
CREATE TABLE t1 (a INT NOT NULL) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (0),(8);
|
|
SELECT a FROM (SELECT DISTINCT * FROM t1) AS sq WHERE a IN (SELECT MIN(t2.a) FROM (t1 AS t2));
|
|
a
|
|
0
|
|
PREPARE stmt FROM "
|
|
SELECT a FROM (SELECT DISTINCT * FROM t1) AS sq WHERE a IN (SELECT MIN(t2.a) FROM (t1 AS t2))
|
|
";
|
|
execute stmt;
|
|
a
|
|
0
|
|
execute stmt;
|
|
a
|
|
0
|
|
drop table t1;
|
|
#
|
|
# MDEV-12429: IN subquery used in WHERE of EXISTS subquery
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk INT, f1 INT NOT NULL, f2 VARCHAR(3), f3 INT NULL, PRIMARY KEY(pk)) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1,1,'foo',8), (2,5,'bar',7);
|
|
create table t2 like t1;
|
|
insert into t2 select * from t1;
|
|
SELECT sq1.f2 FROM t1 AS sq1
|
|
WHERE EXISTS ( SELECT * FROM t2 AS sq2
|
|
WHERE sq1.`pk` IN ( SELECT f1 FROM t1 ) AND sq2.f1 = sq1.f1 );
|
|
f2
|
|
foo
|
|
set @local_optimizer_switch= @@optimizer_switch;
|
|
set optimizer_switch='exists_to_in=off';
|
|
EXPLAIN
|
|
SELECT sq1.f2 FROM t1 AS sq1
|
|
WHERE EXISTS ( SELECT * FROM t1 AS sq2
|
|
WHERE sq1.`pk` IN ( SELECT f1 FROM t1 ) AND sq2.f1 = sq1.f1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY sq1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where; FirstMatch
|
|
2 DEPENDENT SUBQUERY sq2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
# this checks the result set above
|
|
set optimizer_switch= 'materialization=off,semijoin=off';
|
|
SELECT sq1.f2 FROM t1 AS sq1
|
|
WHERE EXISTS ( SELECT * FROM t2 AS sq2
|
|
WHERE sq1.`pk` IN ( SELECT f1 FROM t1 ) AND sq2.f1 = sq1.f1 );
|
|
f2
|
|
foo
|
|
set optimizer_switch= @local_optimizer_switch;
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# MDEV-12145: IN subquery used in WHERE of EXISTS subquery
|
|
#
|
|
CREATE TABLE t1 (f1 INT) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (4),(6);
|
|
CREATE TABLE t2 (i2 INT, KEY(i2)) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (8),(7),(1);
|
|
CREATE TABLE t3 (f3 INT, i3 INT, KEY(i3)) ENGINE=MyISAM;
|
|
INSERT INTO t3 VALUES (8,0),(6,3),(2,8),(3,8),(1,6),(0,0),(1,0),(1,5);
|
|
set @local_optimizer_switch= @@optimizer_switch;
|
|
set optimizer_switch='exists_to_in=off';
|
|
SELECT * FROM t1
|
|
WHERE EXISTS ( SELECT * FROM t2, t3
|
|
WHERE i3 = i2 AND f1 IN ( SELECT f3 FROM t3 ) );
|
|
f1
|
|
6
|
|
EXPLAIN EXTENDED
|
|
SELECT * FROM t1
|
|
WHERE EXISTS ( SELECT * FROM t2, t3
|
|
WHERE i3 = i2 AND f1 IN ( SELECT f3 FROM t3 ) );
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 8 12.50 Using where; FirstMatch
|
|
2 DEPENDENT SUBQUERY t2 range i2 i2 5 NULL 3 100.00 Using where; Using index; Using join buffer (flat, BNL join)
|
|
2 DEPENDENT SUBQUERY t3 ref i3 i3 5 test.t2.i2 1 100.00 Using index
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.f1' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1` from `test`.`t1` where <expr_cache><`test`.`t1`.`f1`>(exists(/* select#2 */ select 1 from `test`.`t2` semi join (`test`.`t3`) join `test`.`t3` where `test`.`t3`.`i3` = `test`.`t2`.`i2` and `test`.`t1`.`f1` = `test`.`t3`.`f3` limit 1))
|
|
# this checks the result set above
|
|
set optimizer_switch= 'materialization=off,semijoin=off';
|
|
SELECT * FROM t1
|
|
WHERE EXISTS ( SELECT * FROM t2, t3
|
|
WHERE i3 = i2 AND f1 IN ( SELECT f3 FROM t3 ) );
|
|
f1
|
|
6
|
|
set optimizer_switch= @local_optimizer_switch;
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
# MDEV-9686: IN subquery used in WHERE of a subquery from select list
|
|
#
|
|
CREATE TABLE t1 (pk INT PRIMARY KEY, f1 INT);
|
|
INSERT INTO t1 VALUES (1, 4),(2, 3),(3, 3),(4, 6),(5, 3);
|
|
CREATE TABLE t2 (f2 INT);
|
|
INSERT INTO t2 VALUES (1),(2),(3),(4),(5);
|
|
# t1.pk is always IN ( SELECT f2 FROM t2 ),
|
|
# so the IN condition should be true for every row,
|
|
# and thus COUNT(*) should always return 5
|
|
SELECT pk, f1, ( SELECT COUNT(*) FROM t2
|
|
WHERE t1.pk IN ( SELECT f2 FROM t2 ) ) AS sq FROM t1;
|
|
pk f1 sq
|
|
1 4 5
|
|
2 3 5
|
|
3 3 5
|
|
4 6 5
|
|
5 3 5
|
|
EXPLAIN EXTENDED
|
|
SELECT pk, f1, ( SELECT COUNT(*) FROM t2
|
|
WHERE t1.pk IN ( SELECT f2 FROM t2 ) ) AS sq FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 20.00 Using where; FirstMatch
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using join buffer (flat, BNL join)
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.pk' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`f1` AS `f1`,<expr_cache><`test`.`t1`.`pk`>((/* select#2 */ select count(0) from `test`.`t2` semi join (`test`.`t2`) where `test`.`t1`.`pk` = `test`.`t2`.`f2`)) AS `sq` from `test`.`t1`
|
|
# this checks the result set above
|
|
set @local_optimizer_switch= @@optimizer_switch;
|
|
set optimizer_switch= 'materialization=off,semijoin=off';
|
|
SELECT pk, f1, ( SELECT COUNT(*) FROM t2
|
|
WHERE t1.pk IN ( SELECT f2 FROM t2 ) ) AS sq FROM t1;
|
|
pk f1 sq
|
|
1 4 5
|
|
2 3 5
|
|
3 3 5
|
|
4 6 5
|
|
5 3 5
|
|
set optimizer_switch= @local_optimizer_switch;
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# mdev-12838: scan of materialized of semi-join subquery in join
|
|
#
|
|
set @local_optimizer_switch=@@optimizer_switch;
|
|
CREATE TABLE t1 (
|
|
dispatch_group varchar(32),
|
|
assignment_group varchar(32),
|
|
sys_id char(32),
|
|
PRIMARY KEY (sys_id),
|
|
KEY idx1 (dispatch_group),
|
|
KEY idx2 (assignment_group)
|
|
) ENGINE=MyISAM CHARSET=latin1;
|
|
CREATE TABLE t2 (
|
|
ugroup varchar(32),
|
|
user varchar(32),
|
|
sys_id char(32),
|
|
PRIMARY KEY (sys_id),
|
|
KEY idx3 (ugroup),
|
|
KEY idx4 (user)
|
|
) ENGINE=MyISAM CHARSET=latin1;
|
|
CREATE TABLE t3 (
|
|
type mediumtext,
|
|
sys_id char(32),
|
|
PRIMARY KEY (sys_id)
|
|
) ENGINE=MyISAM CHARSET=latin1;
|
|
set optimizer_switch='materialization=off';
|
|
explain SELECT t1.assignment_group
|
|
FROM t1, t3
|
|
WHERE t1.assignment_group = t3.sys_id AND
|
|
t1.dispatch_group IN
|
|
(SELECT t2.ugroup
|
|
FROM t2, t3 t3_i
|
|
WHERE t2.ugroup = t3_i.sys_id AND
|
|
t3_i.type LIKE '59e22fb137032000158bbfc8bcbe5d52' AND
|
|
t2.user = '86826bf03710200044e0bfc8bcbe5d79');
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ref idx3,idx4 idx4 35 const 2 Using index condition; Using where; Start temporary
|
|
1 PRIMARY t3_i eq_ref PRIMARY PRIMARY 32 test.t2.ugroup 1 Using index condition; Using where
|
|
1 PRIMARY t1 ref idx1,idx2 idx1 35 test.t3_i.sys_id 2 Using index condition; Using where; End temporary
|
|
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 32 test.t1.assignment_group 1 Using where; Using index
|
|
SELECT t1.assignment_group
|
|
FROM t1, t3
|
|
WHERE t1.assignment_group = t3.sys_id AND
|
|
t1.dispatch_group IN
|
|
(SELECT t2.ugroup
|
|
FROM t2, t3 t3_i
|
|
WHERE t2.ugroup = t3_i.sys_id AND
|
|
t3_i.type LIKE '59e22fb137032000158bbfc8bcbe5d52' AND
|
|
t2.user = '86826bf03710200044e0bfc8bcbe5d79');
|
|
assignment_group
|
|
df50316637232000158bbfc8bcbe5d23
|
|
e08fad2637232000158bbfc8bcbe5d39
|
|
ec70316637232000158bbfc8bcbe5d60
|
|
7b10fd2637232000158bbfc8bcbe5d30
|
|
ebb4620037332000158bbfc8bcbe5d89
|
|
set optimizer_switch='materialization=on';
|
|
explain SELECT t1.assignment_group
|
|
FROM t1, t3
|
|
WHERE t1.assignment_group = t3.sys_id AND
|
|
t1.dispatch_group IN
|
|
(SELECT t2.ugroup
|
|
FROM t2, t3 t3_i
|
|
WHERE t2.ugroup = t3_i.sys_id AND
|
|
t3_i.type LIKE '59e22fb137032000158bbfc8bcbe5d52' AND
|
|
t2.user = '86826bf03710200044e0bfc8bcbe5d79');
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ref idx3,idx4 idx4 35 const 2 Using index condition; Using where; Start temporary
|
|
1 PRIMARY t3_i eq_ref PRIMARY PRIMARY 32 test.t2.ugroup 1 Using index condition; Using where
|
|
1 PRIMARY t1 ref idx1,idx2 idx1 35 test.t3_i.sys_id 2 Using index condition; Using where; End temporary
|
|
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 32 test.t1.assignment_group 1 Using where; Using index
|
|
set statement optimizer_prune_level=1 for explain SELECT t1.assignment_group
|
|
FROM t1, t3
|
|
WHERE t1.assignment_group = t3.sys_id AND
|
|
t1.dispatch_group IN
|
|
(SELECT t2.ugroup
|
|
FROM t2, t3 t3_i
|
|
WHERE t2.ugroup = t3_i.sys_id AND
|
|
t3_i.type LIKE '59e22fb137032000158bbfc8bcbe5d52' AND
|
|
t2.user = '86826bf03710200044e0bfc8bcbe5d79');
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ref idx3,idx4 idx4 35 const 2 Using index condition; Using where; Start temporary
|
|
1 PRIMARY t3_i eq_ref PRIMARY PRIMARY 32 test.t2.ugroup 1 Using index condition; Using where
|
|
1 PRIMARY t1 ref idx1,idx2 idx1 35 test.t3_i.sys_id 2 Using index condition; Using where; End temporary
|
|
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 32 test.t1.assignment_group 1 Using where; Using index
|
|
SELECT t1.assignment_group
|
|
FROM t1, t3
|
|
WHERE t1.assignment_group = t3.sys_id AND
|
|
t1.dispatch_group IN
|
|
(SELECT t2.ugroup
|
|
FROM t2, t3 t3_i
|
|
WHERE t2.ugroup = t3_i.sys_id AND
|
|
t3_i.type LIKE '59e22fb137032000158bbfc8bcbe5d52' AND
|
|
t2.user = '86826bf03710200044e0bfc8bcbe5d79');
|
|
assignment_group
|
|
df50316637232000158bbfc8bcbe5d23
|
|
e08fad2637232000158bbfc8bcbe5d39
|
|
ec70316637232000158bbfc8bcbe5d60
|
|
7b10fd2637232000158bbfc8bcbe5d30
|
|
ebb4620037332000158bbfc8bcbe5d89
|
|
DROP TABLE t1,t2,t3;
|
|
set optimizer_switch=@local_optimizer_switch;
|
|
#
|
|
# MDEV-16751: Server crashes in st_join_table::cleanup or
|
|
# TABLE_LIST::is_with_table_recursive_reference with join_cache_level>2
|
|
#
|
|
set @save_join_cache_level= @@join_cache_level;
|
|
set join_cache_level=4;
|
|
CREATE TABLE t1 ( id int NOT NULL);
|
|
INSERT INTO t1 VALUES (11),(12),(13),(14),(15),(16),(17),(18),(19);
|
|
CREATE TABLE t2 (i1 int NOT NULL, i2 int NOT NULL) ;
|
|
INSERT INTO t2 VALUES (11,11),(12,12),(13,13);
|
|
explain
|
|
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 9
|
|
1 PRIMARY t2 hash_ALL NULL #hash#$hj 8 test.t1.id,test.t1.id 3 Using where; FirstMatch(t1); Using join buffer (flat, BNLH join)
|
|
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);
|
|
1
|
|
1
|
|
1
|
|
1
|
|
set @@join_cache_level= @save_join_cache_level;
|
|
alter table t1 add key(id);
|
|
explain
|
|
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 index id id 4 NULL 9 Using index
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 3 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
|
|
SELECT 1 FROM t1 where t1.id IN (SELECT t2.i1 FROM t2 WHERE t2.i1 = t2.i2);
|
|
1
|
|
1
|
|
1
|
|
1
|
|
drop table t1,t2;
|
|
#
|
|
# MDEV-15454: Nested SELECT IN returns wrong results
|
|
#
|
|
CREATE TABLE t1 ( a int NOT NULL PRIMARY KEY);
|
|
CREATE TABLE t2 ( a int, b int );
|
|
INSERT INTO t2 VALUES (7878, 96),(3465, 96),(1403, 96),(4189, 96),(8732, 96), (5,96);
|
|
CREATE TABLE t3 (c int unsigned NOT NULL, b int unsigned NOT NULL, PRIMARY KEY (c,b));
|
|
INSERT INTO t3 (c, b) VALUES (27, 96);
|
|
CREATE PROCEDURE prepare_data()
|
|
BEGIN
|
|
DECLARE i INT DEFAULT 1;
|
|
WHILE i < 1000 DO
|
|
INSERT INTO t1 (a) VALUES (i);
|
|
INSERT INTO t2 (a,b) VALUES (i,56);
|
|
INSERT INTO t3 (c,b) VALUES (i,i);
|
|
SET i = i + 1;
|
|
END WHILE;
|
|
END$$
|
|
CALL prepare_data();
|
|
SELECT t2.a FROM t2 WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.c= 27);
|
|
a
|
|
7878
|
|
3465
|
|
1403
|
|
4189
|
|
8732
|
|
5
|
|
set @local_optimizer_switch= @@optimizer_switch;
|
|
SET optimizer_switch='materialization=off';
|
|
SELECT t1.a FROM t1
|
|
WHERE t1.a IN (SELECT t2.a FROM t2 WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.c= 27)) LIMIT 5;
|
|
a
|
|
5
|
|
SET optimizer_switch='materialization=on';
|
|
SELECT t1.a FROM t1
|
|
WHERE t1.a IN (SELECT t2.a FROM t2 WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.c= 27)) LIMIT 5;
|
|
a
|
|
5
|
|
drop procedure prepare_data;
|
|
set @@optimizer_switch= @local_optimizer_switch;
|
|
drop table t1,t2,t3;
|
|
CREATE TABLE t1 ( id int NOT NULL, key(id));
|
|
INSERT INTO t1 select seq from seq_11_to_39;
|
|
CREATE TABLE t2 (i1 int NOT NULL, i2 int NOT NULL);
|
|
INSERT INTO t2 select seq,seq+1 from seq_11_to_50;
|
|
CREATE VIEW v1 AS SELECT t2.i1 FROM t2 where t2.i1 = t2.i2;
|
|
explain SELECT 1 FROM t1 where t1.id IN (SELECT v1.i1 from v1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 index id id 4 NULL 29 Using index
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 40 Using where
|
|
SELECT 1 FROM t1 where t1.id IN (SELECT v1.i1 from v1);
|
|
1
|
|
drop table t1,t2;
|
|
drop view v1;
|
|
#
|
|
# MDEV-19580: function invocation in the left part of IN subquery
|
|
#
|
|
create table t1 (id int, a varchar(50), b int);
|
|
insert into t1 values
|
|
(1,'mrs',2), (2,'joe',2), (3,'paul',1), (4,'art',1);
|
|
create table t2 (id int, a varchar(50), x int);
|
|
insert into t2 values
|
|
(1,'grand',1),(2,'average',1),(3,'serf',0);
|
|
create table t3 (d1 date, d2 date, t1_id int, t2_id int );
|
|
insert into t3 values
|
|
('1972-01-01','1988-12-31',3,1), ('1972-01-01','1988-12-31',4,1),
|
|
('1972-01-01','1988-12-31',1,2), ('1972-01-01','1988-12-31',2,3);
|
|
create table t4 ( id int, a varchar(50) );
|
|
insert into t4 values
|
|
(1,'songwriter'),(2,'song character');
|
|
create function f1(who int, dt date) returns int
|
|
deterministic
|
|
begin
|
|
declare result int;
|
|
select t2_id into result from t3 where dt>=d1 and dt<=d2 and t1_id=who;
|
|
return result;
|
|
end$$
|
|
create function f2(who int, dt date) returns int
|
|
begin
|
|
declare result int;
|
|
select t2_id into result from t3 where dt>=d1 and dt<=d2 and t1_id=who;
|
|
return result;
|
|
end$$
|
|
# Deterministic function in left part of IN subquery: semi-join is OK
|
|
select * from t1
|
|
left join t4 on t1.b = t4.id
|
|
where f1(t1.id, '1980-01-01') in (select id from t2 where x=1);
|
|
id a b id a
|
|
3 paul 1 1 songwriter
|
|
4 art 1 1 songwriter
|
|
1 mrs 2 2 song character
|
|
explain extended select * from t1
|
|
left join t4 on t1.b = t4.id
|
|
where f1(t1.id, '1980-01-01') in (select id from t2 where x=1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 100.00
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00 Using where
|
|
1 PRIMARY t4 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) left join `test`.`t4` on(`test`.`t4`.`id` = `test`.`t1`.`b`) where `test`.`t2`.`x` = 1 and `f1`(`test`.`t1`.`id`,'1980-01-01') = `test`.`t2`.`id`
|
|
# Non-deterministic function in left part of IN subq: semi-join is OK
|
|
select * from t1
|
|
left join t4 on t1.b = t4.id
|
|
where f2(t1.id, '1980-01-01') in (select id from t2 where x=1);
|
|
id a b id a
|
|
3 paul 1 1 songwriter
|
|
4 art 1 1 songwriter
|
|
1 mrs 2 2 song character
|
|
explain extended select * from t1
|
|
left join t4 on t1.b = t4.id
|
|
where f2(t1.id, '1980-01-01') in (select id from t2 where x=1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 100.00
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00 Using where
|
|
1 PRIMARY t4 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) left join `test`.`t4` on(`test`.`t4`.`id` = `test`.`t1`.`b`) where `test`.`t2`.`x` = 1 and `f2`(`test`.`t1`.`id`,'1980-01-01') = `test`.`t2`.`id`
|
|
select t1.*, t4.*,
|
|
(select max(t4.id) from t4 where t4.id=t1.b and sleep(0) = 0) as s
|
|
from t1 left join t4 on t1.b = t4.id
|
|
where f2(t1.id, '1980-01-01') in (select id from t2 where x=1);
|
|
id a b id a s
|
|
3 paul 1 1 songwriter 1
|
|
4 art 1 1 songwriter 1
|
|
1 mrs 2 2 song character 2
|
|
explain extended select t1.*, t4.*,
|
|
(select max(t4.id) from t4 where t4.id=t1.b and sleep(0) = 0) as s
|
|
from t1 left join t4 on t1.b = t4.id
|
|
where f2(t1.id, '1980-01-01') in (select id from t2 where x=1);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 100.00
|
|
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 100.00 Using where
|
|
1 PRIMARY t4 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join)
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.b' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`a` AS `a`,(/* select#2 */ select max(`test`.`t4`.`id`) from `test`.`t4` where `test`.`t4`.`id` = `test`.`t1`.`b` and sleep(0) = 0) AS `s` from `test`.`t1` semi join (`test`.`t2`) left join `test`.`t4` on(`test`.`t4`.`id` = `test`.`t1`.`b`) where `test`.`t2`.`x` = 1 and `f2`(`test`.`t1`.`id`,'1980-01-01') = `test`.`t2`.`id`
|
|
drop function f1;
|
|
drop function f2;
|
|
drop table t1,t2,t3,t4;
|
|
# End of 5.5 tests
|
|
#
|
|
# MDEV-7220: Materialization strategy is not used for REPLACE ... SELECT
|
|
#
|
|
create table t0(a int);
|
|
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t1 (a int, b int, c int);
|
|
insert into t1
|
|
select A.a+B.a*10+C.a*100, A.a+B.a*10+C.a*100, A.a+B.a*10+C.a*100
|
|
from t0 A, t0 B, t0 C;
|
|
create table t2 (a int, b int, c int);
|
|
insert into t2 select A.a, A.a, A.a from t1 A;
|
|
insert into t2 select * from t2;
|
|
insert into t2 select * from t2;
|
|
create table t3 as select * from t2 limit 1;
|
|
# The testcase only makes sense if the following uses Materialization:
|
|
explain
|
|
select * from t1 where (a,b) in (select max(a),b from t2 group by b);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 1000 Using where
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 8 test.t1.a,test.t1.b 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 4000 Using temporary
|
|
flush status;
|
|
replace into t3
|
|
select * from t1 where (a,b) in (select max(a),b from t2 group by b);
|
|
# Sequential reads:
|
|
# 1K is read from t1
|
|
# 4K is read from t2
|
|
# 1K groups is read from the tmp. table
|
|
#
|
|
# Lookups:
|
|
# 4K lookups in group by table
|
|
# 1K lookups in temp.table
|
|
#
|
|
# Writes:
|
|
# 2x 1K writes to temporary tables (grouping table and subquery materialization table
|
|
#
|
|
# The point is that neither counter should be in the millions (this
|
|
# will happen if Materialization is not used
|
|
show status where Variable_name like 'Handler_read%' or Variable_name like 'Handler_%write%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 5004
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_retry 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_deleted 0
|
|
Handler_read_rnd_next 6003
|
|
Handler_tmp_write 2000
|
|
Handler_write 1000
|
|
drop table t0,t1,t2,t3;
|
|
#
|
|
# MDEV-7971: Assertion `name != __null' failed in ACL_internal_schema_registry::lookup
|
|
# on 2nd execution os PS with multi-table update
|
|
#
|
|
CREATE TABLE t1 (f1 INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (f2 INT);
|
|
INSERT INTO t2 VALUES (3),(4);
|
|
CREATE TABLE t3 (f3 INT);
|
|
INSERT INTO t3 VALUES (5),(6);
|
|
PREPARE stmt FROM '
|
|
UPDATE t1, t2
|
|
SET f1 = 5
|
|
WHERE 8 IN ( SELECT MIN(f3) FROM t3 )
|
|
';
|
|
EXECUTE stmt;
|
|
EXECUTE stmt;
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
# MDEV-10389: Query returns different results on a debug vs non-debug build of the same revision
|
|
#
|
|
CREATE TABLE t1 (i1 INT, i2 INT NOT NULL);
|
|
INSERT INTO t1 VALUES (1,4),(2,6);
|
|
SELECT * FROM t1 AS alias1
|
|
WHERE alias1.i1 IN (
|
|
SELECT i1 FROM t1 WHERE alias1.i2 IN ( SELECT i2 FROM t1 HAVING i2 <> 7 )
|
|
);
|
|
i1 i2
|
|
1 4
|
|
2 6
|
|
DROP TABLE t1;
|
|
#
|
|
# MDEV-31983 jointable materialization subquery optimization ignoring errors, then failing ASSERT.
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (b INT);
|
|
INSERT INTO t2 VALUES (3),(4);
|
|
CREATE TABLE t3 (c DATETIME, d INT, KEY(c));
|
|
INSERT INTO t3 VALUES ('2012-11-11',5),('2012-12-12',6);
|
|
UPDATE t1, t2 SET t1.a = 26 WHERE t2.b IN (SELECT MIN(d) FROM t3 WHERE c >= '2012-01');
|
|
ERROR 22007: Truncated incorrect datetime value: '2012-01'
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# a followup fix:
|
|
# MDEV-32682: Assertion `range->rows >= s->found_records' failed in best_access_path
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (b VARCHAR(10), pk INT, PRIMARY KEY (pk)) ENGINE=MyISAM;
|
|
ANALYZE TABLE t1, t2 PERSISTENT FOR ALL;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status Engine-independent statistics collected
|
|
test.t1 analyze status OK
|
|
test.t2 analyze status Engine-independent statistics collected
|
|
test.t2 analyze status Table is already up to date
|
|
SELECT STRAIGHT_JOIN t2.* FROM t1 JOIN t2 WHERE t2.b IS NULL AND t2.pk > 1;
|
|
b pk
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# MDEV-32612 Assertion `tab->select->quick' failed in test_if_skip_sort_order
|
|
#
|
|
CREATE TABLE t1 (l_orderkey int, l_linenumber int, l_quantity double,
|
|
PRIMARY KEY (l_orderkey,l_linenumber), KEY (l_orderkey),
|
|
KEY (l_orderkey,l_quantity)) engine=MyISAM;
|
|
INSERT INTO t1 VALUES (290,1,35),(290,2,2);
|
|
SELECT * FROM t1
|
|
WHERE l_quantity = 31
|
|
AND (l_quantity = 50 OR l_orderkey = 41)
|
|
ORDER BY l_orderkey, l_linenumber;
|
|
l_orderkey l_linenumber l_quantity
|
|
DROP TABLE t1;
|
|
# end of 10.6 tests
|
|
set @subselect_mat_test_optimizer_switch_value=null;
|
|
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
|
|
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
|
|
create table t0 (a int);
|
|
insert into t0 values (0),(1),(2);
|
|
create table t1 (a int);
|
|
insert into t1 values (0),(1),(2);
|
|
explain select a, a in (select a from t1) from t0;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t0 ALL NULL NULL NULL NULL 3
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
|
|
select a, a in (select a from t1) from t0;
|
|
a a in (select a from t1)
|
|
0 1
|
|
1 1
|
|
2 1
|
|
prepare s from 'select a, a in (select a from t1) from t0';
|
|
execute s;
|
|
a a in (select a from t1)
|
|
0 1
|
|
1 1
|
|
2 1
|
|
update t1 set a=123;
|
|
execute s;
|
|
a a in (select a from t1)
|
|
0 0
|
|
1 0
|
|
2 0
|
|
drop table t0, t1;
|
|
#
|
|
# LPBUG#609121: RQG: wrong result on aggregate + NOT IN + HAVING and
|
|
# partial_match_table_scan=on
|
|
#
|
|
create table t1 (c1 int);
|
|
create table t2 (c2 int);
|
|
insert into t1 values (1);
|
|
insert into t2 values (2);
|
|
set @@optimizer_switch='semijoin=off';
|
|
EXPLAIN
|
|
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 MATERIALIZED t2 system NULL NULL NULL NULL 1
|
|
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2);
|
|
c1_sum
|
|
NULL
|
|
EXPLAIN
|
|
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2) HAVING c1_sum;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 MATERIALIZED t2 system NULL NULL NULL NULL 1
|
|
SELECT SUM(c1) c1_sum FROM t1 WHERE c1 IN (SELECT c2 FROM t2) HAVING c1_sum;
|
|
c1_sum
|
|
drop table t1, t2;
|
|
#
|
|
# BUG#52344 - Subquery materialization:
|
|
# Assertion if subquery in on-clause of outer join
|
|
#
|
|
set @@optimizer_switch='semijoin=off';
|
|
CREATE TABLE t1 (i INTEGER);
|
|
INSERT INTO t1 VALUES (10);
|
|
CREATE TABLE t2 (j INTEGER);
|
|
INSERT INTO t2 VALUES (5);
|
|
CREATE TABLE t3 (k INTEGER);
|
|
EXPLAIN
|
|
SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
|
|
2 MATERIALIZED t3 system NULL NULL NULL NULL 0 Const row not found
|
|
SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3);
|
|
i
|
|
10
|
|
EXPLAIN
|
|
SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
|
|
2 MATERIALIZED t3 system NULL NULL NULL NULL 0 Const row not found
|
|
SELECT i FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3);
|
|
i
|
|
10
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# LPBUG#611622/BUG#52344: Subquery materialization: Assertion
|
|
# if subquery in on-clause of outer join
|
|
#
|
|
CREATE TABLE t1 (c1 int);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (c2 int);
|
|
INSERT INTO t2 VALUES (10);
|
|
PREPARE st1 FROM "
|
|
SELECT *
|
|
FROM t2 LEFT JOIN t2 t3 ON (8, 4) IN (SELECT c1, c1 FROM t1)";
|
|
EXECUTE st1;
|
|
c2 c2
|
|
10 NULL
|
|
EXECUTE st1;
|
|
c2 c2
|
|
10 NULL
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# Testcase backport: BUG#46548 IN-subqueries return 0 rows with materialization=on
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk int,
|
|
a varchar(1),
|
|
b varchar(4),
|
|
c varchar(4),
|
|
d varchar(4),
|
|
PRIMARY KEY (pk)
|
|
);
|
|
INSERT INTO t1 VALUES (1,'o','ffff','ffff','ffoo'),(2,'f','ffff','ffff','ffff');
|
|
CREATE TABLE t2 LIKE t1;
|
|
INSERT INTO t2 VALUES (1,'i','iiii','iiii','iiii'),(2,'f','ffff','ffff','ffff');
|
|
insert into t2 select -seq,"","","","" from seq_1_to_10;
|
|
SET @@optimizer_switch='default,semijoin=on,materialization=on';
|
|
EXPLAIN SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
|
|
SELECT pk FROM t1 WHERE (a) IN (SELECT a FROM t2 WHERE pk > 0);
|
|
pk
|
|
2
|
|
SELECT pk FROM t1 WHERE (b,c,d) IN (SELECT b,c,d FROM t2 WHERE pk > 0);
|
|
pk
|
|
2
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# BUG#724228: Wrong result with materialization=on and three aggregates in maria-5.3-mwl90
|
|
#
|
|
CREATE TABLE t1 ( f2 int(11)) ;
|
|
INSERT IGNORE INTO t1 VALUES ('7'),('9'),('7'),('4'),('2'),('6'),('8'),('5'),('6'),('188'),('2'),('1'),('1'),('0'),('9'),('4');
|
|
CREATE TABLE t2 ( f1 int(11), f2 int(11)) ENGINE=MyISAM;
|
|
INSERT IGNORE INTO t2 VALUES ('1','1');
|
|
CREATE TABLE t3 ( f1 int(11), f2 int(11), f3 int(11), PRIMARY KEY (f1)) ;
|
|
INSERT IGNORE INTO t3 VALUES ('16','6','1'),('18','3','4'),('19',NULL,'9'),('20','0','6'),('41','2','0'),('42','2','5'),('43','9','6'),('44','7','4'),('45','1','4'),('46','222','238'),('47','3','6'),('48','6','6'),('49',NULL,'1'),('50','5','1');
|
|
SET @_save_join_cache_level = @@join_cache_level;
|
|
SET @_save_optimizer_switch = @@optimizer_switch;
|
|
SET join_cache_level = 1;
|
|
SET optimizer_switch='materialization=on';
|
|
SELECT f1 FROM t3
|
|
WHERE
|
|
f1 NOT IN (SELECT MAX(f2) FROM t1) AND
|
|
f3 IN (SELECT MIN(f1) FROM t2) AND
|
|
f1 IN (SELECT COUNT(f2) FROM t1);
|
|
f1
|
|
16
|
|
SET @@join_cache_level = @_save_join_cache_level;
|
|
SET @@optimizer_switch = @_save_optimizer_switch;
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LPBUG#719198 Ordered_key::cmp_key_with_search_key(rownum_t): Assertion `!compare_pred[i]->null_value'
|
|
# failed with subquery on both sides of NOT IN and materialization
|
|
#
|
|
CREATE TABLE t1 (f1a int, f1b int) ;
|
|
INSERT IGNORE INTO t1 VALUES (1,1),(2,2);
|
|
CREATE TABLE t2 ( f2 int);
|
|
INSERT IGNORE INTO t2 VALUES (3),(4);
|
|
CREATE TABLE t3 (f3a int, f3b int);
|
|
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,in_to_exists=off';
|
|
EXPLAIN
|
|
SELECT * FROM t2 WHERE (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t2 WHERE (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1);
|
|
f2
|
|
EXPLAIN
|
|
SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1);
|
|
(SELECT f3a FROM t3) NOT IN (SELECT f1a FROM t1)
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t2 WHERE (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t2 WHERE (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1);
|
|
f2
|
|
EXPLAIN
|
|
SELECT (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
3 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1);
|
|
(SELECT f3a, f3b FROM t3) NOT IN (SELECT f1a, f1b FROM t1)
|
|
NULL
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LPBUG#730604 Assertion `bit < (map)->n_bits' failed in maria-5.3 with
|
|
# partial_match_rowid_merge
|
|
#
|
|
CREATE TABLE t1 (f1 int NOT NULL, f2 int, f3 int) ;
|
|
CREATE TABLE t2 (f1 int NOT NULL, f2 int, f3 int) ;
|
|
INSERT INTO t1 VALUES (60, 3, null), (61, null, 77);
|
|
INSERT INTO t2 VALUES (1000,6,2);
|
|
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,in_to_exists=off';
|
|
EXPLAIN
|
|
SELECT (f1, f2, f3) NOT IN
|
|
(SELECT COUNT(DISTINCT f2), f1, f3 FROM t1 GROUP BY f1, f3) as exp
|
|
FROM t2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 Using filesort
|
|
SELECT (f1, f2, f3) NOT IN
|
|
(SELECT COUNT(DISTINCT f2), f1, f3 FROM t1 GROUP BY f1, f3) as exp
|
|
FROM t2;
|
|
exp
|
|
1
|
|
drop table t1, t2;
|
|
#
|
|
# LPBUG#702301: MAX in select + always false WHERE with SQ
|
|
#
|
|
CREATE TABLE t1 (a int, b int, KEY (b));
|
|
INSERT INTO t1 VALUES (3,1), (4,2);
|
|
CREATE TABLE t2 (a int);
|
|
INSERT INTO t2 VALUES (7), (8);
|
|
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
|
|
SELECT MAX(t1.b) AS max_res FROM t1 WHERE (9) IN (SELECT a FROM t2);
|
|
max_res
|
|
NULL
|
|
EXPLAIN EXTENDED
|
|
SELECT MAX(t1.b) AS max_res FROM t1 WHERE (9) IN (SELECT a FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 100.00
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select max(`test`.`t1`.`b`) AS `max_res` from `test`.`t1` where 0
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
|
|
SELECT MAX(t1.b) AS max_res FROM t1 WHERE (9) IN (SELECT a FROM t2);
|
|
max_res
|
|
NULL
|
|
EXPLAIN EXTENDED
|
|
SELECT MAX(t1.b) AS max_res FROM t1 WHERE (9) IN (SELECT a FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select max(`test`.`t1`.`b`) AS `max_res` from `test`.`t1` where 0
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# LPBUG#825095: Wrong result with materialization and NOT IN with 2 expressions
|
|
#
|
|
CREATE TABLE t1 (a int,b int);
|
|
INSERT INTO t1 VALUES (4,4),(4,2);
|
|
CREATE TABLE t2 (b int, a int);
|
|
INSERT INTO t2 VALUES (4,3),(8,4);
|
|
set @@optimizer_switch='semijoin=off,in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
EXPLAIN SELECT *
|
|
FROM t1
|
|
WHERE (a, b) NOT IN (SELECT a, b FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
|
|
SELECT *
|
|
FROM t1
|
|
WHERE (a, b) NOT IN (SELECT a, b FROM t2);
|
|
a b
|
|
4 4
|
|
4 2
|
|
EXPLAIN
|
|
SELECT a, b, (a, b) NOT IN (SELECT a, b FROM t2) as sq
|
|
FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
|
|
SELECT a, b, (a, b) NOT IN (SELECT a, b FROM t2) as sq
|
|
FROM t1;
|
|
a b sq
|
|
4 4 1
|
|
4 2 1
|
|
drop table t1, t2;
|
|
#
|
|
# MDEV-15235: Assertion `length > 0' failed in create_ref_for_key
|
|
#
|
|
CREATE TABLE t1 (i INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (f CHAR(1));
|
|
INSERT INTO t2 VALUES ('a'),('b');
|
|
explain
|
|
SELECT * FROM t2 WHERE f IN ( SELECT LEFT('foo',0) FROM t1 ORDER BY 1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
SELECT * FROM t2 WHERE f IN ( SELECT LEFT('foo',0) FROM t1 ORDER BY 1 );
|
|
f
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# MDEV-18255: Server crashes in Bitmap<64u>::intersect
|
|
#
|
|
create table t1 (v1 varchar(1)) engine=myisam ;
|
|
create table t2 (v1 varchar(1)) engine=myisam ;
|
|
explain
|
|
select 1 from t1 where exists
|
|
(select 1 from t1 where t1.v1 in (select t2.v1 from t2 having t2.v1 < 'j')) ;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
3 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
select 1 from t1 where exists
|
|
(select 1 from t1 where t1.v1 in (select t2.v1 from t2 having t2.v1 < 'j')) ;
|
|
1
|
|
drop table t1,t2;
|
|
#
|
|
# MDEV-9489: Assertion `0' failed in Protocol::end_statement() on
|
|
# UNION ALL
|
|
#
|
|
CREATE TABLE t1 (f1 INT);
|
|
CREATE TABLE t2 (f2 INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
( SELECT 1 FROM t1 WHERE f1 NOT IN ( SELECT f2 FROM t2 ) LIMIT 0 )
|
|
UNION ALL
|
|
( SELECT 1 FROM t1 WHERE f1 NOT IN ( SELECT f2 FROM t2 ) )
|
|
;
|
|
1
|
|
1
|
|
1
|
|
drop table t1, t2;
|