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4a03a1d777
Do not make substitution of a single-row table if it is an inner table of an outer join with on expression containing an expensive subquery.
1592 lines
93 KiB
Text
1592 lines
93 KiB
Text
set @subselect_mat_test_optimizer_switch_value='materialization=on,in_to_exists=off,semijoin=off';
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set @subselect_sj_mat_tmp= @@optimizer_switch;
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set optimizer_switch=ifnull(@subselect_mat_test_optimizer_switch_value, 'semijoin=on,firstmatch=on,loosescan=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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drop table if exists t1, t2, t3, 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));
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create table t2 (b1 char(8), b2 char(8));
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create table t3 (c1 char(8), c2 char(8));
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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));
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create table t2i (b1 char(8), b2 char(8));
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create table t3i (c1 char(8), c2 char(8));
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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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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 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
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Warnings:
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Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (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 SUBQUERY 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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b1` 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`)))))
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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 SUBQUERY 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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (`test`.`t2`.`b1` > '0') group 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`)))))
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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 SUBQUERY 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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (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 SUBQUERY t2i index it2i1,it2i3 it2i1 # NULL 5 100.00 Using where;
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Warnings:
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Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (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 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 SUBQUERY t2i range it2i1,it2i3 # 9 # 3 100.00 #
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Warnings:
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Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <in_optimizer>(`test`.`t1i`.`a1`,`test`.`t1i`.`a1` in ( <materialize> (select `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>`.`b1`)))))
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select * from t1i where a1 in (select 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 SUBQUERY t2i index it2i1,it2i3 it2i3 # NULL 5 100.00 Using where;
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Warnings:
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Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (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, b2 from t2i 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 t1i index NULL # # # 3 100.00 #
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2 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
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Warnings:
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Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,`test`.`t2i`.`b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group 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`)))))
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select * from t1i where (a1, a2) in (select b1, b2 from t2i 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 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 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
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Warnings:
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Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (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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explain extended
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select * from t1 where (a1, a2) in (select b1, max(b2) from t2i 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 SUBQUERY t2i range NULL it2i3 9 NULL 3 100.00 Using index for group-by
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Warnings:
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Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` 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>`.`max(b2)`)))))
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select * from t1 where (a1, a2) in (select b1, max(b2) from t2i 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 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 SUBQUERY t2i range NULL it2i3 9 NULL 3 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 SUBQUERY t2i range NULL it2i3 9 NULL 3 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 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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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 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by
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Warnings:
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Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (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 MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
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set @save_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;
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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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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=@save_optimizer_switch;
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explain extended
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select * from t1 where (a1, a2) in (select b1, b2 from t2 order 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 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00
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Warnings:
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Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (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`)))))
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select * from t1 where (a1, a2) in (select b1, b2 from t2 order 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 t1i where (a1, a2) in (select b1, b2 from t2i order 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 t1i index NULL it1i3 18 NULL 3 100.00 Using where; Using index
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2 SUBQUERY t2i index NULL it2i3 18 NULL 5 100.00 Using index
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Warnings:
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|
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where <in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (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 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
4 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (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 <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (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 SUBQUERY t3i index NULL # # # 4 100.00 #
|
|
4 SUBQUERY t2i index it2i2 # # # 5 100.00 #
|
|
2 SUBQUERY t2i index it2i1,it2i3 # # # 5 100.00 #
|
|
Warnings:
|
|
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (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 <in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (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 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
6 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (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 <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (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 <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (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 SUBQUERY t3c ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
6 SUBQUERY 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 SUBQUERY 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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`)))) or <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (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 <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where <in_optimizer>((`test`.`t3c`.`c1`,`test`.`t3c`.`c2`),(`test`.`t3c`.`c1`,`test`.`t3c`.`c2`) in ( <materialize> (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 SUBQUERY t3 ALL NULL # # # 4 100.00 #
|
|
6 SUBQUERY t2i index it2i2 # # # 5 100.00 #
|
|
2 SUBQUERY t2 ALL NULL # # # 5 100.00 #
|
|
4 SUBQUERY t3 ALL NULL # # # 4 100.00 #
|
|
3 SUBQUERY t3 ALL NULL # # # 4 100.00 #
|
|
7 UNION t1i index NULL # # # 3 100.00 #
|
|
9 SUBQUERY t3i index NULL # # # 4 100.00 #
|
|
10 SUBQUERY t2i index it2i2 # # # 5 100.00 #
|
|
8 SUBQUERY t2i index it2i1,it2i3 # # # 5 100.00 #
|
|
NULL UNION RESULT <union1,7> ALL NULL # # # NULL NULL #
|
|
Warnings:
|
|
Note 1003 (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where (<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (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 <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (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`)))))) group 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`))))) and <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (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 `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` where (<in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (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 <in_optimizer>((`test`.`t1i`.`a1`,`test`.`t1i`.`a2`),(`test`.`t1i`.`a1`,`test`.`t1i`.`a2`) in ( <materialize> (select `test`.`t3i`.`c1`,`test`.`t3i`.`c2` from `test`.`t3i` where <in_optimizer>((`test`.`t3i`.`c1`,`test`.`t3i`.`c2`),(`test`.`t3i`.`c1`,`test`.`t3i`.`c2`) in ( <materialize> (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 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
5 SUBQUERY 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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(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 `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 <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),(`test`.`t1`.`a1`,`test`.`t1`.`a2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (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 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
5 SUBQUERY 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 `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 <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(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 `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 <in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (select `test`.`t3`.`c1`,`test`.`t3`.`c2` from `test`.`t3` where <in_optimizer>((`test`.`t3`.`c1`,`test`.`t3`.`c2`),(`test`.`t3`.`c1`,`test`.`t3`.`c2`) in ( <materialize> (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 `test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t3` where <in_optimizer>(`test`.`t3`.`c1`,<exists>(select `test`.`t1`.`a1` from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t3`.`c1`) = `test`.`t1`.`a1`)) union 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 2 100.00 Using index; Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
4 SUBQUERY 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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (<in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t2`.`b1`,`test`.`t2`.`b2` from `test`.`t2` where ((<in_optimizer>(`test`.`t2`.`b2`,<exists>(select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where ((`test`.`t3a`.`c1` = `test`.`t1`.`a1`) and (<cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`)))) or <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (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 <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select `test`.`t3c`.`c1`,`test`.`t3c`.`c2` from `test`.`t3` `t3c` where (<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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))
|
|
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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(select '1 - 01','2 - 01' having (((<cache>(`test`.`t1`.`a1`) = '1 - 01') or isnull('1 - 01')) and ((<cache>(`test`.`t1`.`a2`) = '2 - 01') or isnull('2 - 01')) and <is_not_null_test>('1 - 01') and <is_not_null_test>('2 - 01'))))
|
|
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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by (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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by <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
|
|
/* 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 `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` order by (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 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 <in_optimizer>(`test`.`t1_16`.`a1`,<exists>(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 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 <in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(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 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (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 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 <in_optimizer>(`test`.`t1_16`.`a1`,<exists>(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 SUBQUERY t2_16 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_16`.`a1`,`test`.`t1_16`.`a1` in ( <materialize> (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 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where <in_optimizer>(concat(`test`.`t1`.`a1`,'x'),<exists>(select left(`test`.`t1_16`.`a1`,8) from `test`.`t1_16` where (<in_optimizer>((`test`.`t1_16`.`a1`,`test`.`t1_16`.`a2`),<exists>(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 <in_optimizer>(`test`.`t2`.`b1`,`test`.`t2`.`b1` in ( <materialize> (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 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 <in_optimizer>(`test`.`t1_512`.`a1`,<exists>(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 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 <in_optimizer>((`test`.`t1_512`.`a1`,`test`.`t1_512`.`a2`),<exists>(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 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (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 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (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)
|
|
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 SUBQUERY t2_512 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_512`.`a1`,`test`.`t1_512`.`a1` in ( <materialize> (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)
|
|
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 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 <in_optimizer>(`test`.`t1_1024`.`a1`,<exists>(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 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 <in_optimizer>((`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a2`),<exists>(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 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 <in_optimizer>(`test`.`t1_1024`.`a1`,<exists>(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 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (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)
|
|
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 SUBQUERY t2_1024 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_1024`.`a1`,`test`.`t1_1024`.`a1` in ( <materialize> (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)
|
|
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 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 <in_optimizer>(`test`.`t1_1025`.`a1`,<exists>(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 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 <in_optimizer>((`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a2`),<exists>(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 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 <in_optimizer>(`test`.`t1_1025`.`a1`,<exists>(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 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (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)
|
|
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 SUBQUERY t2_1025 ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 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 <in_optimizer>(`test`.`t1_1025`.`a1`,`test`.`t1_1025`.`a1` in ( <materialize> (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)
|
|
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 SUBQUERY t2bit ALL NULL NULL NULL NULL 3 100.00
|
|
Warnings:
|
|
Note 1003 select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` where <in_optimizer>((`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`),(`test`.`t1bit`.`a1`,`test`.`t1bit`.`a2`) in ( <materialize> (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 conv(`test`.`t1bb`.`a1`,10,2) AS `bin(a1)`,`test`.`t1bb`.`a2` AS `a2` from `test`.`t1bb` where <in_optimizer>((`test`.`t1bb`.`a1`,`test`.`t1bb`.`a2`),<exists>(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 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (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 SUBQUERY t2 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (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 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (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 index NULL it1a 4 NULL 7 100.00 Using index
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (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 index NULL it1a 4 NULL 7 100.00 Using index
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 7 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (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 index NULL iab 8 NULL 7 100.00 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 `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <in_optimizer>(`test`.`t1`.`a`,<exists>(select `test`.`t2`.`c` from `test`.`t2` where (<nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(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 `test`.`t1`.`a` AS `a` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a`,<exists>(select `test`.`t2`.`c` from `test`.`t2` where (<nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(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 b1 from t2 group by b1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
|
|
select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
|
|
min(a1)
|
|
NULL
|
|
set @save_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 b1 from t2 group by b1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
|
|
select min(a1) from t1 where 7 in (select 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 t1 system NULL NULL NULL NULL 1
|
|
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
|
|
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 t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
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 t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
select min(a1) from t1 where 7 in (select b1 from t2) or 2> 4;
|
|
min(a1)
|
|
NULL
|
|
set @@optimizer_switch= @save_optimizer_switch;
|
|
drop table t1,t2;
|
|
create table t1 (a char(2), b varchar(10));
|
|
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 SUBQUERY 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;
|
|
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 @save_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 <subquery2> ALL distinct_key NULL NULL NULL 2
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
|
|
SELECT COUNT(*) FROM t1 WHERE (f1,f2) IN (SELECT f1,f2 FROM t2);
|
|
COUNT(*)
|
|
2
|
|
set @@optimizer_switch= @save_optimizer_switch;
|
|
DROP TABLE t1, t2;
|
|
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');
|
|
set @save_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 2
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 Using index condition; Rowid-ordered scan
|
|
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=@save_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 @save_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=@save_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 SUBQUERY 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;
|
|
set optimizer_switch=@subselect_sj_mat_tmp;
|
|
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 SUBQUERY 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 SUBQUERY 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 SUBQUERY 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 SUBQUERY 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 SUBQUERY 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');
|
|
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 <subquery2> eq_ref distinct_key distinct_key 5 func 1
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 2 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;
|
|
#
|
|
# 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 t2 ALL NULL NULL NULL NULL 2
|
|
3 SUBQUERY 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 DEPENDENT 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 t2 ALL NULL NULL NULL NULL 2
|
|
3 SUBQUERY 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 DEPENDENT 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)
|
|
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 SUBQUERY 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)
|
|
FROM t2;
|
|
(f1, f2, f3) NOT IN
|
|
(SELECT COUNT(DISTINCT f2), f1, f3 FROM t1 GROUP BY f1, f3)
|
|
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 t1 index NULL b 5 NULL 2 100.00 Using index
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00
|
|
Warnings:
|
|
Note 1003 select max(`test`.`t1`.`b`) AS `max_res` from `test`.`t1` where <in_optimizer>(9,9 in ( <materialize> (select `test`.`t2`.`a` from `test`.`t2` ), <primary_index_lookup>(9 in <temporary table> on distinct_key where ((9 = `<subquery2>`.`a`)))))
|
|
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 t1 index NULL b 5 NULL 2 100.00 Using index
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select max(`test`.`t1`.`b`) AS `max_res` from `test`.`t1` where <in_optimizer>(9,<exists>(select `test`.`t2`.`a` from `test`.`t2` where (9 = `test`.`t2`.`a`)))
|
|
DROP TABLE t1,t2;
|