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Commit f46c5de0 authored by Sergey Petrunya's avatar Sergey Petrunya
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MWL#90: Subqueries: Inside-out execution for non-semijoin materialized 

  subqueries that are AND-parts of the WHERE
- Make test results handle same-cost QEP races
parent 7e5b19e1
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Showing with 38 additions and 33 deletions
mysql-test/r/subselect_mat.result
View file @ f46c5de0
...@@ -98,9 +98,9 @@ a1 a2 ...@@ -98,9 +98,9 @@ a1 a2
explain extended explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1); select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY SUBQUERY#2 ALL distinct_key NULL NULL NULL 3 100.00 1 PRIMARY SUBQUERY#2 ALL distinct_key # NULL # 3 100.00 #
1 PRIMARY t1i ref it1i1,it1i3 it1i3 9 materialized subselect.b1 1 100.00 Using index 1 PRIMARY t1i ref it1i1,it1i3 # 9 # 1 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 it2i1 9 NULL 3 100.00 Using where; Using index for group-by 2 SUBQUERY t2i range it2i1,it2i3 # 9 # 3 100.00 #
Warnings: Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1` AS `b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where (`test`.`t1i`.`a1` = `materialized subselect`.`b1`) Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1` AS `b1` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where (`test`.`t1i`.`a1` = `materialized subselect`.`b1`)
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1); select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
...@@ -122,9 +122,9 @@ a1 a2 ...@@ -122,9 +122,9 @@ a1 a2
explain extended explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2); select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY SUBQUERY#2 ALL distinct_key NULL NULL NULL 3 100.00 1 PRIMARY SUBQUERY#2 ALL distinct_key # # # 3 100.00 #
1 PRIMARY t1i ref it1i1,it1i2,it1i3 it1i3 18 materialized subselect.b1,materialized subselect.b2 1 100.00 Using index 1 PRIMARY t1i ref it1i1,it1i2,it1i3 # # # 1 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by 2 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
Warnings: Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2`) join `test`.`t1i` where ((`test`.`t1i`.`a2` = `materialized subselect`.`b2`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`)) Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`,`test`.`t2i`.`b2`) join `test`.`t1i` where ((`test`.`t1i`.`a2` = `materialized subselect`.`b2`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`))
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2); select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
...@@ -134,9 +134,9 @@ a1 a2 ...@@ -134,9 +134,9 @@ a1 a2
explain extended explain extended
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY SUBQUERY#2 ALL distinct_key NULL NULL NULL 3 100.00 1 PRIMARY SUBQUERY#2 ALL distinct_key # # # 3 100.00 #
1 PRIMARY t1i ref it1i1,it1i2,it1i3 it1i3 18 materialized subselect.b1,materialized subselect.min(b2) 1 100.00 Using index 1 PRIMARY t1i ref it1i1,it1i2,it1i3 # # # 1 100.00 #
2 SUBQUERY t2i range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by 2 SUBQUERY t2i range it2i1,it2i3 # # # 3 100.00 #
Warnings: Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,min(`test`.`t2i`.`b2`) AS `min(b2)` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where ((`test`.`t1i`.`a2` = `materialized subselect`.`min(b2)`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`)) Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,min(`test`.`t2i`.`b2`) AS `min(b2)` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1`) join `test`.`t1i` where ((`test`.`t1i`.`a2` = `materialized subselect`.`min(b2)`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`))
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
...@@ -307,13 +307,13 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and ...@@ -307,13 +307,13 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
(a1, a2) in (select c1, c2 from t3i (a1, a2) in (select c1, c2 from t3i
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); 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 id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY SUBQUERY#2 ALL distinct_key NULL NULL NULL 5 0.00 1 PRIMARY SUBQUERY#2 ALL distinct_key # # # 5 0.00 #
1 PRIMARY SUBQUERY#3 eq_ref distinct_key distinct_key 18 materialized subselect.b1,materialized subselect.b2 1 100.00 1 PRIMARY SUBQUERY#3 eq_ref distinct_key # # # 1 100.00 #
1 PRIMARY t1i ref it1i1,it1i2,it1i3 it1i3 18 materialized subselect.b1,materialized subselect.c2 1 100.00 Using where; Using index 1 PRIMARY t1i ref it1i1,it1i2,it1i3 # # # 1 100.00 #
3 SUBQUERY t3i index it3i1,it3i2,it3i3 it3i3 18 NULL 4 100.00 Using index 3 SUBQUERY t3i index it3i1,it3i2,it3i3 # # # 4 100.00 #
3 SUBQUERY SUBQUERY#4 eq_ref distinct_key distinct_key 18 test.t3i.c1,test.t3i.c2 1 100.00 3 SUBQUERY SUBQUERY#4 eq_ref distinct_key # # # 1 100.00 #
4 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index 4 SUBQUERY t2i index it2i2 # # # 5 100.00 #
2 SUBQUERY t2i index it2i1,it2i3 it2i3 18 NULL 5 100.00 Using where; Using index 2 SUBQUERY t2i index it2i1,it2i3 # # # 5 100.00 #
Warnings: Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t3i`.`c1` AS `c1`,`test`.`t3i`.`c2` AS `c2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0')) join `test`.`t3i` where ((`materialized subselect`.`b2` = `test`.`t3i`.`c2`) and (`materialized subselect`.`b1` = `test`.`t3i`.`c1`))) join <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0')) join `test`.`t1i` where ((`materialized subselect`.`c2` = `materialized subselect`.`b2`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`) and (`materialized subselect`.`c1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`)) Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t3i`.`c1` AS `c1`,`test`.`t3i`.`c2` AS `c2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0')) join `test`.`t3i` where ((`materialized subselect`.`b2` = `test`.`t3i`.`c2`) and (`materialized subselect`.`b1` = `test`.`t3i`.`c1`))) join <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0')) join `test`.`t1i` where ((`materialized subselect`.`c2` = `materialized subselect`.`b2`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`) and (`materialized subselect`.`c1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`))
select * from t1i select * from t1i
...@@ -392,23 +392,23 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and ...@@ -392,23 +392,23 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
(a1, a2) in (select c1, c2 from t3i (a1, a2) in (select c1, c2 from t3i
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'))); 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 id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY SUBQUERY#2 ALL distinct_key NULL NULL NULL 5 0.00 1 PRIMARY SUBQUERY#2 ALL distinct_key # # # 5 0.00 #
1 PRIMARY SUBQUERY#5 eq_ref distinct_key distinct_key 18 materialized subselect.b1,materialized subselect.b2 1 100.00 1 PRIMARY SUBQUERY#5 eq_ref distinct_key # # # 1 100.00 #
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer 1 PRIMARY t1 ALL NULL # # # 3 100.00 #
5 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 5 SUBQUERY t3 ALL NULL # # # 4 100.00 #
5 SUBQUERY SUBQUERY#6 eq_ref distinct_key distinct_key 18 test.t3.c1,test.t3.c2 1 100.00 5 SUBQUERY SUBQUERY#6 eq_ref distinct_key # # # 1 100.00 #
6 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index 6 SUBQUERY t2i index it2i2 # # # 5 100.00 #
2 SUBQUERY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using temporary; Using filesort 2 SUBQUERY t2 ALL NULL # # # 5 100.00 #
4 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where 4 SUBQUERY t3 ALL NULL # # # 4 100.00 #
3 SUBQUERY t3 ALL NULL NULL NULL NULL 4 100.00 Using where 3 SUBQUERY t3 ALL NULL # # # 4 100.00 #
7 UNION SUBQUERY#8 ALL distinct_key NULL NULL NULL 5 0.00 7 UNION SUBQUERY#8 ALL distinct_key # # # 5 0.00 #
7 UNION SUBQUERY#9 eq_ref distinct_key distinct_key 18 materialized subselect.b1,materialized subselect.b2 1 100.00 7 UNION SUBQUERY#9 eq_ref distinct_key # # # 1 100.00 #
7 UNION t1i ref it1i1,it1i2,it1i3 it1i3 18 materialized subselect.b1,materialized subselect.c2 1 100.00 Using where; Using index 7 UNION t1i ref it1i1,it1i2,it1i3 # # # 1 100.00 #
9 SUBQUERY t3i index it3i1,it3i2,it3i3 it3i3 18 NULL 4 100.00 Using index 9 SUBQUERY t3i index it3i1,it3i2,it3i3 # # # 4 100.00 #
9 SUBQUERY SUBQUERY#10 eq_ref distinct_key distinct_key 18 test.t3i.c1,test.t3i.c2 1 100.00 9 SUBQUERY SUBQUERY#10 eq_ref distinct_key # # # 1 100.00 #
10 SUBQUERY t2i index it2i2 it2i3 18 NULL 5 100.00 Using where; Using index 10 SUBQUERY t2i index it2i2 # # # 5 100.00 #
8 SUBQUERY t2i index it2i1,it2i3 it2i3 18 NULL 5 100.00 Using where; Using index 8 SUBQUERY t2i index it2i1,it2i3 # # # 5 100.00 #
NULL UNION RESULT <union1,7> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union1,7> ALL NULL # # # NULL NULL #
Warnings: Warnings:
Note 1003 (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0')) join `test`.`t3` where ((`materialized subselect`.`b2` = `test`.`t3`.`c2`) and (`materialized subselect`.`b1` = `test`.`t3`.`c1`))) join <materialize> (select `test`.`t2`.`b1` AS `b1`,`test`.`t2`.`b2` AS `b2` from `test`.`t2` where (<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` AS `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` = `materialized subselect`.`c2`))))) or <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` AS `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` = `materialized subselect`.`c2`)))))) group by `test`.`t2`.`b1`,`test`.`t2`.`b2`) join `test`.`t1` where ((`materialized subselect`.`c2` = `materialized subselect`.`b2`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`) and (`materialized subselect`.`c1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a1` = `materialized subselect`.`b1`))) union (select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t3i`.`c1` AS `c1`,`test`.`t3i`.`c2` AS `c2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0')) join `test`.`t3i` where ((`materialized subselect`.`b2` = `test`.`t3i`.`c2`) and (`materialized subselect`.`b1` = `test`.`t3i`.`c1`))) join <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0')) join `test`.`t1i` where ((`materialized subselect`.`c2` = `materialized subselect`.`b2`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`) and (`materialized subselect`.`c1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`))) Note 1003 (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from <materialize> (select `test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0')) join `test`.`t3` where ((`materialized subselect`.`b2` = `test`.`t3`.`c2`) and (`materialized subselect`.`b1` = `test`.`t3`.`c1`))) join <materialize> (select `test`.`t2`.`b1` AS `b1`,`test`.`t2`.`b2` AS `b2` from `test`.`t2` where (<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` AS `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` = `materialized subselect`.`c2`))))) or <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (select `test`.`t3`.`c2` AS `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` = `materialized subselect`.`c2`)))))) group by `test`.`t2`.`b1`,`test`.`t2`.`b2`) join `test`.`t1` where ((`materialized subselect`.`c2` = `materialized subselect`.`b2`) and (`test`.`t1`.`a2` = `materialized subselect`.`b2`) and (`materialized subselect`.`c1` = `materialized subselect`.`b1`) and (`test`.`t1`.`a1` = `materialized subselect`.`b1`))) union (select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from <materialize> (select `test`.`t3i`.`c1` AS `c1`,`test`.`t3i`.`c2` AS `c2` from <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b2` > '0')) join `test`.`t3i` where ((`materialized subselect`.`b2` = `test`.`t3i`.`c2`) and (`materialized subselect`.`b1` = `test`.`t3i`.`c1`))) join <materialize> (select `test`.`t2i`.`b1` AS `b1`,`test`.`t2i`.`b2` AS `b2` from `test`.`t2i` where (`test`.`t2i`.`b1` > '0')) join `test`.`t1i` where ((`materialized subselect`.`c2` = `materialized subselect`.`b2`) and (`test`.`t1i`.`a2` = `materialized subselect`.`b2`) and (`materialized subselect`.`c1` = `materialized subselect`.`b1`) and (`test`.`t1i`.`a1` = `materialized subselect`.`b1`)))
(select * from t1 (select * from t1
......
mysql-test/t/subselect_mat.test
View file @ f46c5de0
...@@ -75,6 +75,7 @@ explain extended ...@@ -75,6 +75,7 @@ explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0'); select * from t1i where a1 in (select b1 from t2i where b1 > '0');
select * from t1i where a1 in (select b1 from t2i where b1 > '0'); select * from t1i where a1 in (select b1 from t2i where b1 > '0');
--replace_column 6 # 8 # 11 #
explain extended explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1); select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1); select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
...@@ -83,10 +84,12 @@ explain extended ...@@ -83,10 +84,12 @@ explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0'); select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0'); select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
--replace_column 6 # 7 # 8 # 11 #
explain extended explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2); select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2); select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
--replace_column 6 # 7 # 8 # 11 #
explain extended explain extended
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1); select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
...@@ -174,6 +177,7 @@ where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and ...@@ -174,6 +177,7 @@ where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and
(a1, a2) in (select c1, c2 from t3 (a1, a2) in (select c1, c2 from t3
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')); where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
--replace_column 6 # 7 # 8 # 11 #
explain extended explain extended
select * from t1i select * from t1i
where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
...@@ -215,6 +219,7 @@ where (a1, a2) in (select b1, b2 from t2 ...@@ -215,6 +219,7 @@ where (a1, a2) in (select b1, b2 from t2
# multiple levels of nesting subqueries, unions # multiple levels of nesting subqueries, unions
--replace_column 6 # 7 # 8 # 11 #
explain extended explain extended
(select * from t1 (select * from t1
where (a1, a2) in (select b1, b2 from t2 where (a1, a2) in (select b1, b2 from t2
......
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