| Current Path : /usr/opt/mysql57/mysql-test/r/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/opt/mysql57/mysql-test/r/subquery_mat_all.result |
set optimizer_switch='semijoin=on,materialization=on,firstmatch=on,loosescan=on,index_condition_pushdown=on,mrr=on';
set global innodb_large_prefix=off;
Warnings:
Warning 131 Using innodb_large_prefix is deprecated and the parameter may be removed in future releases. See http://dev.mysql.com/doc/refman/5.7/en/innodb-file-format.html
set @old_opt_switch=@@optimizer_switch;
set optimizer_switch='subquery_materialization_cost_based=off';
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
drop table if exists t1, t2, t3, t1i, t2i, t3i;
drop view if exists v1, v2, v1m, v2m;
create table t1 (a1 char(8), a2 char(8));
create table t2 (b1 char(8), b2 char(8));
create table t3 (c1 char(8), c2 char(8));
insert into t1 values ('1 - 00', '2 - 00');
insert into t1 values ('1 - 01', '2 - 01');
insert into t1 values ('1 - 02', '2 - 02');
insert into t2 values ('1 - 01', '2 - 01');
insert into t2 values ('1 - 01', '2 - 01');
insert into t2 values ('1 - 02', '2 - 02');
insert into t2 values ('1 - 02', '2 - 02');
insert into t2 values ('1 - 03', '2 - 03');
insert into t3 values ('1 - 01', '2 - 01');
insert into t3 values ('1 - 02', '2 - 02');
insert into t3 values ('1 - 03', '2 - 03');
insert into t3 values ('1 - 04', '2 - 04');
create table t1i (a1 char(8), a2 char(8));
create table t2i (b1 char(8), b2 char(8));
create table t3i (c1 char(8), c2 char(8));
create index it1i1 on t1i (a1);
create index it1i2 on t1i (a2);
create index it1i3 on t1i (a1, a2);
create index it2i1 on t2i (b1);
create index it2i2 on t2i (b2);
create index it2i3 on t2i (b1, b2);
create index it3i1 on t3i (c1);
create index it3i2 on t3i (c2);
create index it3i3 on t3i (c1, c2);
insert into t1i select * from t1;
insert into t2i select * from t2;
insert into t3i select * from t3;
/******************************************************************************
* Simple tests.
******************************************************************************/
# non-indexed nullable fields
explain extended
select * from t1 where a1 in (select b1 from t2 where b1 > '0');
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t1`.`a1` > '0'))
select * from t1 where a1 in (select b1 from t2 where b1 > '0');
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t1`.`a1` > '0'))
select * from t1 where a1 in (select b1 from t2 where b1 > '0' group by b1);
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 b1 > '0' group by b1, b2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t1`.`a1` > '0'))
select * from t1 where (a1, a2) in (select b1, b2 from t2 where b1 > '0' group by b1, b2);
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 5 33.33 Using where; Using temporary; Using filesort
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2`.`b1`,min(`test`.`t2`.`b2`) from `test`.`t2` where (`test`.`t2`.`b1` > '0') group by `test`.`t2`.`b1` having 1 ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on <auto_key> where ((`test`.`t1`.`a1` = `materialized-subquery`.`b1`) and (`test`.`t1`.`a2` = `materialized-subquery`.`min(b2)`)))))
select * from t1 where (a1, a2) in (select b1, min(b2) from t2 where b1 > '0' group by b1);
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0');
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2i NULL index it2i1,it2i3 it2i1 9 NULL 5 50.00 Using where; Using index; LooseScan
1 SIMPLE t1i NULL ref it1i1,it1i3 it1i1 9 test.t2i.b1 1 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0'))
select * from t1i where a1 in (select b1 from t2i where b1 > '0');
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2i NULL index it2i1,it2i3 it2i1 9 NULL 5 50.00 Using where; Using index; LooseScan
1 SIMPLE t1i NULL ref it1i1,it1i3 it1i1 9 test.t2i.b1 1 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0'))
select * from t1i where a1 in (select b1 from t2i where b1 > '0' group by b1);
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');
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2i NULL index it2i1,it2i2,it2i3 it2i3 18 NULL 5 50.00 Using where; Using index; LooseScan
1 SIMPLE t1i NULL ref it1i1,it1i2,it1i3 it1i1 9 test.t2i.b1 1 33.33 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a2` = `test`.`t2i`.`b2`) and (`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0'))
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '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' group by b1, b2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2i NULL index it2i1,it2i2,it2i3 it2i3 18 NULL 5 50.00 Using where; Using index; LooseScan
1 SIMPLE t1i NULL ref it1i1,it1i2,it1i3 it1i1 9 test.t2i.b1 1 33.33 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a2` = `test`.`t2i`.`b2`) and (`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0'))
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0' group by b1, b2);
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i NULL index NULL it1i3 18 NULL 3 100.00 Using where; Using index
2 SUBQUERY t2i NULL range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` having 1 ), <primary_index_lookup>(`test`.`t1i`.`a1` in <temporary table> on <auto_key> where ((`test`.`t1i`.`a1` = `materialized-subquery`.`b1`) and (`test`.`t1i`.`a2` = `materialized-subquery`.`min(b2)`)))))
select * from t1i where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2i NULL range it2i1,it2i3 it2i3 9 NULL 3 100.00 Using index for group-by
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1` having 1 ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on <auto_key> where ((`test`.`t1`.`a1` = `materialized-subquery`.`b1`) and (`test`.`t1`.`a2` = `materialized-subquery`.`max(b2)`)))))
select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1);
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
prepare st1 from "explain select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
execute st1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2i NULL range it2i1,it2i3 it2i3 9 NULL 3 100.00 Using index for group-by
Warnings:
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1` having 1 ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on <auto_key> where ((`test`.`t1`.`a1` = `materialized-subquery`.`b1`) and (`test`.`t1`.`a2` = `materialized-subquery`.`max(b2)`)))))
execute st1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2i NULL range it2i1,it2i3 it2i3 9 NULL 3 100.00 Using index for group-by
Warnings:
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2i`.`b1`,max(`test`.`t2i`.`b2`) from `test`.`t2i` group by `test`.`t2i`.`b1` having 1 ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on <auto_key> where ((`test`.`t1`.`a1` = `materialized-subquery`.`b1`) and (`test`.`t1`.`a2` = `materialized-subquery`.`max(b2)`)))))
prepare st2 from "select * from t1 where (a1, a2) in (select b1, max(b2) from t2i group by b1)";
execute st2;
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
execute st2;
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
2 SUBQUERY t2i NULL range it2i1,it2i3 it2i3 18 NULL 3 100.00 Using where; Using index for group-by
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2i`.`b1`,min(`test`.`t2i`.`b2`) from `test`.`t2i` where (`test`.`t2i`.`b1` > '0') group by `test`.`t2i`.`b1` having 1 ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on <auto_key> where ((`test`.`t1`.`a1` = `materialized-subquery`.`b1`) and (`test`.`t1`.`a2` = `materialized-subquery`.`min(b2)`)))))
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i where b1 > '0' group by b1);
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
select * from t1 where (a1, a2) in (select b1, min(b2) from t2i limit 1,1);
ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
explain extended
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`))
select * from t1 where (a1, a2) in (select b1, b2 from t2 order by b1, b2);
a1 a2
1 - 01 2 - 01
1 - 02 2 - 02
explain extended
select * from t1i where (a1, a2) in (select b1, b2 from t2i order by b1, b2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2i NULL index it2i1,it2i2,it2i3 it2i3 18 NULL 5 50.00 Using where; Using index; LooseScan
1 SIMPLE t1i NULL ref it1i1,it1i2,it1i3 it1i1 9 test.t2i.b1 1 33.33 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a2` = `test`.`t2i`.`b2`) and (`test`.`t1i`.`a1` = `test`.`t2i`.`b1`))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 5 33.33 Using where; Start temporary
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 33.33 Using where; End temporary; Using join buffer (Block Nested Loop)
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
1 SIMPLE t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t2.b1,test.t2.b2 2 100.00 Using index; FirstMatch(t1)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3`) semi join (`test`.`t2`) where ((`test`.`t1`.`a2` = `test`.`t2`.`b2`) and (`test`.`t3`.`c2` = `test`.`t2`.`b2`) and (`test`.`t2i`.`b2` = `test`.`t2`.`b2`) and (`test`.`t1`.`a1` = `test`.`t2`.`b1`) and (`test`.`t3`.`c1` = `test`.`t2`.`b1`) and (`test`.`t2i`.`b1` = `test`.`t2`.`b1`) and (`test`.`t2`.`b2` > '0') and (`test`.`t2`.`b1` > '0'))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2i NULL index it2i1,it2i2,it2i3 it2i3 18 NULL 5 50.00 Using where; Using index; LooseScan
1 SIMPLE t1i NULL ref it1i1,it1i2,it1i3 it1i1 9 test.t2i.b1 1 100.00 Using where
1 SIMPLE t3i NULL ref it3i1,it3i2,it3i3 it3i1 9 test.t2i.b1 1 100.00 Using where
1 SIMPLE t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t2i.b1,test.t2i.b2 2 100.00 Using index; FirstMatch(t1i)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i` join `test`.`t3i`) semi join (`test`.`t2i`) where ((`test`.`t1i`.`a2` = `test`.`t2i`.`b2`) and (`test`.`t3i`.`c2` = `test`.`t2i`.`b2`) and (`test`.`t2i`.`b2` = `test`.`t2i`.`b2`) and (`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t3i`.`c1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b2` > '0') and (`test`.`t2i`.`b1` > '0'))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t1.a2 2 100.00 Using index; End temporary
4 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
3 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3`) semi join (`test`.`t2`) where ((`test`.`t3`.`c2` = `test`.`t1`.`a2`) and (`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2i`.`b2` = `test`.`t1`.`a2`) and (`test`.`t3`.`c1` = `test`.`t1`.`a1`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t1`.`a1`) and (`test`.`t1`.`a2` > '0') and (<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#3 */ select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on <auto_key> where ((`test`.`t2`.`b2` = `materialized-subquery`.`c2`))))) or <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on <auto_key> where ((`test`.`t2`.`b2` = `materialized-subquery`.`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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t3c NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t1.a2 2 100.00 Using index; End temporary
4 SUBQUERY t3b NULL ALL NULL NULL NULL NULL 4 25.00 Using where
3 DEPENDENT SUBQUERY t3a NULL ALL NULL NULL NULL NULL 4 25.00 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3` `t3c`) where ((`test`.`t3c`.`c2` = `test`.`t1`.`a2`) and (`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2i`.`b2` = `test`.`t1`.`a2`) and (`test`.`t3c`.`c1` = `test`.`t1`.`a1`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t1`.`a1`) and (<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select 1 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#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on <auto_key> where ((`test`.`t2`.`b2` = `materialized-subquery`.`c2`)))))) and (`test`.`t1`.`a2` > '0'))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t1.a2 2 100.00 Using index; End temporary
4 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
3 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
7 UNION t2i NULL index it2i1,it2i2,it2i3 it2i3 18 NULL 5 50.00 Using where; Using index; LooseScan
7 UNION t1i NULL ref it1i1,it1i2,it1i3 it1i1 9 test.t2i.b1 1 100.00 Using where
7 UNION t3i NULL ref it3i1,it3i2,it3i3 it3i1 9 test.t2i.b1 1 100.00 Using where
7 UNION t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t2i.b1,test.t2i.b2 2 100.00 Using index; FirstMatch(t1i)
NULL UNION RESULT <union1,7> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 (/* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3`) semi join (`test`.`t2`) where ((`test`.`t3`.`c2` = `test`.`t1`.`a2`) and (`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2i`.`b2` = `test`.`t1`.`a2`) and (`test`.`t3`.`c1` = `test`.`t1`.`a1`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t1`.`a1`) and (`test`.`t1`.`a2` > '0') and (<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#3 */ select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%02') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on <auto_key> where ((`test`.`t2`.`b2` = `materialized-subquery`.`c2`))))) or <in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3`.`c2` from `test`.`t3` where (`test`.`t3`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on <auto_key> where ((`test`.`t2`.`b2` = `materialized-subquery`.`c2`)))))))) union (/* select#7 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i` join `test`.`t3i`) semi join (`test`.`t2i`) where ((`test`.`t1i`.`a2` = `test`.`t2i`.`b2`) and (`test`.`t3i`.`c2` = `test`.`t2i`.`b2`) and (`test`.`t2i`.`b2` = `test`.`t2i`.`b2`) and (`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t3i`.`c1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b2` > '0') and (`test`.`t2i`.`b1` > '0')))
(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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t1.a2 2 100.00 Using index; End temporary
2 DEPENDENT SUBQUERY t1 NULL ALL NULL NULL NULL NULL 3 33.33 Using where
3 DEPENDENT UNION t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3`) where ((`test`.`t3`.`c2` = `test`.`t1`.`a2`) and (`test`.`t2i`.`b2` = `test`.`t1`.`a2`) and (`test`.`t3`.`c1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t1`.`a1`) and <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select 1,1 from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union /* select#3 */ select 1,1 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 (`test`.`t1`.`a2` > '0'))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t3.c2 2 100.00 Using index; End temporary
2 DEPENDENT SUBQUERY t1 NULL ALL NULL NULL NULL NULL 3 33.33 Using where
3 DEPENDENT UNION t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2`,`test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3`) join `test`.`t3` where ((`test`.`t3`.`c2` = `test`.`t3`.`c2`) and (`test`.`t2i`.`b2` = `test`.`t3`.`c2`) and (`test`.`t3`.`c1` = `test`.`t1`.`a1`) and (`test`.`t3`.`c1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t1`.`a1`) and <in_optimizer>((`test`.`t1`.`a1`,`test`.`t1`.`a2`),<exists>(/* select#2 */ select 1,1 from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t1`.`a1`) = `test`.`t1`.`a1`) and (<cache>(`test`.`t1`.`a2`) = `test`.`t1`.`a2`)) union /* select#3 */ select 1,1 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 (`test`.`t3`.`c2` > '0'))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 NULL ALL NULL NULL NULL NULL 4 100.00 Using where
2 DEPENDENT SUBQUERY t1 NULL ALL NULL NULL NULL NULL 3 33.33 Using where
3 DEPENDENT UNION t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t3`.`c1` AS `c1`,`test`.`t3`.`c2` AS `c2` from `test`.`t3` where <in_optimizer>(`test`.`t3`.`c1`,<exists>(/* select#2 */ select 1 from `test`.`t1` where ((`test`.`t1`.`a1` > '0') and (<cache>(`test`.`t3`.`c1`) = `test`.`t1`.`a1`)) union /* select#3 */ select 1 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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t3c NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 5 20.00 Using where; Using join buffer (Block Nested Loop)
1 PRIMARY t2i NULL ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t1.a2 2 100.00 Using index; End temporary
4 SUBQUERY t3b NULL ALL NULL NULL NULL NULL 4 25.00 Using where
3 DEPENDENT SUBQUERY t3a NULL ALL NULL NULL NULL NULL 4 25.00 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
Note 1276 Field or reference 'test.t1.a2' of SELECT #6 was resolved in SELECT #1
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2i` join `test`.`t3` `t3c`) semi join (`test`.`t2`) where ((`test`.`t3c`.`c2` = `test`.`t1`.`a2`) and (`test`.`t2`.`b2` = `test`.`t1`.`a2`) and (`test`.`t2i`.`b2` = `test`.`t1`.`a2`) and (`test`.`t3c`.`c1` = `test`.`t1`.`a1`) and (`test`.`t2`.`b1` = `test`.`t1`.`a1`) and (`test`.`t2i`.`b1` = `test`.`t1`.`a1`) and (<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select 1 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#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where (`test`.`t3b`.`c2` like '%03') ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on <auto_key> where ((`test`.`t2`.`b2` = `materialized-subquery`.`c2`)))))))
explain extended
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select '1 - 01','2 - 01' having ((<cache>(`test`.`t1`.`a1`) = '1 - 01') and (<cache>(`test`.`t1`.`a2`) = '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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select '1 - 01','2 - 01' having ((<cache>(`test`.`t1`.`a1`) = '1 - 01') and (<cache>(`test`.`t1`.`a2`) = '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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
2 SUBQUERY columns NULL index NULL PRIMARY 4 NULL 2 100.00 Using index
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` group by (/* select#2 */ select `test`.`columns`.`col` from `test`.`columns` limit 1)
select * from t1 group by (select col from columns limit 1);
a1 a2
1 - 00 2 - 00
explain extended
select * from t1 group by (a1 in (select col from columns));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using temporary; Using filesort
2 DEPENDENT SUBQUERY columns NULL unique_subquery PRIMARY PRIMARY 4 func 1 100.00 Using where; Using index; Full scan on NULL key
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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 <if>(outer_field_is_not_null, (<cache>(`test`.`t1`.`a1`) = `test`.`columns`.`col`), true))))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
2 SUBQUERY columns NULL index NULL PRIMARY 4 NULL 2 100.00 Using index
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` order by (/* select#2 */ select `test`.`columns`.`col` from `test`.`columns` limit 1)
select * from t1 order by (select col from columns limit 1);
a1 a2
1 - 00 2 - 00
1 - 01 2 - 01
1 - 02 2 - 02
/******************************************************************************
* Column types/sizes that affect materialization.
******************************************************************************/
# test for BIT fields
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1bit NULL ALL NULL NULL NULL NULL 3 100.00 NULL
1 SIMPLE t2bit NULL ALL NULL NULL NULL NULL 3 33.33 Using where; FirstMatch(t1bit); Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select conv(`test`.`t1bit`.`a1`,10,2) AS `bin(a1)`,conv(`test`.`t1bit`.`a2`,10,2) AS `bin(a2)` from `test`.`t1bit` semi join (`test`.`t2bit`) where ((`test`.`t2bit`.`b2` = `test`.`t1bit`.`a2`) and (`test`.`t2bit`.`b1` = `test`.`t1bit`.`a1`))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1bb NULL ALL NULL NULL NULL NULL 3 100.00 NULL
1 SIMPLE t2bb NULL ALL NULL NULL NULL NULL 3 33.33 Using where; FirstMatch(t1bb); Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select conv(`test`.`t1bb`.`a1`,10,2) AS `bin(a1)`,`test`.`t1bb`.`a2` AS `a2` from `test`.`t1bb` semi join (`test`.`t2bb`) where ((`test`.`t2bb`.`b2` = `test`.`t1bb`.`a2`) and (`test`.`t2bb`.`b1` = `test`.`t1bb`.`a1`))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Start temporary
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 7 14.29 Using where; End temporary; Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and (`test`.`t2`.`d` >= 20))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE <subquery2> NULL ALL NULL NULL NULL NULL NULL 100.00 NULL
1 SIMPLE t1 NULL ref it1a it1a 4 <subquery2>.c 2 100.00 Using index
2 MATERIALIZED t2 NULL ALL NULL NULL NULL NULL 6 33.33 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `<subquery2>`.`c`) and (`test`.`t2`.`d` >= 20))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE <subquery2> NULL ALL NULL NULL NULL NULL NULL 100.00 NULL
1 SIMPLE t1 NULL ref it1a it1a 4 <subquery2>.c 2 100.00 Using index
2 MATERIALIZED t2 NULL ALL NULL NULL NULL NULL 7 33.33 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `<subquery2>`.`c`) and (`test`.`t2`.`d` >= 20))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL index it1a it1a 4 NULL 7 100.00 Using index
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 7 33.33 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL index it1a,iab it1a 4 NULL 7 100.00 Using index
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 7 33.33 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ 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#2 */ select `test`.`t2`.`c` from `test`.`t2` where (`test`.`t2`.`d` >= 20) ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL index it1a,iab iab 8 NULL 7 100.00 Using index
2 DEPENDENT SUBQUERY t2 NULL ALL NULL NULL NULL NULL 7 14.29 Using where
3 DEPENDENT SUBQUERY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` group by `test`.`t1`.`a` having <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 1 from `test`.`t2` where (<nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(/* select#3 */ select 1 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 partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 7 100.00 Start temporary
1 PRIMARY t1 NULL ref it1a,iab iab 4 test.t2.c 2 100.00 Using where; Using index; End temporary
3 DEPENDENT SUBQUERY t3 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1276 Field or reference 'test.t1.b' of SELECT #3 was resolved in SELECT #1
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` = `test`.`t2`.`c`) and <nop>(<in_optimizer>(`test`.`t2`.`d`,<exists>(/* select#3 */ select 1 from `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`e`) and (<cache>(`test`.`t2`.`d`) >= `test`.`t3`.`e`))))))
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 0 0.00 Using where; FirstMatch(t1)
Warnings:
Note 1003 /* select#1 */ select min('5') AS `min(a1)` from (`test`.`t2`) where (`test`.`t2`.`b1` = 7)
select min(a1) from t1 where 7 in (select b1 from t2 group by b1);
min(a1)
NULL
explain select min(a1) from t1 where 7 in (select b1 from t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 0 0.00 Using where; FirstMatch(t1)
Warnings:
Note 1003 /* select#1 */ select min('5') AS `min(a1)` from (`test`.`t2`) where (`test`.`t2`.`b1` = 7)
select min(a1) from t1 where 7 in (select b1 from t2);
min(a1)
NULL
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 partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join (`test`.`t1`) where (`test`.`t1`.`b` = `test`.`t1`.`a`)
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 (a varchar(5), b varchar(10));
INSERT INTO t1 VALUES
('AAA', 5), ('BBB', 4), ('BBB', 1), ('CCC', 2),
('CCC', 7), ('AAA', 2), ('AAA', 4), ('BBB', 3), ('AAA', 8);
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
BBB 4
CCC 7
AAA 8
EXPLAIN
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using where
2 SUBQUERY t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using temporary; Using filesort
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`b`),(`test`.`t1`.`a`,`test`.`t1`.`b`) in ( <materialize> (/* select#2 */ select `test`.`t1`.`a`,max(`test`.`t1`.`b`) from `test`.`t1` group by `test`.`t1`.`a` having 1 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`) and (`test`.`t1`.`b` = `materialized-subquery`.`max(b)`)))))
ALTER TABLE t1 ADD INDEX(a);
FLUSH STATUS;
SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
a b
BBB 4
CCC 7
AAA 8
SHOW SESSION STATUS LIKE 'Sort_scan%';
Variable_name Value
Sort_scan 1
EXPLAIN SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using where
2 SUBQUERY t1 NULL ALL a NULL NULL NULL 9 100.00 Using temporary; Using filesort
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`b`),(`test`.`t1`.`a`,`test`.`t1`.`b`) in ( <materialize> (/* select#2 */ select `test`.`t1`.`a`,max(`test`.`t1`.`b`) from `test`.`t1` group by `test`.`t1`.`a` having 1 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`) and (`test`.`t1`.`b` = `materialized-subquery`.`max(b)`)))))
DROP TABLE t1;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2);
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 FirstMatch
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select 1 AS `1` from `test`.`t1` semi join (`test`.`t1`) where 1
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select 1 AS `1` from `test`.`t1` semi join (`test`.`t1`) where (`test`.`t1`.`a` > 3)
DROP TABLE t1;
#
# BUG#49630: Segfault in select_describe() with double
# nested subquery and materialization
#
CREATE TABLE t1 (t1i int);
CREATE TABLE t2 (t2i int);
CREATE TABLE t3 (t3i int);
CREATE TABLE t4 (t4i int);
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1),(2);
INSERT INTO t3 VALUES (1),(2);
INSERT INTO t4 VALUES (1),(2);
EXPLAIN
SELECT t1i
FROM t1 JOIN t4 ON t1i=t4i
WHERE (t1i) IN (
SELECT t2i
FROM t2
WHERE (t2i) IN (
SELECT t3i
FROM t3
GROUP BY t3i
)
);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 SIMPLE t4 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch(t4)
Warnings:
Note 1003 /* select#1 */ select '1' AS `t1i` from `test`.`t4` semi join (`test`.`t3` join `test`.`t2`) where ((`test`.`t4`.`t4i` = '1') and (`test`.`t2`.`t2i` = '1') and (`test`.`t3`.`t3i` = '1'))
DROP TABLE t1,t2,t3,t4;
#
# BUG#46680 - Assertion failed in file item_subselect.cc,
# line 305 crashing on HAVING subquery
#
# Create tables
#
CREATE TABLE t1 (
pk INT,
v VARCHAR(1) DEFAULT NULL,
PRIMARY KEY(pk)
);
CREATE TABLE t2 LIKE t1;
CREATE TABLE t3 LIKE t1;
CREATE TABLE empty1 (a int);
INSERT INTO t1 VALUES (1,'c'),(2,NULL);
INSERT INTO t2 VALUES (3,'m'),(4,NULL);
INSERT INTO t3 VALUES (1,'n');
#
# 1) Test that subquery materialization is setup for query with
# premature optimize() exit due to "Impossible WHERE"
#
SELECT MIN(t2.pk)
FROM t2 JOIN t1 ON t1.pk=t2.pk
WHERE 'j'
HAVING ('m') IN (
SELECT v
FROM t2);
MIN(t2.pk)
NULL
Warnings:
Warning 1292 Truncated incorrect INTEGER value: 'j'
EXPLAIN
SELECT MIN(t2.pk)
FROM t2 JOIN t1 ON t1.pk=t2.pk
WHERE 'j'
HAVING ('m') IN (
SELECT v
FROM t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
Warnings:
Warning 1292 Truncated incorrect INTEGER value: 'j'
Note 1003 /* select#1 */ select min(`test`.`t2`.`pk`) AS `MIN(t2.pk)` from `test`.`t2` join `test`.`t1` where 0 having <in_optimizer>('m','m' in ( <materialize> (/* select#2 */ select `test`.`t2`.`v` from `test`.`t2` where (`test`.`t2`.`v` = <cache>('m')) ), <primary_index_lookup>('m' in <temporary table> on <auto_key> where (('m' = `materialized-subquery`.`v`)))))
#
# 2) Test that subquery materialization is setup for query with
# premature optimize() exit due to "No matching min/max row"
#
SELECT MIN(t2.pk)
FROM t2
WHERE t2.pk>10
HAVING ('m') IN (
SELECT v
FROM t2);
MIN(t2.pk)
NULL
EXPLAIN
SELECT MIN(t2.pk)
FROM t2
WHERE t2.pk>10
HAVING ('m') IN (
SELECT v
FROM t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No matching min/max row
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t2`.`pk`) AS `MIN(t2.pk)` from `test`.`t2` where (`test`.`t2`.`pk` > 10) having <in_optimizer>('m','m' in ( <materialize> (/* select#2 */ select `test`.`t2`.`v` from `test`.`t2` where (`test`.`t2`.`v` = <cache>('m')) ), <primary_index_lookup>('m' in <temporary table> on <auto_key> where (('m' = `materialized-subquery`.`v`)))))
#
# 3) Test that subquery materialization is setup for query with
# premature optimize() exit due to "Select tables optimized away"
#
SELECT MIN(pk)
FROM t1
WHERE pk=NULL
HAVING ('m') IN (
SELECT v
FROM t2);
MIN(pk)
NULL
EXPLAIN
SELECT MIN(pk)
FROM t1
WHERE pk=NULL
HAVING ('m') IN (
SELECT v
FROM t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`pk`) AS `MIN(pk)` from `test`.`t1` where (`test`.`t1`.`pk` = NULL) having <in_optimizer>('m','m' in ( <materialize> (/* select#2 */ select `test`.`t2`.`v` from `test`.`t2` where (`test`.`t2`.`v` = <cache>('m')) ), <primary_index_lookup>('m' in <temporary table> on <auto_key> where (('m' = `materialized-subquery`.`v`)))))
#
# 4) Test that subquery materialization is setup for query with
# premature optimize() exit due to "No matching row in const table"
#
SELECT MIN(a)
FROM (SELECT a FROM empty1) tt
HAVING ('m') IN (
SELECT v
FROM t2);
MIN(a)
NULL
EXPLAIN
SELECT MIN(a)
FROM (SELECT a FROM empty1) tt
HAVING ('m') IN (
SELECT v
FROM t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
3 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
Warnings:
Note 1003 /* select#1 */ select min(NULL) AS `MIN(a)` from `test`.`empty1` having <in_optimizer>('m','m' in ( <materialize> (/* select#3 */ select `test`.`t2`.`v` from `test`.`t2` where (`test`.`t2`.`v` = <cache>('m')) ), <primary_index_lookup>('m' in <temporary table> on <auto_key> where (('m' = `materialized-subquery`.`v`)))))
#
# 5) Test that subquery materialization is setup for query with
# premature optimize() exit due to "Impossible WHERE noticed
# after reading const tables"
#
SELECT min(t1.pk)
FROM t1
WHERE t1.pk IN (SELECT 1 from t3 where pk>10)
HAVING ('m') IN (
SELECT v
FROM t2);
min(t1.pk)
NULL
EXPLAIN
SELECT min(t1.pk)
FROM t1
WHERE t1.pk IN (SELECT 1 from t3 where pk>10)
HAVING ('m') IN (
SELECT v
FROM t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 Using index
1 PRIMARY t3 NULL index PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using index; FirstMatch(t1)
3 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
Warnings:
Note 1003 /* select#1 */ select min('1') AS `min(t1.pk)` from `test`.`t1` semi join (`test`.`t3`) where ((`test`.`t3`.`pk` > 10)) having 1
#
# Cleanup for BUG#46680
#
DROP TABLE IF EXISTS t1,t2,t3,empty1;
#
# BUG#52344 - Subquery materialization:
# Assertion if subquery in on-clause of outer join
#
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, j FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 0 0.00 Using where; Start temporary
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 1 100.00 Using where; End temporary
Warnings:
Note 1003 /* select#1 */ select '10' AS `i`,`test`.`t2`.`j` AS `j` from (`test`.`t2` semi join (`test`.`t3`)) where 1
SELECT i, j FROM t1 LEFT JOIN t2 ON (j) IN (SELECT k FROM t3);
i j
10 NULL
EXPLAIN
SELECT i, j FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 PRIMARY t2 NULL system NULL NULL NULL NULL 1 100.00 NULL
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select '10' AS `i`,NULL AS `j` from `test`.`t2` where 1
SELECT i, j FROM t1 LEFT JOIN t2 ON (j) IN (SELECT max(k) FROM t3);
i j
10 NULL
DROP TABLE t1, t2, t3;
# End BUG#52344
CREATE TABLE t1 (
pk INTEGER AUTO_INCREMENT,
col_int_nokey INTEGER,
col_int_key INTEGER,
col_varchar_key VARCHAR(1),
PRIMARY KEY (pk),
KEY (col_int_key),
KEY (col_varchar_key, col_int_key)
)
;
INSERT INTO t1 (
col_int_key, col_int_nokey, col_varchar_key
)
VALUES
(2, NULL, 'w'),
(9, 7, 'm'),
(3, 9, 'm'),
(9, 7, 'k'),
(NULL, 4, 'r'),
(9, 2, 't'),
(3, 6, 'j'),
(8, 8, 'u'),
(8, NULL, 'h'),
(53, 5, 'o'),
(0, NULL, NULL),
(5, 6, 'k'),
(166, 188, 'e'),
(3, 2, 'n'),
(0, 1, 't'),
(1, 1, 'c'),
(9, 0, 'm'),
(5, 9, 'y'),
(6, NULL, 'f'),
(2, 4, 'd')
;
SELECT table2.col_varchar_key AS field1,
table2.col_int_nokey AS field2
FROM ( t1 AS table1 LEFT OUTER JOIN t1 AS table2
ON (table2.col_varchar_key = table1.col_varchar_key ) )
WHERE table1.pk = 6
HAVING ( field2 ) IN
( SELECT SUBQUERY2_t2.col_int_nokey AS SUBQUERY2_field2
FROM ( t1 AS SUBQUERY2_t1 JOIN t1 AS SUBQUERY2_t2
ON (SUBQUERY2_t2.col_varchar_key = SUBQUERY2_t1.col_varchar_key ) ) )
ORDER BY field2
;
field1 field2
t 1
t 2
drop table t1;
#
# BUG#53103: MTR test ps crashes in optimize_cond()
# when running with --debug
#
CREATE TABLE t1(track varchar(15));
INSERT INTO t1 VALUES ('CAD'), ('CAD');
PREPARE STMT FROM
"SELECT 1 FROM t1
WHERE
track IN (SELECT track FROM t1
GROUP BY track
HAVING track>='CAD')";
EXECUTE STMT ;
1
1
1
EXECUTE STMT ;
1
1
1
DEALLOCATE PREPARE STMT;
DROP TABLE t1;
# End of BUG#53103
#
# BUG#54511 - Assertion failed: cache != 0L in file
# sql_select.cc::sub_select_cache on HAVING
#
CREATE TABLE t1 (i int(11));
CREATE TABLE t2 (c char(1));
CREATE TABLE t3 (c char(1));
INSERT INTO t1 VALUES (1), (2);
INSERT INTO t2 VALUES ('a'), ('b');
INSERT INTO t3 VALUES ('x'), ('y');
SELECT COUNT( i ),i
FROM t1
HAVING ('c')
IN (SELECT t2.c FROM (t2 JOIN t3));
COUNT( i ) i
DROP TABLE t1,t2,t3;
# End BUG#54511
#
# BUG#56367 - Assertion exec_method != EXEC_MATERIALIZATION...
# on subquery in FROM
#
CREATE TABLE t1 (a INTEGER);
CREATE TABLE t2 (b INTEGER);
INSERT INTO t2 VALUES (1);
explain SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select NULL AS `a` from `test`.`t1` left join `test`.`t2` on(((NULL > 3) or <in_optimizer>(NULL,<exists>(/* select#3 */ select 1 from `test`.`t1` where (<cache>(NULL) = NULL)))))
SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1;
a
DROP TABLE t1, t2;
# End BUG#56367
#
# Bug#59833 - materialization=on/off leads to different result set
# when using IN
#
CREATE TABLE t1 (
pk int NOT NULL,
f1 int DEFAULT NULL,
PRIMARY KEY (pk)
) ENGINE=MyISAM;
CREATE TABLE t2 (
pk int NOT NULL,
f1 int DEFAULT NULL,
PRIMARY KEY (pk)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (10,0);
INSERT INTO t2 VALUES (10,0),(11,0);
explain SELECT * FROM t1 JOIN t2 USING (f1)
WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
Warnings:
Note 1003 /* select#1 */ select '0' AS `f1`,'10' AS `pk`,`test`.`t2`.`pk` AS `pk` from `test`.`t2` where 0
SELECT * FROM t1 JOIN t2 USING (f1)
WHERE t1.f1 IN (SELECT t1.pk FROM t1 ORDER BY t1.f1);
f1 pk pk
DROP TABLE t1, t2;
# End Bug#59833
#
# Bug#11852644 - CRASH IN ITEM_REF::SAVE_IN_FIELD ON SELECT DISTINCT
#
CREATE TABLE t1 (
col_varchar_key varchar(1) DEFAULT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
KEY col_varchar_key (col_varchar_key))
;
INSERT INTO t1 VALUES
('v','v'),('r','r');
CREATE TABLE t2 (
col_varchar_key varchar(1) DEFAULT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
KEY col_varchar_key(col_varchar_key))
;
INSERT INTO t2 VALUES
('r','r'),('c','c');
CREATE VIEW v3 AS SELECT * FROM t2;
SELECT DISTINCT alias2.col_varchar_key
FROM t1 AS alias1 JOIN v3 AS alias2
ON alias2.col_varchar_key = alias1.col_varchar_key
HAVING col_varchar_key IN (SELECT col_varchar_nokey FROM t2)
;
col_varchar_key
r
DROP TABLE t1, t2;
DROP VIEW v3;
# End Bug#11852644
# Bug#12668294 - GROUP BY ON EMPTY RESULT GIVES EMPTY ROW
# INSTEAD OF NULL WHEN MATERIALIZATION ON
CREATE TABLE t1 (col_int_nokey INT) ENGINE=MEMORY;
CREATE TABLE t2 (col_int_nokey INT) ENGINE=MEMORY;
INSERT INTO t2 VALUES (8),(7);
CREATE TABLE t3 (col_int_nokey INT) ENGINE=MEMORY;
INSERT INTO t3 VALUES (7);
SELECT MIN(t3.col_int_nokey),t1.col_int_nokey AS field3
FROM t3
LEFT JOIN t1
ON t1.col_int_nokey
WHERE (194, 200) IN (
SELECT SQ4_alias1.col_int_nokey,
SQ4_alias2.col_int_nokey
FROM t2 AS SQ4_alias1
JOIN
t2 AS SQ4_alias2
ON SQ4_alias2.col_int_nokey = 5
)
GROUP BY field3 ;
MIN(t3.col_int_nokey) field3
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
#
# Bug#13419028 - SUBQUERY MATERIALIZATION NOT USED IN CREATE
# SELECT
#
CREATE TABLE t1(a int);
INSERT INTO t1 values(1),(2);
CREATE TABLE t2(a int);
INSERT INTO t2 values(1),(2);
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT * FROM t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where (`test`.`t2`.`a` = `test`.`t1`.`a`)
FLUSH STATUS;
SELECT * FROM t1 WHERE a IN (SELECT * FROM t2);
a
1
2
CREATE TABLE t3 SELECT * FROM t1 WHERE a IN (SELECT * FROM t2);
SELECT * FROM t3;
a
1
2
SHOW STATUS LIKE "CREATED_TMP_TABLES";
Variable_name Value
Created_tmp_tables 0
DROP TABLE t1,t2,t3;
#
# Bug#13552968: Extra row with materialization on join + subquery in
#
CREATE TABLE t1 (
col_varchar_nokey varchar(1) NOT NULL
) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('b');
CREATE TABLE t2 (
col_varchar_nokey varchar(1) NOT NULL
) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('k');
CREATE TABLE t3 (
col_varchar_nokey varchar(1) NOT NULL
) ENGINE=MyISAM;
explain SELECT STRAIGHT_JOIN *
FROM t1 LEFT JOIN t2 ON t1.col_varchar_nokey IN (SELECT col_varchar_nokey
FROM t3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 PRIMARY t2 NULL system NULL NULL NULL NULL 1 100.00 NULL
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select straight_join 'b' AS `col_varchar_nokey`,NULL AS `col_varchar_nokey` from `test`.`t2` where 1
SELECT STRAIGHT_JOIN *
FROM t1 LEFT JOIN t2 ON t1.col_varchar_nokey IN (SELECT col_varchar_nokey
FROM t3);
col_varchar_nokey col_varchar_nokey
b NULL
DROP TABLE t1, t2, t3;
# End of test for bug#13552968
#
# Bug#13591383: Assertion !(*tab->on_expr_ref && .. && is_expensive())
# in join_read_const_table()
#
CREATE TABLE t1 (v INTEGER) ENGINE=MyISAM;
INSERT INTO t1 VALUES(1);
CREATE TABLE t2 (v INTEGER) ENGINE=MyISAM;
SELECT *
FROM t1 LEFT JOIN t2
ON t2.v IN(SELECT v FROM t1);
v v
1 NULL
DROP TABLE t1, t2;
# End of test for bug#13591383.
#
# Bug#13607423: Assertion !(*tab->on_expr_ref->is_expensive())
# in join_read_const_table()
#
CREATE TABLE t1 (
pk int NOT NULL,
col_int_nokey int DEFAULT NULL,
col_int_key int DEFAULT NULL,
PRIMARY KEY (pk),
KEY col_int_key (col_int_key)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,2,4), (2,150,62);
CREATE TABLE t2 (
pk int NOT NULL,
col_int_key int DEFAULT NULL,
PRIMARY KEY (pk)
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,7);
explain SELECT table1.pk, table2.pk
FROM t2 AS table1 LEFT JOIN t2 AS table2
ON table2.pk = table1.pk AND
table2.col_int_key IN
(SELECT col_int_key
FROM t1 AS innr
WHERE innr.col_int_nokey > innr.col_int_nokey
GROUP BY col_int_key
HAVING COUNT(*) > 0
);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY table1 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 PRIMARY table2 NULL system PRIMARY NULL NULL NULL 1 100.00 NULL
2 DEPENDENT SUBQUERY innr NULL ALL col_int_key NULL NULL NULL 2 50.00 Using where; Using temporary; Using filesort
Warnings:
Note 1003 /* select#1 */ select '1' AS `pk`,NULL AS `pk` from `test`.`t2` `table2` where 1
FLUSH STATUS;
SELECT table1.pk, table2.pk
FROM t2 AS table1 LEFT JOIN t2 AS table2
ON table2.pk = table1.pk AND
table2.col_int_key IN
(SELECT col_int_key
FROM t1 AS innr
WHERE innr.col_int_nokey > innr.col_int_nokey
GROUP BY col_int_key
HAVING COUNT(*) > 0
);
pk pk
1 NULL
SHOW SESSION STATUS LIKE 'Sort_scan%';
Variable_name Value
Sort_scan 1
DROP TABLE t1, t2;
# End of test for bug#13607423.
Test of WL#6094 "Allow subquery materialization in NOT IN if all
columns are not nullable"
create table t1(a int not null);
create table t2(a int not null);
insert into t1 values(1),(2);
insert into t2 values(1),(2);
Test in SELECT list
cols not nullable => subq materialization
explain extended select a, (a,a) in (select a,a from t2) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,<in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`a`),(`test`.`t1`.`a`,`test`.`t1`.`a`) in ( <materialize> (/* select#2 */ select `test`.`t2`.`a`,`test`.`t2`.`a` from `test`.`t2` where 1 having 1 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`) and (`test`.`t1`.`a` = `materialized-subquery`.`a`))))) AS `(a,a) in (select a,a from t2)` from `test`.`t1`
select a, (a,a) in (select a,a from t2) from t1;
a (a,a) in (select a,a from t2)
1 1
2 1
cols not nullable => subq materialization
explain extended select t1.a, t2.a, (t1.a,t1.a) in (select a,a from t2 as t3)
from t1 join t2 on t1.a+t2.a=1000;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (Block Nested Loop)
2 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,<in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`a`),(`test`.`t1`.`a`,`test`.`t1`.`a`) in ( <materialize> (/* select#2 */ select `test`.`t3`.`a`,`test`.`t3`.`a` from `test`.`t2` `t3` where 1 having 1 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`) and (`test`.`t1`.`a` = `materialized-subquery`.`a`))))) AS `(t1.a,t1.a) in (select a,a from t2 as t3)` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a` + `test`.`t2`.`a`) = 1000)
select t1.a, t2.a, (t1.a,t1.a) in (select a,a from t2 as t3)
from t1 join t2 on t1.a+t2.a=1000;
a a (t1.a,t1.a) in (select a,a from t2 as t3)
t2.a is not nullable, but in the query it may appear as NULL
as it's in an outer join. So, no materialization.
explain extended select t1.a, t2.a, (t2.a,t2.a) in (select a,a from t2 as t3)
from t1 left join t2 on t1.a+t2.a=1000;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (Block Nested Loop)
2 DEPENDENT SUBQUERY t3 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`a`),<exists>(/* select#2 */ select 1,1 from `test`.`t2` `t3` where (<if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`a`) = `test`.`t3`.`a`) or <cache>(isnull(`test`.`t3`.`a`))), true) and <if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`a`) = `test`.`t3`.`a`) or <cache>(isnull(`test`.`t3`.`a`))), true)) having (<if>(outer_field_is_not_null, <is_not_null_test>(`test`.`t3`.`a`), true) and <if>(outer_field_is_not_null, <is_not_null_test>(`test`.`t3`.`a`), true)))) AS `(t2.a,t2.a) in (select a,a from t2 as t3)` from `test`.`t1` left join `test`.`t2` on(((`test`.`t1`.`a` + `test`.`t2`.`a`) = 1000)) where 1
select t1.a, t2.a, (t2.a,t2.a) in (select a,a from t2 as t3)
from t1 left join t2 on t1.a+t2.a=1000;
a a (t2.a,t2.a) in (select a,a from t2 as t3)
1 NULL NULL
2 NULL NULL
alter table t2 modify a int;
two nullable inner cols => no subq materialization
explain extended select t1.a, t2.a, (t1.a,t1.a) in (select a,a from t2 as t3)
from t1 join t2 on t1.a+t2.a=1000;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (Block Nested Loop)
2 DEPENDENT SUBQUERY t3 NULL ALL NULL NULL NULL NULL 2 56.25 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,<in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`a`),<exists>(/* select#2 */ select 1,1 from `test`.`t2` `t3` where (((<cache>(`test`.`t1`.`a`) = `test`.`t3`.`a`) or isnull(`test`.`t3`.`a`)) and ((<cache>(`test`.`t1`.`a`) = `test`.`t3`.`a`) or isnull(`test`.`t3`.`a`))) having (<is_not_null_test>(`test`.`t3`.`a`) and <is_not_null_test>(`test`.`t3`.`a`)))) AS `(t1.a,t1.a) in (select a,a from t2 as t3)` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a` + `test`.`t2`.`a`) = 1000)
select t1.a, t2.a, (t1.a,t1.a) in (select a,a from t2 as t3)
from t1 join t2 on t1.a+t2.a=1000;
a a (t1.a,t1.a) in (select a,a from t2 as t3)
alter table t2 modify a int not null;
Test in WHERE
top-level => subq materialization. With one exception: if
semijoin is enabled in @@optimizer_switch, semijoin is chosen,
then rejected (due to outer join), and in that case, the
fallback is IN->EXISTS, subq-materialization is not tried...
explain extended select t1.a, t2.a
from t1 join t2 on t1.a+t2.a=3
where (t2.a,t2.a) in (select a,a from t2 as t3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (Block Nested Loop)
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch(t2); Using join buffer (Block Nested Loop)
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2` `t3`) join `test`.`t2` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((`test`.`t1`.`a` + `test`.`t2`.`a`) = 3))
select t1.a, t2.a
from t1 join t2 on t1.a+t2.a=3
where (t2.a,t2.a) in (select a,a from t2 as t3);
a a
2 1
1 2
cols not nullable => subq materialization
explain extended select t1.a, t2.a
from t1 join t2 on t1.a+t2.a=3
where (t2.a,t2.a) not in (select a,a from t2 as t3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (Block Nested Loop)
2 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((not(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`a`),(`test`.`t2`.`a`,`test`.`t2`.`a`) in ( <materialize> (/* select#2 */ select `test`.`t3`.`a`,`test`.`t3`.`a` from `test`.`t2` `t3` where 1 having 1 ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on <auto_key> where ((`test`.`t2`.`a` = `materialized-subquery`.`a`) and (`test`.`t2`.`a` = `materialized-subquery`.`a`))))))) and ((`test`.`t1`.`a` + `test`.`t2`.`a`) = 3))
select t1.a, t2.a
from t1 join t2 on t1.a+t2.a=3
where (t2.a,t2.a) not in (select a,a from t2 as t3);
a a
drop table t1,t2;
Test of WL6095 "Allow subquery materialization in NOT IN if
single-column subquery"
create table t1(a int null);
create table t2(a int null);
insert into t1 values(1),(2);
insert into t2 values(1),(2);
one col => subq materialization
explain extended select a, a in (select a from t2) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where 1 having 1 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`))))) AS `a in (select a from t2)` from `test`.`t1`
select a, a in (select a from t2) from t1;
a a in (select a from t2)
1 1
2 1
t2.a is not nullable, but in the query it may appear as NULL
as it's in an outer join. But there is only one inner column so
materialization is possible
explain extended select t1.a, t2.a, t2.a in (select * from t2 as t3)
from t1 left join t2 on t1.a+t2.a=1000;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (Block Nested Loop)
2 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,<in_optimizer>(`test`.`t2`.`a`,`test`.`t2`.`a` in ( <materialize> (/* select#2 */ select `test`.`t3`.`a` from `test`.`t2` `t3` where 1 having 1 ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on <auto_key> where ((`test`.`t2`.`a` = `materialized-subquery`.`a`))))) AS `t2.a in (select * from t2 as t3)` from `test`.`t1` left join `test`.`t2` on(((`test`.`t1`.`a` + `test`.`t2`.`a`) = 1000)) where 1
select t1.a, t2.a, t2.a in (select * from t2 as t3)
from t1 left join t2 on t1.a+t2.a=1000;
a a t2.a in (select * from t2 as t3)
1 NULL NULL
2 NULL NULL
_two_ outer columns, nullable => no materialization
explain extended select t1.a, t2.a, (t2.a,t2.a) in (select a,a from t2 as t3)
from t1 left join t2 on t1.a+t2.a=1000;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (Block Nested Loop)
2 DEPENDENT SUBQUERY t3 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`a`),<exists>(/* select#2 */ select 1,1 from `test`.`t2` `t3` where (<if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`a`) = `test`.`t3`.`a`) or isnull(`test`.`t3`.`a`)), true) and <if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`a`) = `test`.`t3`.`a`) or isnull(`test`.`t3`.`a`)), true)) having (<if>(outer_field_is_not_null, <is_not_null_test>(`test`.`t3`.`a`), true) and <if>(outer_field_is_not_null, <is_not_null_test>(`test`.`t3`.`a`), true)))) AS `(t2.a,t2.a) in (select a,a from t2 as t3)` from `test`.`t1` left join `test`.`t2` on(((`test`.`t1`.`a` + `test`.`t2`.`a`) = 1000)) where 1
select t1.a, t2.a, (t2.a,t2.a) in (select a,a from t2 as t3)
from t1 left join t2 on t1.a+t2.a=1000;
a a (t2.a,t2.a) in (select a,a from t2 as t3)
1 NULL NULL
2 NULL NULL
drop table t1,t2;
Test in HAVING
create table t1(a int, b int);
create table t2(a int);
insert into t1 values(1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
insert into t2 values(10),(20);
no NULLs.
explain extended select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary; Using filesort
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `z`,sum(`test`.`t1`.`b`) AS `sum(t1.b)` from `test`.`t1` group by `test`.`t1`.`a` having isnull(<in_optimizer>(`z`,`z` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where 1 having 1 ), <primary_index_lookup>(`z` in <temporary table> on <auto_key> where ((`z` = `materialized-subquery`.`a`))))))
select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
z sum(t1.b)
one outer NULL
insert into t1 values(null,null);
explain extended select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 7 100.00 Using temporary; Using filesort
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `z`,sum(`test`.`t1`.`b`) AS `sum(t1.b)` from `test`.`t1` group by `test`.`t1`.`a` having isnull(<in_optimizer>(`z`,`z` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where 1 having 1 ), <primary_index_lookup>(`z` in <temporary table> on <auto_key> where ((`z` = `materialized-subquery`.`a`))))))
select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
z sum(t1.b)
NULL NULL
one outer NULL and one inner NULL
insert into t2 values(null);
explain extended select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 7 100.00 Using temporary; Using filesort
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `z`,sum(`test`.`t1`.`b`) AS `sum(t1.b)` from `test`.`t1` group by `test`.`t1`.`a` having isnull(<in_optimizer>(`z`,`z` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where 1 having 1 ), <primary_index_lookup>(`z` in <temporary table> on <auto_key> where ((`z` = `materialized-subquery`.`a`))))))
select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
z sum(t1.b)
NULL NULL
1 6
2 6
one inner NULL
delete from t1 where a is null;
explain extended select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary; Using filesort
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `z`,sum(`test`.`t1`.`b`) AS `sum(t1.b)` from `test`.`t1` group by `test`.`t1`.`a` having isnull(<in_optimizer>(`z`,`z` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where 1 having 1 ), <primary_index_lookup>(`z` in <temporary table> on <auto_key> where ((`z` = `materialized-subquery`.`a`))))))
select t1.a as z, sum(t1.b) from t1 group by t1.a
having (z in (select * from t2)) is null;
z sum(t1.b)
1 6
2 6
drop table t1,t2;
Verify that an inner NULL is looked up only once (result is
cached).
create table t1(a int);
create table t2(a int);
insert into t1 values(1),(2),(3),(4),(5),(6);
insert into t1 select * from t1;
insert into t2 values(10),(20),(NULL);
explain extended select a, (a in (select * from t2)) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 12 100.00 NULL
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t2` where 1 having 1 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`))))) AS `(a in (select * from t2))` from `test`.`t1`
flush status;
select a, (a in (select * from t2)) from t1;
a (a in (select * from t2))
1 NULL
2 NULL
3 NULL
4 NULL
5 NULL
6 NULL
1 NULL
2 NULL
3 NULL
4 NULL
5 NULL
6 NULL
There will be one look-up in the temporary table for each row
of t1 (12), plus one additional look-up to check whether table
contains a NULL value.
show status like "handler_read_key";
Variable_name Value
Handler_read_key 13
drop table t1,t2;
#
# Bug#13495157 - SUBQUERY MATERIALIZATION NOT USED FOR CERTAIN
# STATEMENTS
#
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES(1),(2),(3);
CREATE TABLE t2(a INT);
INSERT INTO t2 VALUES(1),(2),(4);
# subquery materialization used for SELECT:
EXPLAIN SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 3 33.33 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`a` <> 2))
SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
a
1
# Also used for INSERT SELECT:
CREATE TABLE t3 SELECT * FROM t1;
EXPLAIN INSERT INTO t3 SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 INSERT t3 NULL ALL NULL NULL NULL NULL NULL NULL NULL
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 3 33.33 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
INSERT INTO t3 SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
SELECT * FROM t3;
a
1
1
2
3
EXPLAIN INSERT INTO t2 SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 INSERT t2 NULL ALL NULL NULL NULL NULL NULL NULL NULL
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Using temporary
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 3 33.33 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
INSERT INTO t2 SELECT * FROM t1 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
SELECT * FROM t2;
a
1
1
2
4
EXPLAIN INSERT INTO t2 SELECT * FROM t2 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 INSERT t2 NULL ALL NULL NULL NULL NULL NULL NULL NULL
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 4 100.00 Using where; Using temporary
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; FirstMatch(t2); Using join buffer (Block Nested Loop)
INSERT INTO t2 SELECT * FROM t2 WHERE a IN (SELECT * FROM t2 WHERE a <> 2);
SELECT * FROM t2;
a
1
1
1
1
2
4
4
# Not used for single-table UPDATE, DELETE:
EXPLAIN SELECT * FROM t2 WHERE a IN (SELECT * FROM t1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 Start temporary
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 7 14.29 Using where; End temporary; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) where (`test`.`t2`.`a` = `test`.`t1`.`a`)
EXPLAIN UPDATE t2 SET a=a-1 WHERE a IN (SELECT * FROM t1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 UPDATE t2 NULL ALL NULL NULL NULL NULL 7 100.00 Using where
2 DEPENDENT SUBQUERY t1 NULL ALL NULL NULL NULL NULL 3 33.33 Using where
UPDATE t2 SET a=a-1 WHERE a IN (SELECT * FROM t1);
SELECT * FROM t2;
a
0
0
0
0
1
4
4
EXPLAIN DELETE FROM t2 WHERE a IN (SELECT * FROM t1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 DELETE t2 NULL ALL NULL NULL NULL NULL 7 100.00 Using where
2 DEPENDENT SUBQUERY t1 NULL ALL NULL NULL NULL NULL 3 33.33 Using where
DELETE FROM t2 WHERE a IN (SELECT * FROM t1);
SELECT * FROM t2;
a
0
0
0
0
4
4
EXPLAIN UPDATE t2 SET a=a-1 WHERE a IN (SELECT * FROM t2);
ERROR HY000: You can't specify target table 't2' for update in FROM clause
EXPLAIN DELETE FROM t2 WHERE a IN (SELECT * FROM t2);
ERROR HY000: You can't specify target table 't2' for update in FROM clause
UPDATE t2 SET a=3 WHERE a=0;
# Used for multi-table UPDATE, DELETE:
EXPLAIN SELECT * FROM t2,t3 WHERE t2.a IN (SELECT * FROM t1 WHERE a <> 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 66.67 Using where; Start temporary
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; End temporary; Using join buffer (Block Nested Loop)
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 4 100.00 Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t3` where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`a` <> 2))
EXPLAIN UPDATE t2,t3 SET t2.a=t2.a-2 WHERE t2.a IN (SELECT * FROM t1 WHERE a <> 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 66.67 Using where; Start temporary
1 UPDATE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; End temporary
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
UPDATE t2,t3 SET t2.a=t2.a-2 WHERE t2.a IN (SELECT * FROM t1 WHERE a <> 2);
SELECT * FROM t2;
a
1
1
1
1
4
4
EXPLAIN DELETE t2.* FROM t2,t3 WHERE t2.a IN (SELECT * FROM t1 WHERE a <> 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 66.67 Using where; Start temporary
1 DELETE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; End temporary
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
DELETE t2.* FROM t2,t3 WHERE t2.a IN (SELECT * FROM t1 WHERE a <> 2);
SELECT * FROM t2;
a
4
4
EXPLAIN UPDATE t2,t3 SET t2.a=10 WHERE t2.a IN (SELECT * FROM t2 WHERE a <> 2);
ERROR HY000: You can't specify target table 't2' for update in FROM clause
EXPLAIN DELETE t2.* FROM t2,t3 WHERE t2.a IN (SELECT * FROM t2 WHERE a <> 2);
ERROR HY000: You can't specify target table 't2' for update in FROM clause
DROP TABLE t1,t2,t3;
#
# Test that subquery materialization only does one lookup: does
# not try to read the next row if the first row failed the
# subquery's WHERE. We use a case where index lookup is not
# enough to satisfy IN(), because index has length two when the
# outer value has length three, and thus the post-filtering
# WHERE added by subselect_hash_sj_engine::setup() makes the
# decision.
#
create table t1 (a varchar(3));
create table t2 (a varchar(2));
insert into t1 values('aaa'), ('aaa');
insert into t2 values('aa'), ('aa');
explain select * from t1 where a in (select a from t2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where (`test`.`t1`.`a` = `test`.`t2`.`a`)
flush status;
select * from t1 where a in (select a from t2);
a
show status like "handler_read%";
Variable_name Value
Handler_read_first 0
Handler_read_key 0
Handler_read_last 0
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 6
drop table t1,t2;
#
# Bug#13655791 DIFFERENT RESULT WITH WL6094 ON QUERY WITH XOR
# IN WHERE CLAUSE + MYISAM
#
CREATE TABLE t1 (
pk int NOT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
PRIMARY KEY (pk)
);
INSERT INTO t1 VALUES (10,'x');
CREATE TABLE t2 (
pk int NOT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
PRIMARY KEY (pk)
);
INSERT INTO t2 VALUES (1,'v'), (5,'x'), (11,'z'), (12,'c'), (15,'y');
CREATE TABLE t3 (
pk int NOT NULL,
col_int_key int DEFAULT NULL,
PRIMARY KEY (pk),
KEY col_int_key (col_int_key)
);
INSERT INTO t3 VALUES (10,8);
CREATE TABLE t4 (
pk int NOT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
PRIMARY KEY (pk)
);
INSERT INTO t4 VALUES (1,'x');
EXPLAIN SELECT outr.pk, outr.col_varchar_nokey, outr2.col_varchar_nokey
FROM t2 AS outr2
JOIN t4 AS outr
ON (outr2.col_varchar_nokey > outr.col_varchar_nokey)
WHERE
outr.col_varchar_nokey IN (
SELECT innr.col_varchar_nokey
FROM t3 AS innr2
LEFT JOIN t1 AS innr
ON (innr2.col_int_key >= innr.pk)
)
XOR outr.pk < 6
;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY innr2 NULL system NULL NULL NULL NULL 1 100.00 NULL
2 DEPENDENT SUBQUERY innr NULL system PRIMARY NULL NULL NULL 1 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select '1' AS `pk`,'x' AS `col_varchar_nokey`,`test`.`outr2`.`col_varchar_nokey` AS `col_varchar_nokey` from `test`.`t2` `outr2` where ((<in_optimizer>('x',<exists>(/* select#2 */ select 1 from `test`.`t1` `innr` where <if>(outer_field_is_not_null, ((<cache>('x') = NULL) or isnull(NULL)), true) having <if>(outer_field_is_not_null, <is_not_null_test>(NULL), true))) xor ('1' < 6)) and (`test`.`outr2`.`col_varchar_nokey` > 'x'))
FLUSH STATUS;
SELECT outr.pk, outr.col_varchar_nokey, outr2.col_varchar_nokey
FROM t2 AS outr2
JOIN t4 AS outr
ON (outr2.col_varchar_nokey > outr.col_varchar_nokey)
WHERE
outr.col_varchar_nokey IN (
SELECT innr.col_varchar_nokey
FROM t3 AS innr2
LEFT JOIN t1 AS innr
ON (innr2.col_int_key >= innr.pk)
)
XOR outr.pk < 6
;
pk col_varchar_nokey col_varchar_nokey
SHOW STATUS LIKE "HANDLER_READ%";
Variable_name Value
Handler_read_first 3
Handler_read_key 0
Handler_read_last 0
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 3
DROP TABLE t1,t2,t3,t4;
#
# Bug#13727407: Assert !item->const_item() || !item->not_null_tables()
#
CREATE TABLE t1 (
col_int_key INT,
KEY col_int_key (col_int_key)
);
INSERT INTO t1 VALUES (1);
CREATE TABLE t2 (
col_int_key INT,
col_time_key TIME,
col_datetime_nokey DATETIME,
KEY col_int_key (col_int_key),
KEY col_time_key (col_time_key)
);
INSERT INTO t2 VALUES
(7,'14:03:03','2001-11-28 00:50:27'), (1,'01:46:09','2007-10-09 19:53:04');
EXPLAIN SELECT col_datetime_nokey AS x
FROM t2 AS outr
WHERE col_int_key IN (
SELECT STRAIGHT_JOIN col_int_key
FROM t1
) AND outr.col_int_key = 0
HAVING x = '2000-09-09'
ORDER BY col_time_key;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY t1 NULL system col_int_key NULL NULL NULL 1 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`outr`.`col_datetime_nokey` AS `x` from `test`.`t2` `outr` where ((`test`.`outr`.`col_int_key` = 0) and <in_optimizer>(0,<exists>(/* select#2 */ select straight_join 1 from dual where (<cache>(0) = '1')))) having (`x` = '2000-09-09') order by `test`.`outr`.`col_time_key`
SELECT col_datetime_nokey AS x
FROM t2 AS outr
WHERE col_int_key IN (
SELECT STRAIGHT_JOIN col_int_key
FROM t1
) AND outr.col_int_key = 0
HAVING x = '2000-09-09'
ORDER BY col_time_key;
x
DROP TABLE t1, t2;
#
# Bug#13838501 ASSERTION `TABLE->FILE->INITED' FAILED IN
# SUBSELECT_HASH_SJ_ENGINE::EXEC
#
CREATE TABLE t1
(c1 bigint,c2 char,pk INT,c3 char,c4 int,c5 INT,key (c5))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (763078661862588416,0,1,'',1,'');
Warnings:
Warning 1366 Incorrect integer value: '' for column 'c5' at row 1
CREATE TABLE t2 (c4k int,c4 int,cminnuk INT,key (cminnuk)) ENGINE=InnoDB;
INSERT INTO t2 VALUES(0,'','');
Warnings:
Warning 1366 Incorrect integer value: '' for column 'c4' at row 1
Warning 1366 Incorrect integer value: '' for column 'cminnuk' at row 1
CREATE TABLE t3
(c4 int,pk INT,c1 bigint,cyk year,cy year,key (cyk))
ENGINE=InnoDB;
INSERT INTO t3 VALUES(0,8,'',0,'');
Warnings:
Warning 1366 Incorrect integer value: '' for column 'c1' at row 1
Warning 1366 Incorrect integer value: '' for column 'cy' at row 1
EXPLAIN SELECT o.c2 AS x FROM t1 AS o
WHERE o.c1 IN
(SELECT innr.c4 AS y
FROM t2 AS innr2 JOIN t3 AS innr
ON (innr2.c4k=innr.c4)
WHERE innr.c1=6 OR NOT innr.c1=innr.pk
ORDER BY innr.c4)
AND o.c4=7 XOR o.pk=3 ORDER BY o.pk;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY o NULL ALL NULL NULL NULL NULL 1 100.00 Using where; Using filesort
2 SUBQUERY innr2 NULL ALL NULL NULL NULL NULL 1 100.00 NULL
2 SUBQUERY innr NULL ALL NULL NULL NULL NULL 1 100.00 Using where; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`o`.`c2` AS `x` from `test`.`t1` `o` where ((<in_optimizer>(`test`.`o`.`c1`,`test`.`o`.`c1` in ( <materialize> (/* select#2 */ select `test`.`innr`.`c4` AS `y` from `test`.`t2` `innr2` join `test`.`t3` `innr` where ((`test`.`innr`.`c4` = `test`.`innr2`.`c4k`) and ((`test`.`innr`.`c1` = 6) or (`test`.`innr`.`c1` <> `test`.`innr`.`pk`))) having 1 ), <primary_index_lookup>(`test`.`o`.`c1` in <temporary table> on <auto_key> where ((`test`.`o`.`c1` = `materialized-subquery`.`y`))))) and (`test`.`o`.`c4` = 7)) xor (`test`.`o`.`pk` = 3)) order by `test`.`o`.`pk`
SELECT o.c2 AS x FROM t1 AS o
WHERE o.c1 IN
(SELECT innr.c4 AS y
FROM t2 AS innr2 JOIN t3 AS innr
ON (innr2.c4k=innr.c4)
WHERE innr.c1=6 OR NOT innr.c1=innr.pk
ORDER BY innr.c4)
AND o.c4=7 XOR o.pk=3 ORDER BY o.pk;
x
DROP TABLE t1,t2,t3;
# End of 5.6 tests
#
# Bug #18770217 DIFFERENT RESULT WITH SP ON 2ND EXECUTION OF QUERY WITH STRAIGHT_JOIN IN NOT IN
#
CREATE TABLE t1 (
col_int_key INT,
col_varchar_key VARCHAR(1),
col_varchar_nokey VARCHAR(1),
KEY col_int_key (col_int_key),
KEY col_varchar_key (col_varchar_key,col_int_key)
);
INSERT INTO t1 VALUES (8,'x','x');
INSERT INTO t1 VALUES (NULL,'x','x');
CREATE TABLE t2 (
col_int_key INT,
col_varchar_key VARCHAR(1),
col_varchar_nokey VARCHAR(1),
KEY col_int_key (col_int_key),
KEY col_varchar_key (col_varchar_key,col_int_key)
);
INSERT INTO t2 VALUES (0,'x','x');
CREATE TABLE t3 (
col_int_key INT,
col_varchar_key VARCHAR(1),
col_varchar_nokey VARCHAR(1),
KEY col_int_key (col_int_key),
KEY col_varchar_key (col_varchar_key,col_int_key)
);
INSERT INTO t3 VALUES (8,'g','g');
CREATE VIEW view_d AS SELECT * FROM t2;
EXPLAIN SELECT alias2.col_int_key
FROM t1 AS alias1 , t2 AS alias2
WHERE alias1.col_varchar_key NOT IN (
SELECT sq1_alias1.col_varchar_nokey
FROM t3 AS sq1_alias1
JOIN ( t1 AS sq1_alias2
STRAIGHT_JOIN view_d AS sq1_alias3 )
WHERE (
SELECT col_int_key
FROM t1 AS c_sq1_alias1
WHERE c_sq1_alias1.col_varchar_key = sq1_alias3.col_varchar_nokey
)
)
;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY alias2 NULL system NULL NULL NULL NULL 1 100.00 NULL
1 PRIMARY alias1 NULL index NULL col_varchar_key 9 NULL 2 100.00 Using where; Using index
2 SUBQUERY sq1_alias1 NULL system NULL NULL NULL NULL 1 100.00 NULL
2 SUBQUERY sq1_alias2 NULL index NULL col_int_key 5 NULL 2 100.00 Using index
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 1 100.00 Using where; Using join buffer (Block Nested Loop)
3 DEPENDENT SUBQUERY c_sq1_alias1 NULL ref col_varchar_key col_varchar_key 4 func 2 100.00 Using where; Using index
Warnings:
Note 1276 Field or reference 'sq1_alias3.col_varchar_nokey' of SELECT #3 was resolved in SELECT #2
Note 1003 /* select#1 */ select '0' AS `col_int_key` from `test`.`t1` `alias1` where (not(<in_optimizer>(`test`.`alias1`.`col_varchar_key`,`test`.`alias1`.`col_varchar_key` in ( <materialize> (/* select#2 */ select 'g' from `test`.`t1` `sq1_alias2` join `test`.`t2` where (/* select#3 */ select `test`.`c_sq1_alias1`.`col_int_key` from `test`.`t1` `c_sq1_alias1` where (`test`.`c_sq1_alias1`.`col_varchar_key` = `test`.`t2`.`col_varchar_nokey`)) having 1 ), <primary_index_lookup>(`test`.`alias1`.`col_varchar_key` in <temporary table> on <auto_key> where ((`test`.`alias1`.`col_varchar_key` = `materialized-subquery`.`col_varchar_nokey`)))))))
SELECT alias2.col_int_key
FROM t1 AS alias1 , t2 AS alias2
WHERE alias1.col_varchar_key NOT IN (
SELECT sq1_alias1.col_varchar_nokey
FROM t3 AS sq1_alias1
JOIN ( t1 AS sq1_alias2
STRAIGHT_JOIN view_d AS sq1_alias3 )
WHERE (
SELECT col_int_key
FROM t1 AS c_sq1_alias1
WHERE c_sq1_alias1.col_varchar_key = sq1_alias3.col_varchar_nokey
)
)
;
ERROR 21000: Subquery returns more than 1 row
CREATE PROCEDURE stored_proc_2581 () LANGUAGE SQL SELECT alias2.col_int_key
FROM t1 AS alias1 , t2 AS alias2
WHERE alias1.col_varchar_key NOT IN (
SELECT sq1_alias1.col_varchar_nokey
FROM t3 AS sq1_alias1
JOIN ( t1 AS sq1_alias2
STRAIGHT_JOIN view_d AS sq1_alias3 )
WHERE (
SELECT col_int_key
FROM t1 AS c_sq1_alias1
WHERE c_sq1_alias1.col_varchar_key = sq1_alias3.col_varchar_nokey
)
)
;
CALL stored_proc_2581;
ERROR 21000: Subquery returns more than 1 row
CALL stored_proc_2581;
ERROR 21000: Subquery returns more than 1 row
DROP PROCEDURE stored_proc_2581;
PREPARE s FROM 'SELECT alias2.col_int_key
FROM t1 AS alias1 , t2 AS alias2
WHERE alias1.col_varchar_key NOT IN (
SELECT sq1_alias1.col_varchar_nokey
FROM t3 AS sq1_alias1
JOIN ( t1 AS sq1_alias2
STRAIGHT_JOIN view_d AS sq1_alias3 )
WHERE (
SELECT col_int_key
FROM t1 AS c_sq1_alias1
WHERE c_sq1_alias1.col_varchar_key = sq1_alias3.col_varchar_nokey
)
)
';
EXECUTE s;
ERROR 21000: Subquery returns more than 1 row
EXECUTE s;
ERROR 21000: Subquery returns more than 1 row
DROP VIEW view_d;
DROP TABLE t1,t2,t3;
#
# Bug#19297190 NOT IN DOESN'T RETURN EXPECTED RESULT
#
CREATE TABLE t1 (a VARCHAR(500) CHARACTER SET UTF8) ENGINE=INNODB;
SET @str= repeat("a",450);
SET @num=1000;
INSERT INTO t1 VALUES (CONCAT((@num:=@num+1), @str));
INSERT INTO t1 SELECT CONCAT((@num:=@num+1), @str) FROM t1;
INSERT INTO t1 SELECT CONCAT((@num:=@num+1), @str) FROM t1;
INSERT INTO t1 SELECT CONCAT((@num:=@num+1), @str) FROM t1;
INSERT INTO t1 SELECT CONCAT((@num:=@num+1), @str) FROM t1;
INSERT INTO t1 SELECT CONCAT((@num:=@num+1), @str) FROM t1;
SELECT COUNT(*) FROM t1;
COUNT(*)
32
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
set @save_heap_size= @@max_heap_table_size;
set @@max_heap_table_size= 16384;
set @saved_engine=@@internal_tmp_disk_storage_engine;
set global internal_tmp_disk_storage_engine = 'myisam';
EXPLAIN SELECT COUNT(*)
FROM t1
WHERE t1.a NOT IN (
SELECT t2.a FROM t1 as t2
);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 32 100.00 Using where
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 32 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`t1` where (not(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t1` `t2` where 1 having 1 ), <index_lookup>(`test`.`t1`.`a` in <temporary table> on <hash_distinct_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`)))))))
SELECT COUNT(*)
FROM t1
WHERE t1.a NOT IN (
SELECT t2.a FROM t1 as t2
);
COUNT(*)
0
set global internal_tmp_disk_storage_engine = 'innodb';
EXPLAIN SELECT COUNT(*)
FROM t1
WHERE t1.a NOT IN (
SELECT t2.a FROM t1 as t2
);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 32 100.00 Using where
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 32 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`t1` where (not(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `test`.`t2`.`a` from `test`.`t1` `t2` where 1 having 1 ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on <auto_key> where ((`test`.`t1`.`a` = `materialized-subquery`.`a`)))))))
SELECT COUNT(*)
FROM t1
WHERE t1.a NOT IN (
SELECT t2.a FROM t1 as t2
);
COUNT(*)
0
DROP TABLE t1;
set global internal_tmp_disk_storage_engine = @saved_engine;
set @@max_heap_table_size= @save_heap_size;
#
# Bug#19805761 ASSERTION FAILURE IN SUBSELECT_HASH_SJ_ENGINE::EXEC WITH SUBQUERY IN LEFT ARGUME
#
CREATE TABLE t1(a INT) ENGINE=INNODB;
INSERT INTO t1 VALUES(1);
CREATE TABLE t2 LIKE t1;
ANALYZE TABLE t1,t2;
Table Op Msg_type Msg_text
test.t1 analyze status OK
test.t2 analyze status OK
EXPLAIN SELECT (SELECT 1,2 FROM t2) NOT IN (SELECT 1,2 FROM t1) FROM t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1 100.00 NULL
3 DEPENDENT SUBQUERY t1 NULL ALL NULL NULL NULL NULL 1 100.00 Using where
2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 1 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select (not(<in_optimizer>((/* select#2 */ select 1,2 from `test`.`t2`),<exists>(/* select#3 */ select 1,1 from `test`.`t1` where (<if>(outer_field_is_not_null, ((<cache>(<cache>(1)) = 1) or <cache>(isnull(1))), true) and <if>(outer_field_is_not_null, ((<cache>(<cache>(2)) = 2) or <cache>(isnull(2))), true)) having (<if>(outer_field_is_not_null, <cache>(<is_not_null_test>(1)), true) and <if>(outer_field_is_not_null, <cache>(<is_not_null_test>(2)), true)))))) AS `(SELECT 1,2 FROM t2) NOT IN (SELECT 1,2 FROM t1)` from `test`.`t1`
SELECT (SELECT 1,2 FROM t2) NOT IN (SELECT 1,2 FROM t1) FROM t1;
(SELECT 1,2 FROM t2) NOT IN (SELECT 1,2 FROM t1)
NULL
DROP TABLE t1,t2;
#
# Bug#20729351 ASSERTION FAILED: ITEM_IN->LEFT_EXPR->ELEMENT_INDEX(0)->MAYBE_NULL
#
CREATE TABLE t1 (a LONGBLOB) ENGINE=INNODB;
INSERT INTO t1 VALUES ('a'), ('a'), ('a');
CREATE TABLE t2 (a INT) ENGINE=INNODB;
INSERT INTO t2 VALUES(1), (1), (1), (1);
ANALYZE TABLE t1, t2;
Table Op Msg_type Msg_text
test.t1 analyze status OK
test.t2 analyze status OK
SELECT
(SELECT NULL IN (NULL) FROM t1 WHERE a) =
ANY(SELECT 1 FROM t2)
FROM t1;
(SELECT NULL IN (NULL) FROM t1 WHERE a) =
ANY(SELECT 1 FROM t2)
NULL
NULL
NULL
DROP TABLE t1, t2;
#
# Bug#22089623 ASSERTION IN ITEM_FUNC_TRIG_COND::VAL_INT()
# WITH SUBQUERY ON LEFT SIDE OF IN
#
EXPLAIN SELECT (SELECT NULL, NULL) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select NULL,NULL),<exists>(/* select#3 */ select 1,2 having (<if>(outer_field_is_not_null, ((<cache>(<cache>(NULL)) = 1) or isnull(1)), true) and <if>(outer_field_is_not_null, ((<cache>(<cache>(NULL)) = 2) or isnull(2)), true) and <if>(outer_field_is_not_null, <is_not_null_test>(1), true) and <if>(outer_field_is_not_null, <is_not_null_test>(2), true)))) AS `(SELECT NULL, NULL) IN (SELECT 1, 2)`
SELECT (SELECT NULL, NULL) IN (SELECT 1, 2);
(SELECT NULL, NULL) IN (SELECT 1, 2)
NULL
EXPLAIN SELECT (SELECT 1, 1) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,1),<exists>(/* select#3 */ select 1,2 having 0)) AS `(SELECT 1, 1) IN (SELECT 1, 2)`
SELECT (SELECT 1, 1) IN (SELECT 1, 2);
(SELECT 1, 1) IN (SELECT 1, 2)
0
EXPLAIN SELECT (SELECT 1, 2) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,2),<exists>(/* select#3 */ select 1,2 having 1)) AS `(SELECT 1, 2) IN (SELECT 1, 2)`
SELECT (SELECT 1, 2) IN (SELECT 1, 2);
(SELECT 1, 2) IN (SELECT 1, 2)
1
EXPLAIN SELECT (SELECT NULL, 2) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select NULL,2),<exists>(/* select#3 */ select 1,2 having (<if>(outer_field_is_not_null, ((<cache>(<cache>(NULL)) = 1) or isnull(1)), true) and <if>(outer_field_is_not_null, <is_not_null_test>(1), true)))) AS `(SELECT NULL, 2) IN (SELECT 1, 2)`
SELECT (SELECT NULL, 2) IN (SELECT 1, 2);
(SELECT NULL, 2) IN (SELECT 1, 2)
NULL
EXPLAIN SELECT (SELECT 1, NULL) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,NULL),<exists>(/* select#3 */ select 1,2 having (<if>(outer_field_is_not_null, ((<cache>(<cache>(NULL)) = 2) or isnull(2)), true) and <if>(outer_field_is_not_null, <is_not_null_test>(2), true)))) AS `(SELECT 1, NULL) IN (SELECT 1, 2)`
SELECT (SELECT 1, NULL) IN (SELECT 1, 2);
(SELECT 1, NULL) IN (SELECT 1, 2)
NULL
EXPLAIN SELECT (SELECT NULL, 1) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select NULL,1),<exists>(/* select#3 */ select 1,2 having 0)) AS `(SELECT NULL, 1) IN (SELECT 1, 2)`
SELECT (SELECT NULL, 1) IN (SELECT 1, 2);
(SELECT NULL, 1) IN (SELECT 1, 2)
0
EXPLAIN SELECT (SELECT 2, NULL) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 2,NULL),<exists>(/* select#3 */ select 1,2 having 0)) AS `(SELECT 2, NULL) IN (SELECT 1, 2)`
SELECT (SELECT 2, NULL) IN (SELECT 1, 2);
(SELECT 2, NULL) IN (SELECT 1, 2)
0
EXPLAIN SELECT (SELECT 1, 2 UNION SELECT 1, 2) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,2 union /* select#3 */ select 1,2),<exists>(/* select#4 */ select 1,2 having ((<cache>(<cache>(`1`)) = 1) and (<cache>(<cache>(`2`)) = 2)))) AS `(SELECT 1, 2 UNION SELECT 1, 2) IN (SELECT 1, 2)`
SELECT (SELECT 1, 2 UNION SELECT 1, 2) IN (SELECT 1, 2);
(SELECT 1, 2 UNION SELECT 1, 2) IN (SELECT 1, 2)
1
EXPLAIN SELECT (SELECT 1, 1 UNION SELECT 1, 1) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,1 union /* select#3 */ select 1,1),<exists>(/* select#4 */ select 1,2 having ((<cache>(<cache>(`1`)) = 1) and (<cache>(<cache>(`1`)) = 2)))) AS `(SELECT 1, 1 UNION SELECT 1, 1) IN (SELECT 1, 2)`
SELECT (SELECT 1, 1 UNION SELECT 1, 1) IN (SELECT 1, 2);
(SELECT 1, 1 UNION SELECT 1, 1) IN (SELECT 1, 2)
0
EXPLAIN SELECT (SELECT NULL, NULL UNION SELECT NULL, NULL) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select NULL,NULL union /* select#3 */ select NULL,NULL),<exists>(/* select#4 */ select 1,2 having (<if>(outer_field_is_not_null, ((<cache>(<cache>(`NULL`)) = 1) or isnull(1)), true) and <if>(outer_field_is_not_null, ((<cache>(<cache>(`NULL`)) = 2) or isnull(2)), true) and <if>(outer_field_is_not_null, <is_not_null_test>(1), true) and <if>(outer_field_is_not_null, <is_not_null_test>(2), true)))) AS `(SELECT NULL, NULL UNION SELECT NULL, NULL) IN (SELECT 1, 2)`
SELECT (SELECT NULL, NULL UNION SELECT NULL, NULL) IN (SELECT 1, 2);
(SELECT NULL, NULL UNION SELECT NULL, NULL) IN (SELECT 1, 2)
NULL
EXPLAIN SELECT (SELECT 1, 1 UNION SELECT 2, 2) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,1 union /* select#3 */ select 2,2),<exists>(/* select#4 */ select 1,2 having ((<cache>(<cache>(`1`)) = 1) and (<cache>(<cache>(`1`)) = 2)))) AS `(SELECT 1, 1 UNION SELECT 2, 2) IN (SELECT 1, 2)`
SELECT (SELECT 1, 1 UNION SELECT 2, 2) IN (SELECT 1, 2);
ERROR 21000: Subquery returns more than 1 row
EXPLAIN SELECT (SELECT 1, 2 WHERE FALSE UNION SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,2 from DUAL where 0 union /* select#3 */ select 1,2 from DUAL where 0),<exists>(/* select#4 */ select 1,2 having (<if>(outer_field_is_not_null, ((<cache>(<cache>(`1`)) = 1) or isnull(1)), true) and <if>(outer_field_is_not_null, ((<cache>(<cache>(`2`)) = 2) or isnull(2)), true) and <if>(outer_field_is_not_null, <is_not_null_test>(1), true) and <if>(outer_field_is_not_null, <is_not_null_test>(2), true)))) AS `(SELECT 1, 2 WHERE FALSE UNION SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2)`
SELECT (SELECT 1, 2 WHERE FALSE UNION SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2);
(SELECT 1, 2 WHERE FALSE UNION SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2)
NULL
EXPLAIN SELECT (SELECT 1, 2 UNION ALL SELECT 1, 2) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,2 union all /* select#3 */ select 1,2),<exists>(/* select#4 */ select 1,2 having ((<cache>(<cache>(`1`)) = 1) and (<cache>(<cache>(`2`)) = 2)))) AS `(SELECT 1, 2 UNION ALL SELECT 1, 2) IN (SELECT 1, 2)`
SELECT (SELECT 1, 2 UNION ALL SELECT 1, 2) IN (SELECT 1, 2);
ERROR 21000: Subquery returns more than 1 row
EXPLAIN SELECT (SELECT 1, 1 UNION ALL SELECT 1, 1) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,1 union all /* select#3 */ select 1,1),<exists>(/* select#4 */ select 1,2 having ((<cache>(<cache>(`1`)) = 1) and (<cache>(<cache>(`1`)) = 2)))) AS `(SELECT 1, 1 UNION ALL SELECT 1, 1) IN (SELECT 1, 2)`
SELECT (SELECT 1, 1 UNION ALL SELECT 1, 1) IN (SELECT 1, 2);
ERROR 21000: Subquery returns more than 1 row
EXPLAIN SELECT (SELECT NULL, NULL UNION ALL SELECT NULL, NULL) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select NULL,NULL union all /* select#3 */ select NULL,NULL),<exists>(/* select#4 */ select 1,2 having (<if>(outer_field_is_not_null, ((<cache>(<cache>(`NULL`)) = 1) or isnull(1)), true) and <if>(outer_field_is_not_null, ((<cache>(<cache>(`NULL`)) = 2) or isnull(2)), true) and <if>(outer_field_is_not_null, <is_not_null_test>(1), true) and <if>(outer_field_is_not_null, <is_not_null_test>(2), true)))) AS `(SELECT NULL, NULL UNION ALL SELECT NULL, NULL) IN (SELECT 1, 2)`
SELECT (SELECT NULL, NULL UNION ALL SELECT NULL, NULL) IN (SELECT 1, 2);
ERROR 21000: Subquery returns more than 1 row
EXPLAIN SELECT (SELECT 1, 1 UNION ALL SELECT 2, 2) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,1 union all /* select#3 */ select 2,2),<exists>(/* select#4 */ select 1,2 having ((<cache>(<cache>(`1`)) = 1) and (<cache>(<cache>(`1`)) = 2)))) AS `(SELECT 1, 1 UNION ALL SELECT 2, 2) IN (SELECT 1, 2)`
SELECT (SELECT 1, 1 UNION ALL SELECT 2, 2) IN (SELECT 1, 2);
ERROR 21000: Subquery returns more than 1 row
EXPLAIN SELECT (SELECT 1, 2 WHERE FALSE UNION ALL SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 /* select#1 */ select <in_optimizer>((/* select#2 */ select 1,2 from DUAL where 0 union all /* select#3 */ select 1,2 from DUAL where 0),<exists>(/* select#4 */ select 1,2 having (<if>(outer_field_is_not_null, ((<cache>(<cache>(`1`)) = 1) or isnull(1)), true) and <if>(outer_field_is_not_null, ((<cache>(<cache>(`2`)) = 2) or isnull(2)), true) and <if>(outer_field_is_not_null, <is_not_null_test>(1), true) and <if>(outer_field_is_not_null, <is_not_null_test>(2), true)))) AS `(SELECT 1, 2 WHERE FALSE UNION ALL SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2)`
SELECT (SELECT 1, 2 WHERE FALSE UNION ALL SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2);
(SELECT 1, 2 WHERE FALSE UNION ALL SELECT 1, 2 WHERE FALSE) IN (SELECT 1, 2)
NULL
#
# Bug#20536077: WRONG RESULT FOR SELECT NULL,NULL IN (SUBQUERY)
#
# The following queries correctly returned NULL.
CREATE TABLE s (s INT) ENGINE=InnoDB;
INSERT INTO s VALUES(1);
SELECT NULL IN (SELECT 1);
NULL IN (SELECT 1)
NULL
SELECT NULL = (SELECT 1);
NULL = (SELECT 1)
NULL
SELECT NULL = (SELECT 1 FROM s);
NULL = (SELECT 1 FROM s)
NULL
SELECT (NULL, NULL) IN (SELECT 1, 2);
(NULL, NULL) IN (SELECT 1, 2)
NULL
# The following queries returned 0 instead of NULL.
SELECT NULL IN (SELECT 1 FROM s);
NULL IN (SELECT 1 FROM s)
NULL
SELECT (SELECT NULL, NULL FROM DUAL) IN (SELECT 1, 2 FROM s) FROM s;
(SELECT NULL, NULL FROM DUAL) IN (SELECT 1, 2 FROM s)
NULL
SELECT (SELECT NULL,NULL) IN (SELECT 1, 2);
(SELECT NULL,NULL) IN (SELECT 1, 2)
NULL
CREATE TABLE u(a INT, b INT) ENGINE=MyISAM;
INSERT INTO u VALUES (NULL, NULL);
SELECT (SELECT * FROM u) IN (SELECT 1, 2 FROM s) FROM s;
(SELECT * FROM u) IN (SELECT 1, 2 FROM s)
NULL
SELECT (SELECT * FROM u) IN (SELECT 1, 2);
(SELECT * FROM u) IN (SELECT 1, 2)
NULL
DROP TABLE s, u;
set @@optimizer_switch=@old_opt_switch;
SET sql_mode = default;
set global innodb_large_prefix=default;
Warnings:
Warning 131 Using innodb_large_prefix is deprecated and the parameter may be removed in future releases. See http://dev.mysql.com/doc/refman/5.7/en/innodb-file-format.html
set optimizer_switch=default;