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2ba1616e5d
Conversion of NOT IN predicates into NOT IN subqueries did not work correctly: the predicates actually were converted into IN subqueries. As a result if the conversion was applied for the query with a NOT IN predicate the query could return a wrong result set.
617 lines
21 KiB
Plaintext
617 lines
21 KiB
Plaintext
create table t1 (a int, b int);
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insert into t1
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values (1,2), (4,6), (9,7),
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(1,1), (2,5), (7,8);
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create table t2 (a int, b int, c int);
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insert into t2
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values (1,2,3), (5,1,2), (4,3,7),
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(8,9,0), (10,7,1), (5,5,1);
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create table t3 (a int, b varchar(16), index idx(a));
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insert into t3 values
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(1, "abc"), (3, "egh"), (8, "axxx"), (10, "abc"),
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(2, "ccw"), (8, "wqqe"), (7, "au"), (9, "waa"),
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(3, "rass"), (9, "ert"), (9, "lok"), (8, "aww"),
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(1, "todd"), (3, "rew"), (8, "aww"), (3, "sw"),
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(11, "llk"), (7, "rbw"), (1, "sm"), (2, "jyp"),
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(4, "yq"), (5, "pled"), (12, "ligin"), (12, "toww"),
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(6, "mxm"), (15, "wanone"), (9, "sunqq"), (2, "abe");
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# optimization is not used
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select * from t1 where a in (1,2);
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a b
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1 2
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1 1
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2 5
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explain extended select * from t1 where a in (1,2);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 6 100.00 Using where
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Warnings:
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Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` in (1,2)
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# set minimum number of values in VALUEs list when optimization works to 2
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set @@in_subquery_conversion_threshold= 2;
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# single IN-predicate in WHERE-part
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select * from t1 where a in (1,2);
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a b
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1 2
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1 1
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2 5
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select * from t1
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where a in
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(
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select *
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from (values (1),(2)) as tvc_0
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);
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a b
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1 2
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1 1
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2 5
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explain extended select * from t1 where a in (1,2);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
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3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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explain extended select * from t1
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where a in
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(
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select *
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from (values (1),(2)) as tvc_0
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);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
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3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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# AND-condition with IN-predicates in WHERE-part
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select * from t1
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where a in (1,2) and
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b in (1,5);
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a b
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1 1
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2 5
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select * from t1
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where a in
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(
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select *
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from (values (1),(2)) as tvc_0
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)
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and b in
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(
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select *
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from (values (1),(5)) as tvc_1
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);
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a b
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1 1
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2 5
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explain extended select * from t1
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where a in (1,2) and
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b in (1,5);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery4> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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4 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
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2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
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5 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) semi join ((values (1),(5)) `tvc_1`) where `test`.`t1`.`b` = `tvc_1`.`1`
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explain extended select * from t1
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where a in
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(
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select *
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from (values (1),(2)) as tvc_0
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)
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and b in
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(
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select *
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from (values (1),(5)) as tvc_1
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);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery4> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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4 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
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2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
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5 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) semi join ((values (1),(5)) `tvc_1`) where `test`.`t1`.`b` = `tvc_1`.`1`
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# subquery with IN-predicate
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select * from t1
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where a in
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(
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select a
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from t2 where b in (3,4)
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);
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a b
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4 6
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select * from t1
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where a in
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(
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select a from t2
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where b in
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(
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select *
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from (values (3),(4)) as tvc_0
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)
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);
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a b
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4 6
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explain extended select * from t1
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where a in
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(
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select a
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from t2 where b in (3,4)
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);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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2 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (3),(4)) `tvc_0` join `test`.`t2`) where `test`.`t2`.`b` = `tvc_0`.`3`
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explain extended select * from t1
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where a in
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(
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select a from t2
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where b in
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(
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select *
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from (values (3),(4)) as tvc_0
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)
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);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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2 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (3),(4)) `tvc_0` join `test`.`t2`) where `test`.`t2`.`b` = `tvc_0`.`3`
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# derived table with IN-predicate
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select * from
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(
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select *
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from t1
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where a in (1,2)
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) as dr_table;
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a b
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1 2
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1 1
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2 5
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select * from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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) as dr_table;
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a b
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1 2
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1 1
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2 5
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explain extended select * from
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(
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select *
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from t1
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where a in (1,2)
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) as dr_table;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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explain extended select * from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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) as dr_table;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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# non-recursive CTE with IN-predicate
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with tvc_0 as
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(
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select *
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from t1
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where a in (1,2)
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)
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select * from tvc_0;
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a b
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1 2
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1 1
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2 5
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select * from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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) as dr_table;
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a b
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1 2
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1 1
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2 5
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explain extended with tvc_0 as
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(
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select *
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from t1
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where a in (1,2)
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)
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select * from tvc_0;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 with tvc_0 as (/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` in (1,2))/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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explain extended select * from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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) as dr_table;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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# VIEW with IN-predicate
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create view v1 as
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select *
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from t1
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where a in (1,2);
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create view v2 as
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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;
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select * from v1;
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a b
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1 2
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1 1
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2 5
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select * from v2;
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a b
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1 2
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1 1
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2 5
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explain extended select * from v1;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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explain extended select * from v2;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
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drop view v1,v2;
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# subselect defined by derived table with IN-predicate
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select * from t1
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where a in
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(
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select 1
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from
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(
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select *
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from t1
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where a in (1,2)
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)
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as dr_table
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);
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a b
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1 2
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1 1
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select * from t1
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where a in
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(
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select 1
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from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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)
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as dr_table
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);
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a b
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1 2
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1 1
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explain extended select * from t1
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where a in
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(
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select 1
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from
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(
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select *
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from t1
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where a in (1,2)
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)
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as dr_table
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);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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2 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
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2 MATERIALIZED t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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5 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0` join `test`.`t1`) where `test`.`t1`.`a` = 1 and `test`.`t1`.`a` = `tvc_0`.`1`
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explain extended select * from t1
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where a in
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(
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select 1
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from
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(
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select *
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from t1
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where a in
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(
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select *
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from (values (1),(2))
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as tvc_0
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)
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)
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as dr_table
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);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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2 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
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2 MATERIALIZED t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
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5 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0` join `test`.`t1`) where `test`.`t1`.`a` = 1 and `test`.`t1`.`a` = `tvc_0`.`1`
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# derived table with IN-predicate and group by
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select * from
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(
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select max(a),b
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from t1
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where b in (3,5)
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group by b
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) as dr_table;
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max(a) b
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2 5
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select * from
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(
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select max(a),b
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from t1
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where b in
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(
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select *
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from (values (3),(5))
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as tvc_0
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)
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group by b
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) as dr_table;
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max(a) b
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2 5
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explain extended select * from
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(
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select max(a),b
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from t1
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where b in (3,5)
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group by b
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|
) as dr_table;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 12 100.00
|
|
2 DERIVED t1 ALL NULL NULL NULL NULL 6 100.00 Using temporary; Using filesort
|
|
2 DERIVED <subquery3> eq_ref distinct_key distinct_key 4 func 1 100.00
|
|
3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
|
|
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `dr_table`.`max(a)` AS `max(a)`,`dr_table`.`b` AS `b` from (/* select#2 */ select max(`test`.`t1`.`a`) AS `max(a)`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (3),(5)) `tvc_0`) where 1 group by `test`.`t1`.`b`) `dr_table`
|
|
explain extended select * from
|
|
(
|
|
select max(a),b
|
|
from t1
|
|
where b in
|
|
(
|
|
select *
|
|
from (values (3),(5))
|
|
as tvc_0
|
|
)
|
|
group by b
|
|
) as dr_table;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 12 100.00
|
|
2 DERIVED t1 ALL NULL NULL NULL NULL 6 100.00 Using temporary; Using filesort
|
|
2 DERIVED <subquery3> eq_ref distinct_key distinct_key 4 func 1 100.00
|
|
3 MATERIALIZED <derived4> ALL NULL NULL NULL NULL 2 100.00
|
|
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `dr_table`.`max(a)` AS `max(a)`,`dr_table`.`b` AS `b` from (/* select#2 */ select max(`test`.`t1`.`a`) AS `max(a)`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (3),(5)) `tvc_0`) where 1 group by `test`.`t1`.`b`) `dr_table`
|
|
# prepare statement
|
|
prepare stmt from "select * from t1 where a in (1,2)";
|
|
execute stmt;
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
execute stmt;
|
|
a b
|
|
1 2
|
|
1 1
|
|
2 5
|
|
deallocate prepare stmt;
|
|
# use inside out access from tvc rows
|
|
set @@in_subquery_conversion_threshold= default;
|
|
select * from t3 where a in (1,4,10);
|
|
a b
|
|
1 abc
|
|
1 todd
|
|
1 sm
|
|
4 yq
|
|
10 abc
|
|
explain extended select * from t3 where a in (1,4,10);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 range idx idx 5 NULL 5 100.00 Using index condition
|
|
Warnings:
|
|
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t3` where `test`.`t3`.`a` in (1,4,10)
|
|
set @@in_subquery_conversion_threshold= 2;
|
|
select * from t3 where a in (1,4,10);
|
|
a b
|
|
1 abc
|
|
1 todd
|
|
1 sm
|
|
4 yq
|
|
10 abc
|
|
explain extended select * from t3 where a in (1,4,10);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
|
|
1 PRIMARY t3 ref idx idx 5 tvc_0.1 3 100.00
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t3` semi join ((values (1),(4),(10)) `tvc_0`) where `test`.`t3`.`a` = `tvc_0`.`1`
|
|
# use vectors in IN predeicate
|
|
set @@in_subquery_conversion_threshold= 4;
|
|
select * from t1 where (a,b) in ((1,2),(3,4));
|
|
a b
|
|
1 2
|
|
explain extended select * from t1 where (a,b) in ((1,2),(3,4));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1,2),(3,4)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1` and `test`.`t1`.`b` = `tvc_0`.`2`
|
|
set @@in_subquery_conversion_threshold= 2;
|
|
# trasformation works for the one IN predicate and doesn't work for the other
|
|
set @@in_subquery_conversion_threshold= 5;
|
|
select * from t2
|
|
where (a,b) in ((1,2),(8,9)) and
|
|
(a,c) in ((1,3),(8,0),(5,1));
|
|
a b c
|
|
1 2 3
|
|
8 9 0
|
|
explain extended select * from t2
|
|
where (a,b) in ((1,2),(8,9)) and
|
|
(a,c) in ((1,3),(8,0),(5,1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t2` semi join ((values (1,3),(8,0),(5,1)) `tvc_0`) where `test`.`t2`.`a` = `tvc_0`.`1` and `test`.`t2`.`c` = `tvc_0`.`3` and (`tvc_0`.`1`,`test`.`t2`.`b`) in (<cache>((1,2)),<cache>((8,9)))
|
|
set @@in_subquery_conversion_threshold= 2;
|
|
#
|
|
# mdev-14281: conversion of NOT IN predicate into subquery predicate
|
|
#
|
|
select * from t1
|
|
where (a,b) not in ((1,2),(8,9), (5,1));
|
|
a b
|
|
4 6
|
|
9 7
|
|
1 1
|
|
2 5
|
|
7 8
|
|
select * from t1
|
|
where (a,b) not in (select * from (values (1,2),(8,9), (5,1)) as tvc_0);
|
|
a b
|
|
4 6
|
|
9 7
|
|
1 1
|
|
2 5
|
|
7 8
|
|
explain extended select * from t1
|
|
where (a,b) not in ((1,2),(8,9), (5,1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`,`test`.`t1`.`b`>(<in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`b`),(`test`.`t1`.`a`,`test`.`t1`.`b`) in ( <materialize> (/* select#2 */ select `tvc_0`.`1`,`tvc_0`.`2` from (values (1,2),(8,9),(5,1)) `tvc_0` ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`1` and `test`.`t1`.`b` = `<subquery2>`.`2`))))
|
|
explain extended select * from t1
|
|
where (a,b) not in (select * from (values (1,2),(8,9), (5,1)) as tvc_0);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`,`test`.`t1`.`b`>(<in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`b`),(`test`.`t1`.`a`,`test`.`t1`.`b`) in ( <materialize> (/* select#2 */ select `tvc_0`.`1`,`tvc_0`.`2` from (values (1,2),(8,9),(5,1)) `tvc_0` ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`1` and `test`.`t1`.`b` = `<subquery2>`.`2`))))
|
|
select * from t1
|
|
where b < 7 and (a,b) not in ((1,2),(8,9), (5,1));
|
|
a b
|
|
4 6
|
|
1 1
|
|
2 5
|
|
explain extended select * from t1
|
|
where b < 7 and (a,b) not in ((1,2),(8,9), (5,1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`b` < 7 and !<expr_cache><`test`.`t1`.`a`,`test`.`t1`.`b`>(<in_optimizer>((`test`.`t1`.`a`,`test`.`t1`.`b`),(`test`.`t1`.`a`,`test`.`t1`.`b`) in ( <materialize> (/* select#2 */ select `tvc_0`.`1`,`tvc_0`.`2` from (values (1,2),(8,9),(5,1)) `tvc_0` ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`1` and `test`.`t1`.`b` = `<subquery2>`.`2`))))
|
|
select * from t2
|
|
where (a,c) not in ((1,2),(8,9), (5,1));
|
|
a b c
|
|
1 2 3
|
|
5 1 2
|
|
4 3 7
|
|
8 9 0
|
|
10 7 1
|
|
explain extended select * from t2
|
|
where (a,c) not in ((1,2),(8,9), (5,1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t2` where !<expr_cache><`test`.`t2`.`a`,`test`.`t2`.`c`>(<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`c`),(`test`.`t2`.`a`,`test`.`t2`.`c`) in ( <materialize> (/* select#2 */ select `tvc_0`.`1`,`tvc_0`.`2` from (values (1,2),(8,9),(5,1)) `tvc_0` ), <primary_index_lookup>(`test`.`t2`.`a` in <temporary table> on distinct_key where `test`.`t2`.`a` = `<subquery2>`.`1` and `test`.`t2`.`c` = `<subquery2>`.`2`))))
|
|
drop table t1, t2, t3;
|
|
set @@in_subquery_conversion_threshold= default;
|