mirror of
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180065ebb0
by introducing new Item::precedence() method and using it to decide whether parentheses are required
986 lines
41 KiB
Plaintext
986 lines
41 KiB
Plaintext
set @save_optimizer_switch=@@optimizer_switch;
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-------------------------------
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Part 1: Feature tests.
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-------------------------------
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Default for all tests.
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set @@optimizer_switch = "materialization=on,in_to_exists=off,semijoin=off,subquery_cache=off";
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set @test_default_opt_switch = @@optimizer_switch;
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set @in_exists = "materialization=off,in_to_exists=on,semijoin=off,subquery_cache=off";
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-------------------------------------------------------------------------
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Schema requires partial matching, but data analysis discoveres there is
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no need. This is possible only if all outer columns are not NULL.
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-------------------------------------------------------------------------
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create table t1 (a1 char(8) not null, a2 char(8) not null);
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create table t2 (b1 char(8), b2 char(8));
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insert into t1 values ('1 - 00', '2 - 00');
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insert into t1 values ('1 - 01', '2 - 01');
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insert into t2 values ('1 - 00', '2 - 00');
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insert into t2 values ('1 - 01', NULL );
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insert into t2 values (NULL , '2 - 02');
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insert into t2 values (NULL , NULL );
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insert into t2 values ('1 - 02', '2 - 02');
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select * from t1
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where (a1, a2) not in (select * from t2 where b1 is not null and b2 is not null);
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a1 a2
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1 - 01 2 - 01
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select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
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a1 a2 in_res
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1 - 00 2 - 00 0
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1 - 01 2 - 01 NULL
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drop table t1, t2;
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-------------------------------------------------------------------------
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NULLs in the outer columns, no NULLs in the suqbuery
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-------------------------------------------------------------------------
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create table t1 (a1 char(8), a2 char(8));
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create table t2 (b1 char(8) not null, b2 char(8) not null);
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insert into t1 values (NULL , '2 - 00');
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insert into t1 values ('1 - 01', '2 - 01');
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insert into t1 values (NULL , NULL );
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insert into t2 values ('1 - 00', '2 - 00');
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insert into t2 values ('1 - 01', '2 - 01');
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insert into t2 values ('1 - 02', '2 - 00');
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select * from t1
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where (a1, a2) not in (select * from t2 where b1 is not null and b2 is not null);
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a1 a2
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select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
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a1 a2 in_res
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NULL 2 - 00 NULL
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1 - 01 2 - 01 0
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NULL NULL NULL
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select * from t1
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where (a1, a2) in (select * from t2 where b1 is not null and b2 is not null);
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a1 a2
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1 - 01 2 - 01
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select a1, a2, (a1, a2) in (select * from t2) as in_res from t1;
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a1 a2 in_res
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NULL 2 - 00 NULL
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1 - 01 2 - 01 1
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NULL NULL NULL
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drop table t1, t2;
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-------------------------------------------------------------------------
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NULLs in the outer column, NULLs in the subquery, there is
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no value match in any column, but there is a partial match
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such that some of the matching NULLs are in the outer columns,
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the other NULLs are in the inner columns.
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-------------------------------------------------------------------------
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create table t1 (a1 char(1), a2 char(1), a3 char(1));
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create table t2 (b1 char(1), b2 char(1), b3 char(1));
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insert into t1 values ('c', NULL, 'a');
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insert into t2 values (NULL, 'x', NULL);
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insert into t2 values (NULL, 'y', NULL);
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insert into t2 values ('o', 'z', 'p');
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set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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c NULL a NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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c NULL a NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch=@in_exists;
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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c NULL a NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch = @test_default_opt_switch;
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drop table t1, t2;
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create table t1 (a1 char(1), a2 char(1) not null, a3 char(1));
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create table t2 (b1 char(1), b2 char(1), b3 char(1));
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insert into t1 values (NULL, 'y', NULL);
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insert into t2 values ('v', 'x', NULL);
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insert into t2 values (NULL, 'y', 'w');
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set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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NULL y NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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NULL y NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch=@in_exists;
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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NULL y NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch = @test_default_opt_switch;
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drop table t1, t2;
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-------------------------------------------------------------------------
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There is only one column in the subquery to complement the NULLs in the
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outer reference. It is a NULL column, so a match is guaranteed.
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-------------------------------------------------------------------------
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create table t1 (a1 char(1), a2 char(1), a3 char(1));
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create table t2 (b1 char(1), b2 char(1), b3 char(1));
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insert into t1 values (NULL, 'g', NULL);
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insert into t2 values ('z', NULL, 'y');
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insert into t2 values (NULL, 'z', 'y');
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set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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NULL g NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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NULL g NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch=@in_exists;
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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NULL g NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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set @@optimizer_switch = @test_default_opt_switch;
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drop table t1, t2;
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-------------------------------------------------------------------------
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The intersection of the NULL bitmaps is empty because the ranges
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of NULL bits do not overlap.
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-------------------------------------------------------------------------
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create table t1 (a1 char(1), a2 char(1), a3 char(1));
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create table t2 (b1 char(1), b2 char(1), b3 char(1));
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insert into t1 values ('b', 'g', NULL);
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insert into t2 values ('z', NULL, 'y');
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insert into t2 values (NULL, 'z', 'y');
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set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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b g NULL 0
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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b g NULL
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set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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b g NULL 0
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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b g NULL
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set @@optimizer_switch=@in_exists;
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EXPLAIN
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
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a1 a2 a3 in_res
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b g NULL 0
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
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a1 a2 a3
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b g NULL
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drop table t1, t2;
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-------------------------------------------------------------------------
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The intersection of the NULL bitmaps is non-empty, and there is a
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non-NULL column.
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-------------------------------------------------------------------------
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create table t1 (a1 char(1), a2 char(1), a3 char(1) not null, a4 char(10));
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create table t2 (b1 char(1), b2 char(1), b3 char(1), b4 char(1));
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insert into t1 values ('a', 'g', 'x', NULL);
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insert into t2 values ('z', NULL, 'y', 'x');
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insert into t2 values (NULL, NULL, 'x', 'y');
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insert into t2 values ('x', 'w', 'z', NULL);
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set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
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a1 a2 a3 a4 in_res
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a g x NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
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a1 a2 a3 a4
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set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
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EXPLAIN
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SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
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a1 a2 a3 a4 in_res
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a g x NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
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a1 a2 a3 a4
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set @@optimizer_switch=@in_exists;
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EXPLAIN
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SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
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a1 a2 a3 a4 in_res
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a g x NULL NULL
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EXPLAIN
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SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 system NULL NULL NULL NULL 1
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 Using where
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SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
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a1 a2 a3 a4
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drop table t1, t2;
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-------------------------------------------------------------------------
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Value match in one row, but the NULL complement match in another.
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The result must be false.
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-------------------------------------------------------------------------
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create table t1 (a1 char(2), a2 char(1), a3 char(1) not null, a4 char(10));
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|
create table t2 (b1 char(2), b2 char(1), b3 char(1), b4 char(1));
|
|
insert into t1 values ('99', NULL, 'j', 'f');
|
|
insert into t2 values ('01', NULL, 'y', NULL);
|
|
insert into t2 values ('02', NULL, 'x', 'y');
|
|
insert into t2 values ('03', 'q', 'y', 'x');
|
|
insert into t2 values (NULL, 'q', 'm', 'p');
|
|
insert into t2 values ('m', 'z', 'j', NULL);
|
|
insert into t2 values (NULL, 'z', 'b', NULL);
|
|
insert into t2 values (NULL, 'z', 'a', NULL);
|
|
insert into t2 values ('34', 'q', 'y', 'x');
|
|
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 8 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
99 NULL j f 0
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 8 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
99 NULL j f
|
|
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 8 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
99 NULL j f 0
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 8 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
99 NULL j f
|
|
set @@optimizer_switch=@in_exists;
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 8 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
99 NULL j f 0
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 8 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
99 NULL j f
|
|
drop table t1, t2;
|
|
-------------------------------------------------------------------------
|
|
Test the intersection of larger number of rows with NULL, such that
|
|
the number is at the boundary 32. This test is based on the implementation
|
|
of MY_BITMAP which uses 32 bit words, and the intersection operation works
|
|
by intersecting the bitmap word by word.
|
|
-------------------------------------------------------------------------
|
|
create table t1 (a1 char(2), a2 char(2), a3 char(1), a4 char(10)) ENGINE=MyISAM;
|
|
create table t2 (b1 char(2), b2 char(2), b3 char(1), b4 char(1)) ENGINE=MyISAM;
|
|
insert into t1 values (NULL, '98', NULL, 'b');
|
|
insert into t1 values (NULL, '99', NULL, 'c');
|
|
insert into t2 values ('00', 'rr', 'y', NULL);
|
|
insert into t2 values ('01', 'rr', 'y', NULL);
|
|
insert into t2 values ('02', NULL, 'x', 'y');
|
|
insert into t2 values ('03', 'qq', 'y', 'x');
|
|
insert into t2 values ('04', 'qq', 'm', 'p');
|
|
insert into t2 values ('05', 'rr', 'y', NULL);
|
|
insert into t2 values ('06', NULL, 'x', 'y');
|
|
insert into t2 values ('07', 'qq', 'y', 'x');
|
|
insert into t2 values ('08', 'qq', 'm', 'q');
|
|
insert into t2 values ('09', 'rr', 'y', NULL);
|
|
insert into t2 values ('10', NULL, 'x', 'y');
|
|
insert into t2 values ('11', 'qq', 'y', 'x');
|
|
insert into t2 values ('12', 'qq', 'm', 'k');
|
|
insert into t2 values ('13', 'rr', 'y', NULL);
|
|
insert into t2 values ('14', NULL, 'x', 'y');
|
|
insert into t2 values ('15', 'qq', 'y', 'x');
|
|
insert into t2 values ('16', 'qq', 'm', 's');
|
|
insert into t2 values ('17', 'rr', 'y', NULL);
|
|
insert into t2 values ('18', NULL, 'x', 'y');
|
|
insert into t2 values ('19', 'qq', 'y', 'x');
|
|
insert into t2 values ('20', 'qq', 'm', 't');
|
|
insert into t2 values ('21', 'rr', 'y', NULL);
|
|
insert into t2 values ('22', NULL, 'x', 'y');
|
|
insert into t2 values ('23', 'qq', 'y', 'x');
|
|
insert into t2 values ('24', 'qq', 'm', 'u');
|
|
insert into t2 values ('25', 'rr', 'y', NULL);
|
|
insert into t2 values ('26', NULL, 'x', 'y');
|
|
insert into t2 values ('27', 'qq', 'y', 'x');
|
|
insert into t2 values ('28', 'qq', 'm', 'y');
|
|
insert into t2 values ('29', 'rr', 'y', NULL);
|
|
insert into t2 values ('30', NULL, 'x', 'z');
|
|
insert into t2 values ('31', 'ss', 'h', NULL);
|
|
insert into t2 values ('32', 'vv', 'i', NULL);
|
|
the only partial matching row
|
|
insert into t2 values ('33', NULL, 'j', NULL);
|
|
insert into t2 values ('34', 'qq', 'y', 'x');
|
|
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
NULL 98 NULL b NULL
|
|
NULL 99 NULL c NULL
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
NULL 98 NULL b NULL
|
|
NULL 99 NULL c NULL
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
set @@optimizer_switch=@in_exists;
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
NULL 98 NULL b NULL
|
|
NULL 99 NULL c NULL
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
change the mathcing row to be the last one in the first bitmap word
|
|
update t2 set b2 = 'zz' where b1 = 33;
|
|
update t2 set b2 = NULL where b1 = 31;
|
|
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
NULL 98 NULL b NULL
|
|
NULL 99 NULL c NULL
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
NULL 98 NULL b NULL
|
|
NULL 99 NULL c NULL
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
set @@optimizer_switch=@in_exists;
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
NULL 98 NULL b NULL
|
|
NULL 99 NULL c NULL
|
|
EXPLAIN
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 35 Using where
|
|
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
|
|
a1 a2 a3 a4
|
|
drop table t1, t2;
|
|
-------------------------------------------------------------------------
|
|
All columns require partial matching (no non-null columns)
|
|
-------------------------------------------------------------------------
|
|
TODO
|
|
-------------------------------------------------------------------------
|
|
Both non-NULL columns and columns with NULLs
|
|
-------------------------------------------------------------------------
|
|
TODO
|
|
-------------------------------------------------------------------------
|
|
Covering NULL rows
|
|
-------------------------------------------------------------------------
|
|
create table t1 (a1 char(8), a2 char(8));
|
|
create table t2 (b1 char(8), b2 char(8));
|
|
insert into t1 values ('1 - 00', '2 - 00');
|
|
insert into t1 values ('1 - 01', '2 - 01');
|
|
insert into t2 values ('1 - 01', NULL );
|
|
insert into t2 values (NULL , '2 - 02');
|
|
insert into t2 values (NULL , NULL );
|
|
insert into t2 values ('1 - 02', '2 - 02');
|
|
select * from t1
|
|
where (a1, a2) not in (select * from t2);
|
|
a1 a2
|
|
select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
|
|
a1 a2 in_res
|
|
1 - 00 2 - 00 NULL
|
|
1 - 01 2 - 01 NULL
|
|
insert into t2 values ('1 - 01', '2 - 01');
|
|
select * from t1
|
|
where (a1, a2) not in (select * from t2);
|
|
a1 a2
|
|
select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
|
|
a1 a2 in_res
|
|
1 - 00 2 - 00 NULL
|
|
1 - 01 2 - 01 0
|
|
select * from t1
|
|
where (a1, a2) in (select * from t2);
|
|
a1 a2
|
|
1 - 01 2 - 01
|
|
select a1, a2, (a1, a2) in (select * from t2) as in_res from t1;
|
|
a1 a2 in_res
|
|
1 - 00 2 - 00 NULL
|
|
1 - 01 2 - 01 1
|
|
drop table t1, t2;
|
|
-------------------------------------------------------------------------
|
|
Covering NULL columns
|
|
-------------------------------------------------------------------------
|
|
this case affects only the rowid-merge algorithm
|
|
set @@optimizer_switch="partial_match_rowid_merge=on,partial_match_table_scan=off";
|
|
create table t1 (a1 char(8) not null, a2 char(8), a3 char(8) not null);
|
|
create table t2 (b1 char(8) not null, b2 char(8), b3 char(8) not null);
|
|
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
|
|
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
|
|
insert into t2 values ('1 - 01', NULL, '3 - x1');
|
|
insert into t2 values ('1 - 02', NULL, '3 - 02');
|
|
insert into t2 values ('1 - 00', NULL, '3 - 00');
|
|
select * from t1
|
|
where (a1, a2, a3) not in (select * from t2);
|
|
a1 a2 a3
|
|
1 - 01 2 - 01 3 - 01
|
|
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 1
|
|
select * from t1
|
|
where (a1, a2, a3) in (select * from t2);
|
|
a1 a2 a3
|
|
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 0
|
|
drop table t1, t2;
|
|
create table t1 (a1 char(8), a2 char(8), a3 char(8) not null);
|
|
create table t2 (b1 char(8), b2 char(8), b3 char(8) not null);
|
|
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
|
|
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
|
|
insert into t2 values (NULL, NULL, '3 - x1');
|
|
insert into t2 values (NULL, NULL, '3 - 02');
|
|
insert into t2 values (NULL, NULL, '3 - 00');
|
|
select * from t1
|
|
where (a1, a2, a3) not in (select * from t2);
|
|
a1 a2 a3
|
|
1 - 01 2 - 01 3 - 01
|
|
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 1
|
|
select * from t1
|
|
where (a1, a2, a3) in (select * from t2);
|
|
a1 a2 a3
|
|
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 0
|
|
drop table t1, t2;
|
|
-------------------------------------------------------------------------
|
|
Covering NULL row, and a NULL column
|
|
-------------------------------------------------------------------------
|
|
create table t1 (a1 char(8) not null, a2 char(8), a3 char(8));
|
|
create table t2 (b1 char(8), b2 char(8), b3 char(8));
|
|
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
|
|
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
|
|
insert into t2 values ('1 - 01', NULL, '3 - x1');
|
|
insert into t2 values (NULL , NULL, NULL );
|
|
insert into t2 values ('1 - 00', NULL, '3 - 00');
|
|
select * from t1
|
|
where (a1, a2, a3) not in (select * from t2);
|
|
a1 a2 a3
|
|
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 NULL
|
|
select * from t1
|
|
where (a1, a2, a3) in (select * from t2);
|
|
a1 a2 a3
|
|
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 NULL
|
|
drop table t1, t2;
|
|
-------------------------------------------------------------------------
|
|
Covering NULL row, and covering NULL columns
|
|
-------------------------------------------------------------------------
|
|
create table t1 (a1 char(8) not null, a2 char(8), a3 char(8));
|
|
create table t2 (b1 char(8), b2 char(8), b3 char(8));
|
|
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
|
|
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
|
|
insert into t2 values (NULL, NULL, NULL);
|
|
insert into t2 values (NULL, NULL, NULL);
|
|
select * from t1
|
|
where (a1, a2, a3) not in (select * from t2);
|
|
a1 a2 a3
|
|
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 NULL
|
|
select * from t1
|
|
where (a1, a2, a3) in (select * from t2);
|
|
a1 a2 a3
|
|
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
|
|
a1 a2 a3 in_res
|
|
1 - 00 2 - 00 3 - 00 NULL
|
|
1 - 01 2 - 01 3 - 01 NULL
|
|
drop table t1, t2;
|
|
-------------------------------------------------------------------------
|
|
Small buffer for the rowid_merge partial match algorithm that forces
|
|
reverting to table scan partial match.
|
|
-------------------------------------------------------------------------
|
|
set @save_rowid_merge_buff_size = @@rowid_merge_buff_size;
|
|
set @@rowid_merge_buff_size = 0;
|
|
create table t1 (a1 char(2), a2 char(2), a3 char(1), a4 char(10));
|
|
create table t2 (b1 char(2), b2 char(2), b3 char(1), b4 char(1));
|
|
insert into t1 values (NULL, '98', NULL, 'b');
|
|
insert into t1 values (NULL, '99', NULL, 'c');
|
|
insert into t2 values ('00', 'rr', 'y', NULL);
|
|
insert into t2 values ('01', 'rr', 'y', NULL);
|
|
insert into t2 values ('02', NULL, 'x', 'y');
|
|
insert into t2 values ('03', 'qq', 'y', 'x');
|
|
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
EXPLAIN
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 4 Using where
|
|
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
|
|
a1 a2 a3 a4 in_res
|
|
NULL 98 NULL b 0
|
|
NULL 99 NULL c 0
|
|
drop table t1, t2;
|
|
set @@rowid_merge_buff_size = @save_rowid_merge_buff_size;
|
|
-------------------------------
|
|
Part 2: Test cases for bugs.
|
|
-------------------------------
|
|
drop table if exists t1, t2;
|
|
#
|
|
# LP BUG#608744
|
|
#
|
|
set @@optimizer_switch="materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=off";
|
|
create table t1 (a1 char(1), a2 char(1));
|
|
insert into t1 values (NULL, 'b');
|
|
create table t2 (b1 char(1), b2 char(2));
|
|
insert into t2 values ('a','b'), ('c', 'd');
|
|
select * from t1 where (a1, a2) NOT IN (select b1, b2 from t2);
|
|
a1 a2
|
|
drop table t1,t2;
|
|
#
|
|
# LP BUG#601156
|
|
#
|
|
CREATE TABLE t1 (a1 int DEFAULT NULL, a2 int DEFAULT NULL);
|
|
INSERT INTO t1 VALUES (NULL,2);
|
|
INSERT INTO t1 VALUES (4,NULL);
|
|
CREATE TABLE t2 (b1 int DEFAULT NULL, b2 int DEFAULT NULL);
|
|
INSERT INTO t2 VALUES (6,NULL);
|
|
INSERT INTO t2 VALUES (NULL,0);
|
|
set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on';
|
|
set @tmp_optimizer_switch=@@optimizer_switch;
|
|
set optimizer_switch='derived_merge=off,derived_with_keys=off';
|
|
EXPLAIN EXTENDED
|
|
SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00
|
|
2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 100.00
|
|
Warnings:
|
|
Note 1003 select `table1`.`a1` AS `a1`,`table1`.`a2` AS `a2` from (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where !<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b2` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where `test`.`t1`.`a1` = `<subquery3>`.`b2`)))) `table1`
|
|
set optimizer_switch=@tmp_optimizer_switch;
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# LP BUG#613009 Crash in Ordered_key::get_field_idx
|
|
#
|
|
set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
create table t1 (a1 char(3) DEFAULT NULL, a2 char(3) DEFAULT NULL);
|
|
insert into t1 values (NULL, 'a21'), (NULL, 'a22');
|
|
explain select * from t1 where (a1, a2) not in (select a1, a2 from t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
|
|
select * from t1 where (a1, a2) not in (select a1, a2 from t1);
|
|
a1 a2
|
|
drop table t1;
|
|
#
|
|
# LP BUG#680058 void Ordered_key::add_key(rownum_t):
|
|
# Assertion `key_buff_elements && cur_key_idx < key_buff_elements' failed
|
|
#
|
|
create table t1 (f1 char(1), f2 char(1));
|
|
insert into t1 values ('t', '0'), ('0', 't');
|
|
create table t2 (f3 char(1), f4 char(1));
|
|
insert into t2 values ('t', NULL), ('t', NULL), ('d', 'y');
|
|
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,semijoin=off';
|
|
select * from t1 where (f1, f2) not in (select * from t2);
|
|
f1 f2
|
|
0 t
|
|
drop table t1, t2;
|
|
#
|
|
# LP BUG#809245 Second assertion `bit < (map)->n_bits' with partial_match_merge
|
|
#
|
|
CREATE TABLE t1 (d varchar(32)) ;
|
|
INSERT INTO t1 VALUES ('r');
|
|
CREATE TABLE t2 ( a int, c varchar(32)) ;
|
|
INSERT INTO t2 VALUES (5,'r');
|
|
CREATE TABLE t3 ( a int NOT NULL , d varchar(32)) ;
|
|
INSERT INTO t3 VALUES (10,'g');
|
|
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,in_to_exists=off';
|
|
EXPLAIN SELECT *
|
|
FROM t1
|
|
WHERE (t1.d , t1.d) NOT IN (
|
|
SELECT t3.d , t2.c
|
|
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 MATERIALIZED t3 system NULL NULL NULL NULL 1
|
|
2 MATERIALIZED t2 system NULL NULL NULL NULL 1
|
|
SELECT *
|
|
FROM t1
|
|
WHERE (t1.d , t1.d) NOT IN (
|
|
SELECT t3.d , t2.c
|
|
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
|
|
d
|
|
r
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on';
|
|
EXPLAIN SELECT *
|
|
FROM t1
|
|
WHERE (t1.d , t1.d) NOT IN (
|
|
SELECT t3.d , t2.c
|
|
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t3 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1
|
|
SELECT *
|
|
FROM t1
|
|
WHERE (t1.d , t1.d) NOT IN (
|
|
SELECT t3.d , t2.c
|
|
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
|
|
d
|
|
r
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LP BUG#809266 Diverging results with partial_match_rowid_merge=on
|
|
#
|
|
CREATE TABLE t1 (c int) ;
|
|
INSERT INTO t1 VALUES (0),(0);
|
|
CREATE TABLE t2 (a int, b int) ;
|
|
INSERT INTO t2 VALUES (6,3), (9,NULL);
|
|
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,in_to_exists=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
|
|
c
|
|
0
|
|
0
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
|
|
c
|
|
0
|
|
0
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
|
|
c
|
|
0
|
|
0
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
|
|
c
|
|
0
|
|
0
|
|
drop table t1, t2;
|
|
#
|
|
# LP BUG#856152 Wrong result with NOT IN subquery and partial_match_rowid_merge
|
|
#
|
|
CREATE TABLE t1 ( f1 integer NOT NULL , f2 integer) ;
|
|
INSERT INTO t1 VALUES (3,3),(48,NULL),(49,1);
|
|
CREATE TABLE t2 ( f3 int) ;
|
|
INSERT INTO t2 VALUES (5);
|
|
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
EXPLAIN SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3
|
|
SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
|
|
f3
|
|
5
|
|
set @@optimizer_switch='in_to_exists=on,materialization=off';
|
|
EXPLAIN SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where
|
|
SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
|
|
f3
|
|
5
|
|
drop table t1, t2;
|
|
#
|
|
# LP BUG#869036 Wrong result with in_to_exists=ON and NOT IN
|
|
#
|
|
create table outer_sq (f1 char(1), f2 char(1));
|
|
insert into outer_sq values (NULL, 'c'), ('g', 'c');
|
|
create table inner_sq (f3 char(1), f4 char(1));
|
|
insert into inner_sq values(null, 'i'), ('v', null);
|
|
All three strategies below must produce the same result.
|
|
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
SELECT outer_sq.*, (f1, f2) IN (select * from inner_sq) from outer_sq;
|
|
f1 f2 (f1, f2) IN (select * from inner_sq)
|
|
NULL c NULL
|
|
g c 0
|
|
SELECT * from outer_sq where (f1, f2) NOT IN (select * from inner_sq);
|
|
f1 f2
|
|
g c
|
|
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=off,partial_match_table_scan=on';
|
|
SELECT outer_sq.*, (f1, f2) IN (select * from inner_sq) from outer_sq;
|
|
f1 f2 (f1, f2) IN (select * from inner_sq)
|
|
NULL c NULL
|
|
g c 0
|
|
SELECT * from outer_sq where (f1, f2) NOT IN (select * from inner_sq);
|
|
f1 f2
|
|
g c
|
|
set @@optimizer_switch='in_to_exists=on,materialization=off';
|
|
SELECT outer_sq.*, (f1, f2) IN (select * from inner_sq) from outer_sq;
|
|
f1 f2 (f1, f2) IN (select * from inner_sq)
|
|
NULL c NULL
|
|
g c 0
|
|
SELECT * from outer_sq where (f1, f2) NOT IN (select * from inner_sq);
|
|
f1 f2
|
|
g c
|
|
drop table outer_sq, inner_sq;
|
|
#
|
|
# LP BUG#893486 Wrong result with partial_match_rowid_merge , NOT IN , NULLs
|
|
#
|
|
CREATE TABLE t1 (a int, b int);
|
|
INSERT INTO t1 VALUES (0,NULL),(2,NULL);
|
|
CREATE TABLE t2 (c int, d int);
|
|
INSERT INTO t2 VALUES (2,3),(4,5),(6, NULL);
|
|
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,in_to_exists=off';
|
|
EXPLAIN SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3
|
|
SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2);
|
|
a b
|
|
0 NULL
|
|
SELECT a, b, (a, b) NOT IN (SELECT c, d FROM t2) subq_res FROM t1;
|
|
a b subq_res
|
|
0 NULL 1
|
|
2 NULL NULL
|
|
EXPLAIN SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2 WHERE d is not NULL);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 3 Using where
|
|
SELECT * FROM t1 WHERE (a, b) NOT IN (SELECT c, d FROM t2 WHERE d is not NULL);
|
|
a b
|
|
0 NULL
|
|
SELECT a, b, (a, b) NOT IN (SELECT c, d FROM t2 WHERE d is not NULL) subq_res FROM t1;
|
|
a b subq_res
|
|
0 NULL 1
|
|
2 NULL NULL
|
|
drop table t1,t2;
|
|
set @@optimizer_switch=@save_optimizer_switch;
|