mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
2251 lines
89 KiB
Text
2251 lines
89 KiB
Text
drop table if exists t0,t1,t2,t3,t4,t5,t6;
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drop view if exists v1, v2;
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set @subselect4_tmp= @@optimizer_switch;
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set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on';
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set optimizer_switch='semijoin_with_cache=on';
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set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
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#
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# Bug #46791: Assertion failed:(table->key_read==0),function unknown
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# function,file sql_base.cc
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#
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CREATE TABLE t1 (a INT, b INT, KEY(a));
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INSERT INTO t1 VALUES (1,1),(2,2);
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CREATE TABLE t2 LIKE t1;
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INSERT INTO t2 VALUES (1,1),(2,2);
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CREATE TABLE t3 LIKE t1;
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# should have 1 impossible where and 2 dependent subqueries
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EXPLAIN
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SELECT 1 FROM t1
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WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3))
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ORDER BY count(*);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 index NULL a 5 NULL 2 Using where; Using index; Using temporary
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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3 DEPENDENT SUBQUERY t3 system NULL NULL NULL NULL 0 const row not found
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# should not crash the next statement
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SELECT 1 FROM t1
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WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3))
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ORDER BY count(*);
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1
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1
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# should not crash: the crash is caused by the previous statement
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SELECT 1;
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1
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1
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DROP TABLE t1,t2,t3;
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#
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# Bug #47106: Crash / segfault on adding EXPLAIN to a non-crashing
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# query
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#
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CREATE TABLE t1 (
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a INT,
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b INT,
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PRIMARY KEY (a),
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KEY b (b)
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);
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INSERT INTO t1 VALUES (1, 1), (2, 1);
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CREATE TABLE t2 LIKE t1;
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INSERT INTO t2 SELECT * FROM t1;
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CREATE TABLE t3 LIKE t1;
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INSERT INTO t3 SELECT * FROM t1;
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# Should not crash.
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# Should have 1 impossible where and 2 dependent subqs.
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EXPLAIN
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SELECT
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(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
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FROM t3 WHERE 1 = 0 GROUP BY 1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
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2 DEPENDENT SUBQUERY t1 index NULL PRIMARY 4 NULL 2 Using index
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2 DEPENDENT SUBQUERY t2 ALL b NULL NULL NULL 2 Range checked for each record (index map: 0x2)
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# should return 0 rows
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SELECT
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(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
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FROM t3 WHERE 1 = 0 GROUP BY 1;
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(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
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DROP TABLE t1,t2,t3;
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End of 5.0 tests.
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CREATE TABLE t1 (col_int_nokey int(11) NOT NULL, col_varchar_nokey varchar(1) NOT NULL) engine=myisam;
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INSERT INTO t1 VALUES (2,'s'),(0,'v'),(2,'s');
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CREATE TABLE t2 (
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pk int(11) NOT NULL AUTO_INCREMENT,
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`col_int_key` int(11) NOT NULL,
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col_varchar_key varchar(1) NOT NULL,
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PRIMARY KEY (pk),
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KEY `col_int_key` (`col_int_key`),
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KEY `col_varchar_key` (`col_varchar_key`)
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) ENGINE=MyISAM;
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INSERT INTO t2 VALUES (4,10,'g'), (5,20,'v');
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SELECT t1.col_int_nokey,(SELECT MIN( t2_a.col_int_key ) FROM t2 t2_a, t2 t2_b, t1 t1_a WHERE t1_a.col_varchar_nokey = t2_b.col_varchar_key and t1.col_int_nokey ) as sub FROM t1;
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col_int_nokey sub
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2 10
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0 NULL
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2 10
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SELECT t1.col_int_nokey,(SELECT MIN( t2_a.col_int_key ) +1 FROM t2 t2_a, t2 t2_b, t1 t1_a WHERE t1_a.col_varchar_nokey = t2_b.col_varchar_key and t1.col_int_nokey ) as sub FROM t1;
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col_int_nokey sub
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2 11
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0 NULL
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2 11
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DROP TABLE t1,t2;
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#
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# Bug#54568: create view cause Assertion failed: 0,
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# file .\item_subselect.cc, line 836
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#
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EXPLAIN SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1249 Select 2 was reduced during optimization
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DESCRIBE SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1249 Select 2 was reduced during optimization
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# None of the below should crash
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CREATE VIEW v1 AS SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
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CREATE VIEW v2 AS SELECT 1 LIKE '%' ESCAPE ( 1 IN ( SELECT 1 ) );
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DROP VIEW v1, v2;
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#
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# Bug#51070: Query with a NOT IN subquery predicate returns a wrong
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# result set
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#
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CREATE TABLE t1 ( a INT, b INT );
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INSERT INTO t1 VALUES ( 1, NULL ), ( 2, NULL );
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CREATE TABLE t2 ( c INT, d INT );
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INSERT INTO t2 VALUES ( NULL, 3 ), ( NULL, 4 );
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CREATE TABLE t3 ( e INT, f INT );
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INSERT INTO t3 VALUES ( NULL, NULL ), ( NULL, NULL );
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CREATE TABLE t4 ( a INT );
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INSERT INTO t4 VALUES (1), (2), (3);
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CREATE TABLE t5 ( a INT );
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INSERT INTO t5 VALUES (NULL), (2);
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SET @old_optimizer_switch = @@session.optimizer_switch;
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SET SESSION optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
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EXPLAIN
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SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 );
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id select_type table type possible_keys key key_len ref rows Extra
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x PRIMARY x x x x x x x x
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x DEPENDENT SUBQUERY x x x x x x x x
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SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 );
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a b
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EXPLAIN
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SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
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2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
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SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL;
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a b
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1 NULL
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2 NULL
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SELECT * FROM t1 WHERE ( a, b ) IN ( SELECT c, d FROM t2 ) IS NULL;
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a b
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1 NULL
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2 NULL
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SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS UNKNOWN;
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a b
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1 NULL
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2 NULL
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SELECT * FROM t1 WHERE (( a, b ) NOT IN ( SELECT c, d FROM t2 )) IS UNKNOWN;
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a b
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1 NULL
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2 NULL
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SELECT * FROM t1 WHERE 1 = 1 AND ( a, b ) NOT IN ( SELECT c, d FROM t2 );
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a b
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EXPLAIN
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SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 );
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id select_type table type possible_keys key key_len ref rows Extra
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x PRIMARY x x x x x x x x
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x DEPENDENT SUBQUERY x x x x x x x x
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SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 );
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a b
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EXPLAIN
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SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 );
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id select_type table type possible_keys key key_len ref rows Extra
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x PRIMARY x x x x x x x x
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x DEPENDENT SUBQUERY x x x x x x x x
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SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 );
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c d
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EXPLAIN
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SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 );
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id select_type table type possible_keys key key_len ref rows Extra
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x PRIMARY x x x x x x x x
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x DEPENDENT SUBQUERY x x x x x x x x
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SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 );
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e f
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EXPLAIN
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SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 );
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id select_type table type possible_keys key key_len ref rows Extra
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x PRIMARY x x x x x x x x
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x DEPENDENT SUBQUERY x x x x x x x x
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SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 );
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c d
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SELECT * FROM t1 WHERE ( a, b ) NOT IN
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( SELECT c, d FROM t2 WHERE c = 1 AND c <> 1 );
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a b
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1 NULL
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2 NULL
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SELECT * FROM t1 WHERE b NOT IN ( SELECT c FROM t2 WHERE c = 1 );
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a b
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1 NULL
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2 NULL
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SELECT * FROM t1 WHERE NULL NOT IN ( SELECT c FROM t2 WHERE c = 1 AND c <> 1 );
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a b
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1 NULL
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2 NULL
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SET SESSION optimizer_switch = @old_optimizer_switch;
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DROP TABLE t1, t2, t3, t4, t5;
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#
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# Bug#58207: invalid memory reads when using default column value and
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# tmptable needed
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#
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CREATE TABLE t(a VARCHAR(245) DEFAULT
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'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa');
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INSERT INTO t VALUES (''),(''),(''),(''),(''),(''),(''),(''),(''),(''),('');
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SELECT * FROM (SELECT default(a) FROM t GROUP BY a) d;
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default(a)
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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DROP TABLE t;
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#
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# LP BUG#1009187, MDEV-373, MYSQL bug#58628
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# Wrong result for a query with [NOT] IN subquery predicate if
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# the left part of the predicate is explicit NULL
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#
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CREATE TABLE t1 (pk INT NOT NULL, i INT NOT NULL);
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INSERT INTO t1 VALUES (0,10), (1,20), (2,30), (3,40);
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CREATE TABLE t2a (pk INT NOT NULL, i INT NOT NULL, PRIMARY KEY(i,pk));
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INSERT INTO t2a VALUES (0,0), (1,1), (2,2), (3,3);
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CREATE TABLE t2b (pk INT, i INT);
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INSERT INTO t2b VALUES (0,0), (1,1), (2,2), (3,3);
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CREATE TABLE t2c (pk INT NOT NULL, i INT NOT NULL);
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INSERT INTO t2c VALUES (0,0), (1,1), (2,2), (3,3);
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create index it2c on t2c (i,pk);
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CREATE TABLE t2d (pk INT NOT NULL, i INT NOT NULL, PRIMARY KEY(i));
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INSERT INTO t2d VALUES (0,0), (1,1), (2,2), (3,3);
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EXPLAIN
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2a unique_subquery PRIMARY PRIMARY 8 const,test.t1.pk 1 Using index; Using where; Full scan on NULL key
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
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pk i
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SELECT * FROM t1 WHERE 1+NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
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pk i
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SELECT * FROM t1 WHERE NULL IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk) IS UNKNOWN;
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pk i
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0 10
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1 20
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2 30
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3 40
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SELECT t1.pk, NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk) FROM t1;
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pk NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk)
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0 NULL
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1 NULL
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2 NULL
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3 NULL
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EXPLAIN
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2b ALL NULL NULL NULL NULL 4 Using where
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
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pk i
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SELECT * FROM t1 WHERE NULL IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk) IS UNKNOWN;
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pk i
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0 10
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1 20
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2 30
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3 40
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SELECT t1.pk, NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk) FROM t1;
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pk NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk)
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0 NULL
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1 NULL
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2 NULL
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3 NULL
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EXPLAIN
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2c index_subquery it2c it2c 8 const,test.t1.pk 2 Using index; Using where; Full scan on NULL key
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
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pk i
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SELECT * FROM t1 WHERE NULL IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk) IS UNKNOWN;
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pk i
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0 10
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1 20
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2 30
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3 40
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SELECT t1.pk, NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk) FROM t1;
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pk NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk)
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0 NULL
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1 NULL
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2 NULL
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3 NULL
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EXPLAIN
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2d const PRIMARY PRIMARY 4 const 1 Using where; Full scan on NULL key
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SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk);
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pk i
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SELECT * FROM t1 WHERE NULL IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk) IS UNKNOWN;
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pk i
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0 10
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1 20
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2 30
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3 40
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SELECT t1.pk, NULL NOT IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk) FROM t1;
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pk NULL NOT IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk)
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0 NULL
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1 NULL
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2 NULL
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3 NULL
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EXPLAIN
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2a eq_ref PRIMARY PRIMARY 8 const,test.t1.pk 1 Using where; Using index; Full scan on NULL key
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
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pk i
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0 10
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2 30
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3 40
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SELECT (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk) from t1;
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(NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk)
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1
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NULL
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1
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|
1
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EXPLAIN
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2b.i, t2b.pk FROM t2b WHERE t2b.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2b ALL NULL NULL NULL NULL 4 Using where
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2b.i, t2b.pk FROM t2b WHERE t2b.pk = t1.pk);
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pk i
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0 10
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2 30
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3 40
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SELECT (NULL, 1) NOT IN (SELECT t2b.i, t2b.pk FROM t2b WHERE t2b.pk = t1.pk) from t1;
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(NULL, 1) NOT IN (SELECT t2b.i, t2b.pk FROM t2b WHERE t2b.pk = t1.pk)
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1
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NULL
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1
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|
1
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EXPLAIN
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2c.i, t2c.pk FROM t2c WHERE t2c.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2c ref it2c it2c 8 const,test.t1.pk 2 Using where; Using index; Full scan on NULL key
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2c.i, t2c.pk FROM t2c WHERE t2c.pk = t1.pk);
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pk i
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0 10
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2 30
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3 40
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SELECT (NULL, 1) NOT IN (SELECT t2c.i, t2c.pk FROM t2c WHERE t2c.pk = t1.pk) from t1;
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(NULL, 1) NOT IN (SELECT t2c.i, t2c.pk FROM t2c WHERE t2c.pk = t1.pk)
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1
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NULL
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1
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|
1
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EXPLAIN
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2d.i, t2d.pk FROM t2d WHERE t2d.pk = t1.pk);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
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2 DEPENDENT SUBQUERY t2d const PRIMARY PRIMARY 4 const 1 Using where; Full scan on NULL key
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SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2d.i, t2d.pk FROM t2d WHERE t2d.pk = t1.pk);
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pk i
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0 10
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2 30
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3 40
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SELECT (NULL, 1) NOT IN (SELECT t2d.i, t2d.pk FROM t2d WHERE t2d.pk = t1.pk) from t1;
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(NULL, 1) NOT IN (SELECT t2d.i, t2d.pk FROM t2d WHERE t2d.pk = t1.pk)
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1
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NULL
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1
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1
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drop table t1, t2a, t2b, t2c, t2d;
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#
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# End of 5.1 tests.
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#
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#
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# BUG#46743 "Azalea processing correlated, aggregate SELECT
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# subqueries incorrectly"
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#
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CREATE TABLE t1 (c int);
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INSERT INTO t1 VALUES (NULL);
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CREATE TABLE t2 (d int , KEY (d));
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INSERT INTO t2 VALUES (NULL),(NULL);
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0 rows in subquery
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SELECT 1 AS RESULT FROM t2,t1 WHERE d = c;
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RESULT
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base query
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SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ;
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RESULT
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NULL
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EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ;
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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 system NULL NULL NULL NULL 1 100.00
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2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
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Warnings:
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Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
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Note 1003 select (select 1 from `test`.`t2` where 0) AS `RESULT` from dual
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first equivalent variant
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SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c ;
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RESULT
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|
NULL
|
|
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select (select 1 from `test`.`t2` where 0) AS `RESULT` from dual group by NULL
|
|
second equivalent variant
|
|
SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ;
|
|
RESULT
|
|
NULL
|
|
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select (select 1 from `test`.`t2` where 0) AS `RESULT` from dual group by NULL
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# BUG#45928 "Differing query results depending on MRR and
|
|
# engine_condition_pushdown settings"
|
|
#
|
|
CREATE TABLE `t1` (
|
|
`pk` int(11) NOT NULL AUTO_INCREMENT,
|
|
`time_nokey` time NOT NULL,
|
|
`varchar_key` varchar(1) NOT NULL,
|
|
`varchar_nokey` varchar(1) NOT NULL,
|
|
PRIMARY KEY (`pk`),
|
|
KEY `varchar_key` (`varchar_key`)
|
|
) AUTO_INCREMENT=12 DEFAULT CHARSET=latin1;
|
|
INSERT INTO `t1` VALUES (10,'00:00:00','i','i'),(11,'00:00:00','','');
|
|
set @old_optimizer_switch = @@session.optimizer_switch,
|
|
@old_engine_condition_pushdown = @@session.engine_condition_pushdown;
|
|
SET SESSION OPTIMIZER_SWITCH = 'materialization=off,semijoin=off,loosescan=off,firstmatch=off,mrr=on';
|
|
SET SESSION engine_condition_pushdown = 1;
|
|
Warnings:
|
|
Warning 1287 The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 10.1. Please use '@@optimizer_switch' instead
|
|
SELECT `time_nokey` G1 FROM t1 WHERE ( `varchar_nokey` , `varchar_key` ) IN (
|
|
SELECT `varchar_nokey` , `varchar_nokey` ) AND `varchar_key` >= 'c' HAVING G1 ORDER
|
|
BY `pk` ;
|
|
G1
|
|
set @@session.optimizer_switch = @old_optimizer_switch,
|
|
@@session.engine_condition_pushdown = @old_engine_condition_pushdown;
|
|
Warnings:
|
|
Warning 1287 The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 10.1. Please use '@@optimizer_switch' instead
|
|
DROP TABLE t1;
|
|
#
|
|
# During work with BUG#45863 I had problems with a query that was
|
|
# optimized differently in regular and prepared mode.
|
|
# Because there was a bug in one of the selected strategies, I became
|
|
# aware of the problem. Adding an EXPLAIN query to catch this.
|
|
DROP TABLE IF EXISTS t1, t2, t3;
|
|
CREATE TABLE t1
|
|
(EMPNUM CHAR(3) NOT NULL,
|
|
EMPNAME CHAR(20),
|
|
GRADE DECIMAL(4),
|
|
CITY CHAR(15));
|
|
CREATE TABLE t2
|
|
(PNUM CHAR(3) NOT NULL,
|
|
PNAME CHAR(20),
|
|
PTYPE CHAR(6),
|
|
BUDGET DECIMAL(9),
|
|
CITY CHAR(15));
|
|
CREATE TABLE t3
|
|
(EMPNUM CHAR(3) NOT NULL,
|
|
PNUM CHAR(3) NOT NULL,
|
|
HOURS DECIMAL(5));
|
|
INSERT INTO t1 VALUES ('E1','Alice',12,'Deale');
|
|
INSERT INTO t1 VALUES ('E2','Betty',10,'Vienna');
|
|
INSERT INTO t1 VALUES ('E3','Carmen',13,'Vienna');
|
|
INSERT INTO t1 VALUES ('E4','Don',12,'Deale');
|
|
INSERT INTO t1 VALUES ('E5','Ed',13,'Akron');
|
|
INSERT INTO t2 VALUES ('P1','MXSS','Design',10000,'Deale');
|
|
INSERT INTO t2 VALUES ('P2','CALM','Code',30000,'Vienna');
|
|
INSERT INTO t2 VALUES ('P3','SDP','Test',30000,'Tampa');
|
|
INSERT INTO t2 VALUES ('P4','SDP','Design',20000,'Deale');
|
|
INSERT INTO t2 VALUES ('P5','IRM','Test',10000,'Vienna');
|
|
INSERT INTO t2 VALUES ('P6','PAYR','Design',50000,'Deale');
|
|
INSERT INTO t3 VALUES ('E1','P1',40);
|
|
INSERT INTO t3 VALUES ('E1','P2',20);
|
|
INSERT INTO t3 VALUES ('E1','P3',80);
|
|
INSERT INTO t3 VALUES ('E1','P4',20);
|
|
INSERT INTO t3 VALUES ('E1','P5',12);
|
|
INSERT INTO t3 VALUES ('E1','P6',12);
|
|
INSERT INTO t3 VALUES ('E2','P1',40);
|
|
INSERT INTO t3 VALUES ('E2','P2',80);
|
|
INSERT INTO t3 VALUES ('E3','P2',20);
|
|
INSERT INTO t3 VALUES ('E4','P2',20);
|
|
INSERT INTO t3 VALUES ('E4','P4',40);
|
|
INSERT INTO t3 VALUES ('E4','P5',80);
|
|
SET @old_optimizer_switch = @@session.optimizer_switch;
|
|
SET @old_join_cache_level = @@session.join_cache_level;
|
|
SET SESSION optimizer_switch = 'firstmatch=on,loosescan=on,materialization=on,in_to_exists=off,semijoin=on';
|
|
SET SESSION join_cache_level = 1;
|
|
CREATE UNIQUE INDEX t1_IDX ON t1(EMPNUM);
|
|
EXPLAIN SELECT EMPNAME
|
|
FROM t1
|
|
WHERE EMPNUM IN
|
|
(SELECT EMPNUM
|
|
FROM t3
|
|
WHERE PNUM IN
|
|
(SELECT PNUM
|
|
FROM t2
|
|
WHERE PTYPE = 'Design'));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
|
|
FROM t1
|
|
WHERE EMPNUM IN
|
|
(SELECT EMPNUM
|
|
FROM t3
|
|
WHERE PNUM IN
|
|
(SELECT PNUM
|
|
FROM t2
|
|
WHERE PTYPE = 'Design'))";
|
|
EXECUTE stmt;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
EXECUTE stmt;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
|
|
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
DEALLOCATE PREPARE stmt;
|
|
DROP INDEX t1_IDX ON t1;
|
|
CREATE INDEX t1_IDX ON t1(EMPNUM);
|
|
EXPLAIN SELECT EMPNAME
|
|
FROM t1
|
|
WHERE EMPNUM IN
|
|
(SELECT EMPNUM
|
|
FROM t3
|
|
WHERE PNUM IN
|
|
(SELECT PNUM
|
|
FROM t2
|
|
WHERE PTYPE = 'Design'));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
|
|
FROM t1
|
|
WHERE EMPNUM IN
|
|
(SELECT EMPNUM
|
|
FROM t3
|
|
WHERE PNUM IN
|
|
(SELECT PNUM
|
|
FROM t2
|
|
WHERE PTYPE = 'Design'))";
|
|
EXECUTE stmt;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
EXECUTE stmt;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
|
|
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
DEALLOCATE PREPARE stmt;
|
|
DROP INDEX t1_IDX ON t1;
|
|
EXPLAIN SELECT EMPNAME
|
|
FROM t1
|
|
WHERE EMPNUM IN
|
|
(SELECT EMPNUM
|
|
FROM t3
|
|
WHERE PNUM IN
|
|
(SELECT PNUM
|
|
FROM t2
|
|
WHERE PTYPE = 'Design'));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
PREPARE stmt FROM "EXPLAIN SELECT EMPNAME
|
|
FROM t1
|
|
WHERE EMPNUM IN
|
|
(SELECT EMPNUM
|
|
FROM t3
|
|
WHERE PNUM IN
|
|
(SELECT PNUM
|
|
FROM t2
|
|
WHERE PTYPE = 'Design'))";
|
|
EXECUTE stmt;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
EXECUTE stmt;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
|
|
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
|
|
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
|
|
DEALLOCATE PREPARE stmt;
|
|
SET SESSION optimizer_switch = @old_optimizer_switch;
|
|
SET SESSION join_cache_level = @old_join_cache_level;
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# BUG#45221 Query SELECT pk FROM C WHERE pk IN (SELECT int_key) failing
|
|
#
|
|
CREATE TABLE t1 (
|
|
i1_key INT,
|
|
i2 INT,
|
|
i3 INT,
|
|
KEY i1_index (i1_key)
|
|
);
|
|
INSERT INTO t1 VALUES (9,1,2), (9,2,1);
|
|
CREATE TABLE t2 (
|
|
pk INT NOT NULL,
|
|
i1 INT,
|
|
PRIMARY KEY (pk)
|
|
);
|
|
INSERT INTO t2 VALUES (9,1);
|
|
# Enable Index condition pushdown
|
|
SELECT @old_icp:=@@engine_condition_pushdown;
|
|
@old_icp:=@@engine_condition_pushdown
|
|
#
|
|
SET SESSION engine_condition_pushdown = 'ON';
|
|
Warnings:
|
|
Warning 1287 The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 10.1. Please use '@@optimizer_switch' instead
|
|
|
|
SELECT pk
|
|
FROM t2
|
|
WHERE
|
|
pk IN (
|
|
SELECT i1_key
|
|
FROM t1
|
|
WHERE t1.i2 < t1.i3 XOR t2.i1 > 1
|
|
ORDER BY t1.i2 desc);
|
|
pk
|
|
9
|
|
# Restore old value for Index condition pushdown
|
|
SET SESSION engine_condition_pushdown=@old_icp;
|
|
Warnings:
|
|
Warning 1287 The syntax '@@engine_condition_pushdown' is deprecated and will be removed in MariaDB 10.1. Please use '@@optimizer_switch' instead
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# End of 5.3 tests.
|
|
#
|
|
#
|
|
# Bug#53236 Segfault in DTCollation::set(DTCollation&)
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk INTEGER AUTO_INCREMENT,
|
|
col_varchar VARCHAR(1),
|
|
PRIMARY KEY (pk)
|
|
)
|
|
;
|
|
INSERT INTO t1 (col_varchar)
|
|
VALUES
|
|
('w'),
|
|
('m')
|
|
;
|
|
SELECT table1.pk
|
|
FROM ( t1 AS table1 JOIN t1 AS table2 ON (table1.col_varchar =
|
|
table2.col_varchar) )
|
|
WHERE ( 1, 2 ) IN ( SELECT SUBQUERY1_t1.pk AS SUBQUERY1_field1,
|
|
SUBQUERY1_t1.pk AS SUBQUERY1_field2
|
|
FROM ( t1 AS SUBQUERY1_t1 JOIN t1 AS SUBQUERY1_t2
|
|
ON (SUBQUERY1_t2.col_varchar =
|
|
SUBQUERY1_t1.col_varchar) ) )
|
|
;
|
|
pk
|
|
drop table t1;
|
|
#
|
|
# BUG#716293: "Range checked for each record" is not used if condition refers to outside of subquery
|
|
#
|
|
create table t1 (a int);
|
|
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t2 (a int, b int, `filler` char(200), key(a), key (b));
|
|
insert into t2
|
|
select A.a + 10*B.a + 100 * C.a, A.a + 10*B.a + 100 * C.a, 'filler' from t1 A, t1 B, t1 C;
|
|
# The following must use "Range checked for each record" for table B
|
|
explain
|
|
select a,
|
|
(select sum(X.a+B.b) from t1 X, t2 B where B.a=A.a or B.b=A.a)
|
|
from t1 A;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY A ALL NULL NULL NULL NULL 10
|
|
2 DEPENDENT SUBQUERY X ALL NULL NULL NULL NULL 10
|
|
2 DEPENDENT SUBQUERY B ALL a,b NULL NULL NULL 1000 Range checked for each record (index map: 0x3)
|
|
drop table t1, t2;
|
|
#
|
|
# BUG#723822: Crash in get_constant_key_infix with EXISTS ( SELECT .. DISTINCT )
|
|
#
|
|
CREATE TABLE t1 ( f1 int(11), f3 varchar(1)) ;
|
|
INSERT INTO t1 VALUES ('8','c'),('5','f');
|
|
ALTER TABLE t1 ADD KEY (f3,f1);
|
|
CREATE TABLE t2 ( f4 varchar(1)) ;
|
|
INSERT INTO t2 VALUES ('f'),('d');
|
|
SELECT * FROM t2
|
|
WHERE EXISTS (
|
|
SELECT DISTINCT f3
|
|
FROM t1
|
|
WHERE f3 <= t2.f4
|
|
);
|
|
f4
|
|
f
|
|
d
|
|
drop table t1,t2;
|
|
#
|
|
# LP BUG#718763 Second crash in select_describe() and materialization
|
|
#
|
|
CREATE TABLE t1 ( f1 int(11), f3 int(11), f10 varchar(1), KEY (f3)) ;
|
|
INSERT INTO t1 VALUES ('28','6','m'),('29','4','c');
|
|
CREATE TABLE t2 (f11 varchar(1)) ;
|
|
INSERT INTO t2 VALUES ('f'),('d');
|
|
SET @old_optimizer_switch = @@session.optimizer_switch;
|
|
SET SESSION optimizer_switch = 'materialization=on,in_to_exists=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT t1.f3 FROM t1
|
|
WHERE ( t1.f10 ) IN ( SELECT f11 FROM t2 GROUP BY f11 ));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY <subquery3> eq_ref distinct_key distinct_key 4 func 1
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT t1.f3 FROM t1
|
|
WHERE ( t1.f10 ) IN ( SELECT f11 FROM t2 GROUP BY f11 ));
|
|
f1 f3 f10
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT f3 FROM t1
|
|
WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 ));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY <subquery3> eq_ref distinct_key distinct_key 8 func,func 1
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT f3 FROM t1
|
|
WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 ));
|
|
f1 f3 f10
|
|
SET @@optimizer_switch = 'materialization=on,in_to_exists=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT t1.f3 FROM t1
|
|
WHERE ( t1.f10 ) IN ( SELECT max(f11) FROM t2 GROUP BY f11 ));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ref f3 f3 5 const 0 Using where
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using temporary
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT t1.f3 FROM t1
|
|
WHERE ( t1.f10 ) IN ( SELECT max(f11) FROM t2 GROUP BY f11 ));
|
|
f1 f3 f10
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT f3 FROM t1
|
|
WHERE ( f10, f10 ) IN ( SELECT max(f11), f11 FROM t2 GROUP BY f11 ));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ref f3 f3 5 const 0 Using where
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using temporary
|
|
SELECT * FROM t1
|
|
WHERE f3 = (
|
|
SELECT f3 FROM t1
|
|
WHERE ( f10, f10 ) IN ( SELECT max(f11), f11 FROM t2 GROUP BY f11 ));
|
|
f1 f3 f10
|
|
SET SESSION optimizer_switch = @old_optimizer_switch;
|
|
drop table t1,t2;
|
|
#
|
|
# LP BUG#715738: Wrong result with implicit grouping and empty result set
|
|
#
|
|
CREATE TABLE t1 (f1 int, f2 int);
|
|
CREATE TABLE t2 (f3 int, f4 int not null, PRIMARY KEY (f3));
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
SET @@optimizer_switch = 'materialization=on,in_to_exists=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
|
|
not_in
|
|
1
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
|
|
f1 f2
|
|
SET @@optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
|
|
not_in
|
|
1
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
|
|
f1 f2
|
|
INSERT INTO t1 VALUES (1, 2);
|
|
INSERT INTO t1 VALUES (3, 4);
|
|
INSERT INTO t2 VALUES (5, 6);
|
|
INSERT INTO t2 VALUES (7, 8);
|
|
SET @@optimizer_switch = 'materialization=on,in_to_exists=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 MATERIALIZED t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
|
|
not_in
|
|
1
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
SET @@optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
|
|
not_in
|
|
1
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t2 range PRIMARY PRIMARY 4 NULL 1 Using index condition; Rowid-ordered scan
|
|
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
|
|
not_in
|
|
NULL
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
|
|
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
|
|
f1 f2
|
|
set @@optimizer_switch=@save_optimizer_switch;
|
|
drop table t1,t2;
|
|
#
|
|
# LP BUG#613029 Wrong result with materialization and semijoin, and
|
|
# valgrind warnings in Protocol::net_store_data with materialization
|
|
# for implicit grouping
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
f2 int(11) NOT NULL,
|
|
f3 varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY f2 (f2));
|
|
INSERT INTO t1 VALUES (1,9,'x');
|
|
INSERT INTO t1 VALUES (2,5,'g');
|
|
CREATE TABLE t2 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
f2 int(11) NOT NULL,
|
|
f3 varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY f2 (f2));
|
|
INSERT INTO t2 VALUES (1,7,'p');
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
|
|
EXPLAIN
|
|
SELECT t1.f3, MAX(t1.f2)
|
|
FROM t1, t2
|
|
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system PRIMARY NULL NULL NULL 1
|
|
1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
|
|
2 DEPENDENT SUBQUERY t1 index_subquery f2 f2 4 func 2 Using index
|
|
SELECT t1.f3, MAX(t1.f2)
|
|
FROM t1, t2
|
|
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
|
|
f3 MAX(t1.f2)
|
|
NULL NULL
|
|
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT t1.f3, MAX(t1.f2)
|
|
FROM t1, t2
|
|
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system PRIMARY NULL NULL NULL 1
|
|
1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1
|
|
2 MATERIALIZED t1 index NULL f2 4 NULL 2 Using index
|
|
SELECT t1.f3, MAX(t1.f2)
|
|
FROM t1, t2
|
|
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);
|
|
f3 MAX(t1.f2)
|
|
NULL NULL
|
|
TODO: add a test case for semijoin when the wrong result is fixed
|
|
set @@optimizer_switch='materialization=off,semijoin=on';
|
|
set @@optimizer_switch=@save_optimizer_switch;
|
|
drop table t1, t2;
|
|
#
|
|
# LP BUG#777691 Wrong result with subqery in select list and subquery cache=off in maria-5.3
|
|
#
|
|
CREATE TABLE t1 ( f1 varchar(32)) ;
|
|
INSERT INTO t1 VALUES ('b'),('x'),('c'),('x');
|
|
CREATE TABLE t2 ( f2 int, f3 varchar(32)) ;
|
|
INSERT INTO t2 VALUES (1,'x');
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on,subquery_cache=off';
|
|
EXPLAIN
|
|
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4
|
|
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1
|
|
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
|
|
f1 max_f2
|
|
b NULL
|
|
x 1
|
|
c NULL
|
|
x 1
|
|
set @@optimizer_switch='materialization=on,in_to_exists=off,subquery_cache=off';
|
|
EXPLAIN
|
|
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4
|
|
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1
|
|
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
|
|
f1 max_f2
|
|
b NULL
|
|
x 1
|
|
c NULL
|
|
x 1
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on,subquery_cache=off';
|
|
Even when t2 is not constant table, the result must be the same.
|
|
INSERT INTO t2 VALUES (2,'y');
|
|
EXPLAIN
|
|
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;
|
|
f1 max_f2
|
|
b NULL
|
|
x 1
|
|
c NULL
|
|
x 1
|
|
set @@optimizer_switch=@save_optimizer_switch;
|
|
drop table t1, t2;
|
|
#
|
|
# LP BUG#641203 Query returns rows where no result is expected (impossible WHERE)
|
|
#
|
|
CREATE TABLE t1 (c1 varchar(1) DEFAULT NULL);
|
|
CREATE TABLE t2 (c1 varchar(1) DEFAULT NULL);
|
|
INSERT INTO t2 VALUES ('k'), ('d');
|
|
CREATE TABLE t3 (c1 varchar(1) DEFAULT NULL);
|
|
INSERT INTO t3 VALUES ('a'), ('b'), ('c');
|
|
CREATE TABLE t4 (c1 varchar(1) primary key);
|
|
INSERT INTO t4 VALUES ('k'), ('d');
|
|
SET @save_optimizer_switch=@@optimizer_switch;
|
|
SET optimizer_switch='outer_join_with_cache=off';
|
|
SET optimizer_switch='semijoin_with_cache=off';
|
|
SET optimizer_switch='materialization=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
|
|
SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
c1 c1
|
|
EXPLAIN
|
|
SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1)
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
|
|
SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
c1 c1
|
|
SET optimizer_switch='materialization=on';
|
|
EXPLAIN
|
|
SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
|
|
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
c1 c1 c1
|
|
EXPLAIN
|
|
SELECT * FROM t4 LEFT JOIN t2 ON t4.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
|
|
1 PRIMARY t4 index NULL PRIMARY 3 NULL 2 Using index; Using join buffer (flat, BNL join)
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT * FROM t4 LEFT JOIN t2 ON t4.c1 WHERE 's' IN (SELECT c1 FROM t2);
|
|
c1 c1
|
|
SET optimizer_switch=@save_optimizer_switch;
|
|
drop table t1, t2, t3, t4;
|
|
#
|
|
# LP BUG#675981 Assertion `cache != __null' failed in sub_select_cache()
|
|
# on EXPLAIN
|
|
#
|
|
CREATE TABLE t1 (f1 int,f2 int) ;
|
|
INSERT IGNORE INTO t1 VALUES ('2','5'),('2',NULL);
|
|
CREATE TABLE t2 (f1 int, f5 int) ;
|
|
INSERT IGNORE INTO t2 VALUES (1,0);
|
|
CREATE TABLE t3 (f4 int) ;
|
|
INSERT IGNORE INTO t3 VALUES (0),(0);
|
|
set @@optimizer_switch='in_to_exists=on,materialization=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT * FROM t2
|
|
WHERE f1 IN (SELECT t1.f2 FROM t1 JOIN t3 ON t3.f4);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LP BUG#680005 Second assertion `cache != __null' failed in
|
|
# sub_select_cache() on EXPLAIN
|
|
#
|
|
CREATE TABLE t1 (f1 int,f2 int,f4 int,f6 int,KEY (f4)) ;
|
|
INSERT IGNORE INTO t1 VALUES
|
|
('1','5','1','0'),('2','1','1','0'),('2','2','2','0'),('0',NULL,'0','0'),
|
|
('2','1','2','0'),('2','0','0','0'),('2','2','2','0'),('2','8','2','0'),
|
|
('2','7','2','0'),('2','5','2','0'),('2',NULL,'1','0');
|
|
CREATE TABLE t2 (f3 int) ;
|
|
INSERT IGNORE INTO t2 VALUES ('7');
|
|
CREATE TABLE t3 (f3 int) ;
|
|
INSERT IGNORE INTO t3 VALUES ('2');
|
|
EXPLAIN
|
|
SELECT t1.f4
|
|
FROM t2 JOIN t1 ON t1.f6
|
|
WHERE
|
|
( t1.f2 ) IN (SELECT SUBQUERY2_t1.f3
|
|
FROM t3 AS SUBQUERY2_t1
|
|
JOIN
|
|
(t1 AS SUBQUERY2_t2
|
|
JOIN
|
|
t1 AS SUBQUERY2_t3 ON SUBQUERY2_t3.f1)
|
|
ON SUBQUERY2_t3.f2)
|
|
GROUP BY t1.f4 ORDER BY t1.f1 LIMIT 10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1 Using temporary; Using filesort
|
|
1 PRIMARY t1 index NULL f4 5 NULL 11 Using where
|
|
2 DEPENDENT SUBQUERY SUBQUERY2_t1 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY SUBQUERY2_t2 index NULL f4 5 NULL 11 Using index
|
|
2 DEPENDENT SUBQUERY SUBQUERY2_t3 ALL NULL NULL NULL NULL 11 Using where; Using join buffer (flat, BNL join)
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LP BUG#680038 bool close_thread_table(THD*, TABLE**):
|
|
# Assertion `table->key_read == 0' failed in EXPLAIN
|
|
#
|
|
CREATE TABLE t1 (f1 int,f3 int,f4 int) ;
|
|
INSERT IGNORE INTO t1 VALUES (NULL,1,0);
|
|
CREATE TABLE t2 (f2 int,f4 int,f5 int) ;
|
|
INSERT IGNORE INTO t2 VALUES (8,0,0),(5,0,0);
|
|
CREATE TABLE t3 (f4 int,KEY (f4)) ;
|
|
INSERT IGNORE INTO t3 VALUES (0),(0);
|
|
set @@optimizer_switch='semijoin=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE
|
|
(SELECT f2 FROM t2
|
|
WHERE f4 <= ALL
|
|
(SELECT max(SQ1_t1.f4)
|
|
FROM t3 AS SQ1_t1 JOIN t3 AS SQ1_t3 ON SQ1_t3.f4
|
|
GROUP BY SQ1_t1.f4));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
3 SUBQUERY SQ1_t1 index NULL f4 5 NULL 2 Using index; Using temporary
|
|
3 SUBQUERY SQ1_t3 index f4 f4 5 NULL 2 Using where; Using index; Using join buffer (flat, BNL join)
|
|
SELECT * FROM t1 WHERE
|
|
(SELECT f2 FROM t2
|
|
WHERE f4 <= ALL
|
|
(SELECT max(SQ1_t1.f4)
|
|
FROM t3 AS SQ1_t1 JOIN t3 AS SQ1_t3 ON SQ1_t3.f4
|
|
GROUP BY SQ1_t1.f4));
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
drop table t1, t2, t3;
|
|
#
|
|
# BUG#52317: Assertion failing in Field_varstring::store()
|
|
# at field.cc:6833
|
|
#
|
|
CREATE TABLE t1 (i INTEGER);
|
|
INSERT INTO t1 VALUES (1);
|
|
CREATE TABLE t2 (i INTEGER, KEY k(i));
|
|
INSERT INTO t2 VALUES (1), (2);
|
|
EXPLAIN
|
|
SELECT i FROM t1 WHERE (1) NOT IN (SELECT i FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
2 SUBQUERY t2 index_subquery k k 5 const 2 Using index
|
|
DROP TABLE t2;
|
|
DROP TABLE t1;
|
|
#
|
|
# LP BUG#680846: Crash in clear_tables() with subqueries
|
|
#
|
|
CREATE TABLE t1 (f3 int) ;
|
|
INSERT IGNORE INTO t1 VALUES (0),(0);
|
|
CREATE TABLE t2 (f1 int,f3 int,f4 varchar(32)) ;
|
|
INSERT IGNORE INTO t2 VALUES (1,0,'f');
|
|
EXPLAIN
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
|
|
FROM t2 JOIN t1 ON t1.f3
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
GROUP BY f9;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
|
|
FROM t2 JOIN t1 ON t1.f3
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
GROUP BY f9;
|
|
COUNT(t2.f3) f9
|
|
EXPLAIN
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
|
|
FROM t2 JOIN t1 ON t1.f3
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
ORDER BY f9;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT COUNT(f3) FROM t1 WHERE t2.f1) AS f9
|
|
FROM t2 JOIN t1 ON t1.f3
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
ORDER BY f9;
|
|
COUNT(t2.f3) f9
|
|
0 NULL
|
|
EXPLAIN
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT t2.f1 FROM t1 limit 1) AS f9
|
|
FROM t2 JOIN t1
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
GROUP BY f9;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT t2.f1 FROM t1 limit 1) AS f9
|
|
FROM t2 JOIN t1
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
GROUP BY f9;
|
|
COUNT(t2.f3) f9
|
|
EXPLAIN
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT t2.f1 FROM t1 limit 1) AS f9
|
|
FROM t2 JOIN t1
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
ORDER BY f9;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
SELECT COUNT(t2.f3),
|
|
(SELECT t2.f1 FROM t1 limit 1) AS f9
|
|
FROM t2 JOIN t1
|
|
WHERE ('v') IN (SELECT f4 FROM t2)
|
|
ORDER BY f9;
|
|
COUNT(t2.f3) f9
|
|
0 NULL
|
|
drop table t1,t2;
|
|
#
|
|
# LP BUG#682683 Crash in create_tmp_table called from
|
|
# JOIN::init_execution
|
|
#
|
|
CREATE TABLE t2 (f1 int) ;
|
|
INSERT INTO t2 VALUES (1),(2);
|
|
CREATE TABLE t1 (f1 int) ;
|
|
EXPLAIN
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
|
|
field1
|
|
NULL
|
|
EXPLAIN
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
|
|
field1
|
|
NULL
|
|
NULL
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
EXPLAIN
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
EXPLAIN
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
drop table t1,t2;
|
|
#
|
|
# LP BUG#680943 Assertion `!table || (!table->read_set ||
|
|
# bitmap_is_set(table->read_set, field_index))' failed with subquery
|
|
#
|
|
CREATE TABLE t1 (f1 int,f3 int) ;
|
|
INSERT IGNORE INTO t1 VALUES ('6','0'),('4','0');
|
|
CREATE TABLE t2 (f1 int,f2 int,f3 int) ;
|
|
INSERT IGNORE INTO t2 VALUES ('6','0','0'),('2','0','0');
|
|
SELECT f2
|
|
FROM (SELECT * FROM t2) AS alias1
|
|
WHERE (SELECT SQ2_t2.f1
|
|
FROM t1 JOIN t1 AS SQ2_t2 ON SQ2_t2.f3
|
|
WHERE SQ2_t2.f3 AND alias1.f1)
|
|
ORDER BY f3 ;
|
|
f2
|
|
drop table t1,t2;
|
|
#
|
|
# LP BUG#715062: Wrong result with VIEW + UNION + subquery in maria-5.3-mwl89
|
|
#
|
|
create table t1 (f1 int);
|
|
create table t2 (f2 int);
|
|
create table t3 (f3 int);
|
|
insert into t1 values (2);
|
|
insert into t2 values (2);
|
|
insert into t3 values (7);
|
|
CREATE VIEW v1 AS SELECT 2 UNION SELECT 2 ;
|
|
CREATE VIEW v2 AS SELECT * from t1 UNION SELECT * from t2 ;
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
SET @@optimizer_switch = 'in_to_exists=off,semijoin=off,materialization=on';
|
|
EXPLAIN
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
|
|
bug
|
|
EXPLAIN
|
|
SELECT ( 5 ) IN ( SELECT * FROM v1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT ( 5 ) IN ( SELECT * FROM v1 );
|
|
( 5 ) IN ( SELECT * FROM v1 )
|
|
0
|
|
EXPLAIN
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED t1 system NULL NULL NULL NULL 1
|
|
4 UNION t2 system NULL NULL NULL NULL 1
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
bug
|
|
EXPLAIN
|
|
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t3 system NULL NULL NULL NULL 1
|
|
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2
|
|
3 DERIVED t1 system NULL NULL NULL NULL 1
|
|
4 UNION t2 system NULL NULL NULL NULL 1
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
bug
|
|
EXPLAIN
|
|
SELECT ( 5 ) IN ( SELECT * FROM v2 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED t1 system NULL NULL NULL NULL 1
|
|
4 UNION t2 system NULL NULL NULL NULL 1
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT ( 5 ) IN ( SELECT * FROM v2 );
|
|
( 5 ) IN ( SELECT * FROM v2 )
|
|
0
|
|
SET @@optimizer_switch = 'in_to_exists=on,semijoin=off,materialization=off';
|
|
EXPLAIN
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
|
|
bug
|
|
EXPLAIN
|
|
SELECT ( 5 ) IN ( SELECT * FROM v1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
4 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT ( 5 ) IN ( SELECT * FROM v1 );
|
|
( 5 ) IN ( SELECT * FROM v1 )
|
|
0
|
|
EXPLAIN
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED t1 system NULL NULL NULL NULL 1
|
|
4 UNION t2 system NULL NULL NULL NULL 1
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
bug
|
|
EXPLAIN
|
|
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t3 system NULL NULL NULL NULL 1
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED t1 system NULL NULL NULL NULL 1
|
|
4 UNION t2 system NULL NULL NULL NULL 1
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
|
|
bug
|
|
EXPLAIN
|
|
SELECT ( 5 ) IN ( SELECT * FROM v2 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 Using where
|
|
3 DERIVED t1 system NULL NULL NULL NULL 1
|
|
4 UNION t2 system NULL NULL NULL NULL 1
|
|
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
|
|
SELECT ( 5 ) IN ( SELECT * FROM v2 );
|
|
( 5 ) IN ( SELECT * FROM v2 )
|
|
0
|
|
set @@optimizer_switch=@save_optimizer_switch;
|
|
drop table t1,t2,t3;
|
|
drop view v1,v2;
|
|
#
|
|
# LP BUG#715069 Wrong result with GROUP BY inside subquery and materialization=off
|
|
#
|
|
CREATE TABLE t0 ( f1 int(11), f2 int(11), f10 varchar(1), PRIMARY KEY (f1)) ;
|
|
INSERT INTO t0 VALUES (8,8,'u'),(10,5,'o');
|
|
CREATE TABLE t1 (f1a int, f2a int not null, f3a varchar(3) not null, PRIMARY KEY (f1a)) ;
|
|
INSERT INTO t1 VALUES
|
|
(8,8,'a1a'),
|
|
(10,5,'b1b');
|
|
CREATE TABLE t2 (f1b int, f2b int not null, f3b varchar(3) not null, PRIMARY KEY (f1b)) ;
|
|
INSERT INTO t2 VALUES
|
|
(10,5,'d1d');
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
SET optimizer_switch='outer_join_with_cache=off';
|
|
set @@optimizer_switch = 'in_to_exists=on,materialization=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT alias2.f1 , alias2.f2
|
|
FROM t0 AS alias1
|
|
RIGHT JOIN t0 AS alias2 ON alias2.f10
|
|
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT max(f2) , f1 FROM t0 GROUP BY f2 , f1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY alias2 ALL NULL NULL NULL NULL 2 Using where
|
|
1 PRIMARY alias1 index NULL PRIMARY 4 NULL 2 Using where; Using index
|
|
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 2 Using temporary
|
|
SELECT alias2.f1 , alias2.f2
|
|
FROM t0 AS alias1
|
|
RIGHT JOIN t0 AS alias2 ON alias2.f10
|
|
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT max(f2) , f1 FROM t0 GROUP BY f2 , f1 );
|
|
f1 f2
|
|
8 8
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect DOUBLE value: 'u'
|
|
EXPLAIN
|
|
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary
|
|
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);
|
|
f1b f2b f3b
|
|
10 5 d1d
|
|
EXPLAIN
|
|
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using temporary
|
|
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);
|
|
f1b f2b f3b
|
|
10 5 d1d
|
|
set @@optimizer_switch = 'in_to_exists=off,materialization=on,semijoin=off';
|
|
EXPLAIN
|
|
SELECT alias2.f1 , alias2.f2
|
|
FROM t0 AS alias1
|
|
RIGHT JOIN t0 AS alias2 ON alias2.f10
|
|
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT max(f2) , f1 FROM t0 GROUP BY f2 , f1 );
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY alias2 ALL NULL NULL NULL NULL 2 Using where
|
|
1 PRIMARY alias1 index NULL PRIMARY 4 NULL 2 Using where; Using index
|
|
2 MATERIALIZED t0 ALL NULL NULL NULL NULL 2 Using temporary
|
|
SELECT alias2.f1 , alias2.f2
|
|
FROM t0 AS alias1
|
|
RIGHT JOIN t0 AS alias2 ON alias2.f10
|
|
WHERE ( alias2.f1 , alias2.f2 ) IN ( SELECT max(f2) , f1 FROM t0 GROUP BY f2 , f1 );
|
|
f1 f2
|
|
8 8
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect DOUBLE value: 'u'
|
|
EXPLAIN
|
|
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);
|
|
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 2 Using temporary
|
|
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);
|
|
f1b f2b f3b
|
|
10 5 d1d
|
|
EXPLAIN
|
|
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);
|
|
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 2 Using temporary
|
|
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);
|
|
f1b f2b f3b
|
|
10 5 d1d
|
|
set @@optimizer_switch=@save_optimizer_switch;
|
|
drop table t0,t1,t2;
|
|
#
|
|
# LP BUG#715759 Wrong result with in_to_exists=on in maria-5.3-mwl89
|
|
#
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
CREATE TABLE t1 (a1 int, a2 int) ;
|
|
INSERT INTO t1 VALUES (1, 2);
|
|
INSERT INTO t1 VALUES (3, 4);
|
|
CREATE TABLE t2 (b1 int, b2 int) ;
|
|
INSERT INTO t2 VALUES (1, 2);
|
|
SET @@optimizer_switch = 'in_to_exists=on,materialization=off,semijoin=off';
|
|
EXPLAIN SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
|
|
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 NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
|
|
a1 a2
|
|
set @@optimizer_switch=@save_optimizer_switch;
|
|
drop table t1, t2;
|
|
#
|
|
# LP BUG#772309 join_tab_cmp_straight(): Assertion `!jt2->emb_sj_nest' failed in maria-5.3-mwl89 with semijoin
|
|
#
|
|
CREATE TABLE t1 ( f2 int) ;
|
|
INSERT INTO t1 VALUES (0),(0);
|
|
CREATE TABLE t2 ( f1 int NOT NULL ) ;
|
|
INSERT INTO t2 VALUES (0),(0);
|
|
CREATE TABLE t3 ( f1 int NOT NULL , f2 int) ;
|
|
INSERT INTO t3 VALUES (0,0), (0,0);
|
|
EXPLAIN SELECT STRAIGHT_JOIN (
|
|
SELECT f2 FROM t1 WHERE ( f2 ) IN ( SELECT t3.f2 FROM t3 JOIN t2 ON t2.f1 = 1 )
|
|
);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
2 SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where
|
|
3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
SELECT STRAIGHT_JOIN (
|
|
SELECT f2 FROM t1 WHERE ( f2 ) IN ( SELECT t3.f2 FROM t3 JOIN t2 ON t2.f1 = 1 )
|
|
);
|
|
(
|
|
SELECT f2 FROM t1 WHERE ( f2 ) IN ( SELECT t3.f2 FROM t3 JOIN t2 ON t2.f1 = 1 )
|
|
)
|
|
NULL
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LP BUG#777597 Wrong result with multipart keys, in_to_exists=on, NOT IN in MWL#89
|
|
#
|
|
CREATE TABLE t1 ( f4 int);
|
|
INSERT IGNORE INTO t1 VALUES (2),(2);
|
|
CREATE TABLE t2 ( f3 int, f10 int, KEY (f10,f3) );
|
|
INSERT IGNORE INTO t2 VALUES (6, 1), (6, 1);
|
|
CREATE TABLE t3 ( f10 int );
|
|
INSERT IGNORE INTO t3 VALUES (1);
|
|
SET SESSION optimizer_switch='in_to_exists=on,materialization=off';
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE ( 6 ) NOT IN ( SELECT t2.f3 FROM t2 JOIN t3 ON t3.f10 = t2.f10);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
2 SUBQUERY t3 system NULL NULL NULL NULL 1
|
|
2 SUBQUERY t2 ref_or_null f10 f10 10 const,const 2 Using where; Using index
|
|
SELECT * FROM t1 WHERE ( 6 ) NOT IN ( SELECT t2.f3 FROM t2 JOIN t3 ON t3.f10 = t2.f10);
|
|
f4
|
|
drop table t1,t2,t3;
|
|
#
|
|
# LP BUG#778413 Third crash in select_describe() in maria-5.3-mwl89
|
|
#
|
|
CREATE TABLE t1 ( f11 int) ;
|
|
INSERT INTO t1 VALUES (1),(1);
|
|
CREATE TABLE t2 ( f1 int NOT NULL) ;
|
|
INSERT INTO t2 VALUES (20);
|
|
CREATE TABLE t3 (f3 int) ;
|
|
INSERT INTO t3 VALUES (2),(2);
|
|
EXPLAIN SELECT * FROM t2
|
|
WHERE t2.f1 = (
|
|
SELECT MAX( f3 ) FROM t3
|
|
WHERE EXISTS (
|
|
SELECT DISTINCT f11
|
|
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 t3 ALL NULL NULL NULL NULL 2
|
|
3 SUBQUERY t1 ALL NULL NULL NULL NULL 2
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LP BUG#802979 Assertion `table->key_read == 0' in close_thread_table
|
|
#
|
|
CREATE TABLE t1 ( f1 int, f2 int , KEY (f1)) ;
|
|
INSERT IGNORE INTO t1 VALUES (1,0),(5,0);
|
|
CREATE TABLE t2 ( f1 int, f2 int , KEY (f1)) ;
|
|
INSERT IGNORE INTO t2 VALUES (1,0),(5,0);
|
|
CREATE TABLE t3 ( f1 int, f2 int , KEY (f1)) ;
|
|
INSERT IGNORE INTO t3 VALUES (1,0),(5,0);
|
|
CREATE TABLE t4 ( f1 int, f2 int , KEY (f1)) ;
|
|
INSERT IGNORE INTO t4 VALUES (1,0),(5,0);
|
|
EXPLAIN
|
|
SELECT *
|
|
FROM t1, t2
|
|
WHERE t2.f2 = (SELECT f2 FROM t3
|
|
WHERE EXISTS (SELECT DISTINCT f1 FROM t4))
|
|
AND t2.f2 = t1.f1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ref f1 f1 5 const 0 Using where
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
2 SUBQUERY t3 ALL NULL NULL NULL NULL 2
|
|
3 SUBQUERY t4 index NULL f1 5 NULL 2 Using index
|
|
SELECT *
|
|
FROM t1, t2
|
|
WHERE t2.f2 = (SELECT f2 FROM t3
|
|
WHERE EXISTS (SELECT DISTINCT f1 FROM t4))
|
|
AND t2.f2 = t1.f1;
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
EXPLAIN
|
|
SELECT *
|
|
FROM t1, t2
|
|
WHERE t2.f2 = (SELECT f2 FROM t3
|
|
WHERE EXISTS (SELECT DISTINCT f1 FROM t4) LIMIT 1)
|
|
AND t2.f2 = t1.f1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ref f1 f1 5 const 0 Using where
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
2 SUBQUERY t3 ALL NULL NULL NULL NULL 2
|
|
3 SUBQUERY t4 index NULL f1 5 NULL 2 Using index
|
|
SELECT *
|
|
FROM t1, t2
|
|
WHERE t2.f2 = (SELECT f2 FROM t3
|
|
WHERE EXISTS (SELECT DISTINCT f1 FROM t4) LIMIT 1)
|
|
AND t2.f2 = t1.f1;
|
|
f1 f2 f1 f2
|
|
drop table t1,t2,t3,t4;
|
|
#
|
|
# LP BUG#611690 Crash in select_describe() with nested subqueries
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_int_key int(11) DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
|
|
INSERT INTO t1 VALUES (8,'v','v');
|
|
INSERT INTO t1 VALUES (9,'r','r');
|
|
CREATE TABLE t2 (
|
|
col_int_key int(11) DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
|
|
INSERT INTO t2 VALUES (2,'w','w');
|
|
INSERT INTO t2 VALUES (9,'m','m');
|
|
set @old_optimizer_switch = @@optimizer_switch;
|
|
set @@optimizer_switch='subquery_cache=off,materialization=on,in_to_exists=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT col_int_key
|
|
FROM t2
|
|
WHERE (SELECT SUBQUERY2_t1.col_int_key
|
|
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
|
|
ON SUBQUERY2_t2.col_varchar_key
|
|
WHERE SUBQUERY2_t2.col_varchar_nokey IN
|
|
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 index NULL col_int_key 5 NULL 2 Using index
|
|
2 SUBQUERY SUBQUERY2_t1 index NULL col_int_key 5 NULL 2 Using index
|
|
2 SUBQUERY SUBQUERY2_t2 ALL col_varchar_key NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
|
|
SELECT col_int_key
|
|
FROM t2
|
|
WHERE (SELECT SUBQUERY2_t1.col_int_key
|
|
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
|
|
ON SUBQUERY2_t2.col_varchar_key
|
|
WHERE SUBQUERY2_t2.col_varchar_nokey IN
|
|
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
|
|
col_int_key
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect DOUBLE value: 'v'
|
|
Warning 1292 Truncated incorrect DOUBLE value: 'r'
|
|
set @@optimizer_switch='subquery_cache=off,materialization=off,in_to_exists=on,semijoin=off';
|
|
EXPLAIN
|
|
SELECT col_int_key
|
|
FROM t2
|
|
WHERE (SELECT SUBQUERY2_t1.col_int_key
|
|
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
|
|
ON SUBQUERY2_t2.col_varchar_key
|
|
WHERE SUBQUERY2_t2.col_varchar_nokey IN
|
|
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 index NULL col_int_key 5 NULL 2 Using index
|
|
2 SUBQUERY SUBQUERY2_t1 index NULL col_int_key 5 NULL 2 Using index
|
|
2 SUBQUERY SUBQUERY2_t2 ALL col_varchar_key NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
3 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT col_int_key
|
|
FROM t2
|
|
WHERE (SELECT SUBQUERY2_t1.col_int_key
|
|
FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
|
|
ON SUBQUERY2_t2.col_varchar_key
|
|
WHERE SUBQUERY2_t2.col_varchar_nokey IN
|
|
(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
|
|
col_int_key
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect DOUBLE value: 'v'
|
|
Warning 1292 Truncated incorrect DOUBLE value: 'r'
|
|
drop table t1, t2;
|
|
set @@optimizer_switch = @old_optimizer_switch;
|
|
#
|
|
# LP BUG#612543 Crash in Item_field::used_tables() with view + subquery + prepared statements
|
|
#
|
|
CREATE TABLE t1 ( f1 int(11), f2 varchar(1));
|
|
CREATE TABLE t2 ( f3 varchar(1));
|
|
insert into t1 values (2,'x'), (5,'y');
|
|
insert into t2 values ('x'), ('z');
|
|
CREATE VIEW v2 AS SELECT * FROM t2;
|
|
set @old_optimizer_switch = @@optimizer_switch;
|
|
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off,subquery_cache=off';
|
|
EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 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
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
|
|
PREPARE st1 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
|
|
EXECUTE st1;
|
|
f1 f2 f3
|
|
2 x x
|
|
5 y x
|
|
EXECUTE st1;
|
|
f1 f2 f3
|
|
2 x x
|
|
5 y x
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off,subquery_cache=off';
|
|
EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 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
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
|
|
PREPARE st2 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
|
|
EXECUTE st2;
|
|
f1 f2 f3
|
|
2 x x
|
|
5 y x
|
|
EXECUTE st2;
|
|
f1 f2 f3
|
|
2 x x
|
|
5 y x
|
|
set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off,subquery_cache=off';
|
|
EXPLAIN SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 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
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2
|
|
PREPARE st3 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
|
|
EXECUTE st3;
|
|
f1 f2 f3
|
|
2 x x
|
|
5 y x
|
|
EXECUTE st3;
|
|
f1 f2 f3
|
|
2 x x
|
|
5 y x
|
|
set @@optimizer_switch = @old_optimizer_switch;
|
|
drop table t1, t2;
|
|
drop view v2;
|
|
#
|
|
# LP BUG#611396 RQG: crash in Item_field::register_field_in_read_map with semijoin=off
|
|
# and prepared statements and materialization
|
|
CREATE TABLE t1 ( f1 int(11), f2 int(11)) ;
|
|
CREATE TABLE t2 ( f1 int(11), f4 varchar(1), PRIMARY KEY (f1)) ;
|
|
INSERT INTO t2 VALUES ('23','j'),('24','e');
|
|
CREATE TABLE t3 ( f1 int(11), f4 varchar(1)) ;
|
|
INSERT INTO t3 VALUES ('8','j');
|
|
set @old_optimizer_switch = @@optimizer_switch;
|
|
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
|
|
EXPLAIN
|
|
SELECT t2.f1, (SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
|
|
FROM t2 JOIN t3 ON t3.f4 = t2.f4
|
|
WHERE t3.f1 = 8
|
|
GROUP BY 1, 2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t3 system NULL NULL NULL NULL 1 Using temporary; Using filesort
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
|
3 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
PREPARE st1 FROM "
|
|
SELECT t2.f1, (SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
|
|
FROM t2 JOIN t3 ON t3.f4 = t2.f4
|
|
WHERE t3.f1 = 8
|
|
GROUP BY 1, 2";
|
|
EXECUTE st1;
|
|
f1 (SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
|
|
23 NULL
|
|
EXECUTE st1;
|
|
f1 (SELECT f2 FROM t1 WHERE (7) IN (SELECT f1 FROM t1))
|
|
23 NULL
|
|
set @@optimizer_switch = @old_optimizer_switch;
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LP BUG#611382 RQG: Query returns extra rows when executed with materialization=on
|
|
#
|
|
CREATE TABLE t1 ( f4 varchar(1)) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (NULL);
|
|
CREATE TABLE t2 ( f2 date, f3 varchar(1), f4 varchar(1)) ;
|
|
INSERT INTO t2 VALUES ('2005-05-03','c','c'),('1900-01-01','d','d');
|
|
CREATE TABLE t3 ( f3 varchar(1)) ;
|
|
INSERT INTO t3 VALUES ('c');
|
|
set @old_optimizer_switch = @@optimizer_switch;
|
|
set @@optimizer_switch = 'materialization=on,in_to_exists=off,semijoin=off';
|
|
EXPLAIN SELECT t1.f4
|
|
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
|
|
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t3 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2
|
|
SELECT t1.f4
|
|
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
|
|
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
|
|
f4
|
|
set @@optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';
|
|
EXPLAIN SELECT t1.f4
|
|
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
|
|
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t3 system NULL NULL NULL NULL 1
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where
|
|
SELECT t1.f4
|
|
FROM t1 JOIN ( t2 JOIN t3 ON t3.f3 = t2.f4 ) ON t3.f3 = t2.f3
|
|
WHERE t1.f4 IN ( SELECT f4 FROM t2 ) ;
|
|
f4
|
|
set @@optimizer_switch = @old_optimizer_switch;
|
|
drop table t1, t2, t3;
|
|
#
|
|
# LP BUG#782305: Wrong result/valgrind warning in Item_sum_hybrid::any_value()
|
|
#
|
|
CREATE TABLE t1 ( f1 int) ;
|
|
INSERT INTO t1 VALUES (2),(3);
|
|
CREATE TABLE t2 (f2 int) ;
|
|
INSERT INTO t2 VALUES (2),(3);
|
|
PREPARE st1 FROM '
|
|
SELECT * FROM t2
|
|
WHERE f2 <= SOME ( SELECT f1 FROM t1 );
|
|
';
|
|
EXECUTE st1;
|
|
f2
|
|
2
|
|
3
|
|
EXECUTE st1;
|
|
f2
|
|
2
|
|
3
|
|
PREPARE st2 FROM '
|
|
SELECT * FROM t2
|
|
WHERE f2 <= SOME (SELECT f1-2 FROM t1 UNION SELECT f1-1 FROM t1);
|
|
';
|
|
EXECUTE st2;
|
|
f2
|
|
2
|
|
EXECUTE st2;
|
|
f2
|
|
2
|
|
drop table t1, t2;
|
|
#
|
|
# LP BUG#825018: Crash in check_and_do_in_subquery_rewrites() with corrlated subquery in select list
|
|
#
|
|
CREATE TABLE t1 (a int, b int);
|
|
INSERT INTO t1 VALUES (10,1),(11,7);
|
|
CREATE TABLE t2 (a int);
|
|
INSERT INTO t2 VALUES (2),(3);
|
|
CREATE TABLE t3 (a int, b int);
|
|
INSERT INTO t3 VALUES (1,1);
|
|
CREATE PROCEDURE sp1 () LANGUAGE SQL
|
|
SELECT (SELECT t1.a
|
|
FROM t1
|
|
WHERE t1.b = t3.b
|
|
AND t1.b IN ( SELECT a FROM t2 )) sq
|
|
FROM t3
|
|
GROUP BY 1;
|
|
CALL sp1();
|
|
sq
|
|
NULL
|
|
CALL sp1();
|
|
sq
|
|
NULL
|
|
drop procedure sp1;
|
|
prepare st1 from "
|
|
SELECT (SELECT t1.a
|
|
FROM t1
|
|
WHERE t1.b = t3.b
|
|
AND t1.b IN ( SELECT a FROM t2 )) sq
|
|
FROM t3
|
|
GROUP BY 1";
|
|
execute st1;
|
|
sq
|
|
NULL
|
|
execute st1;
|
|
sq
|
|
NULL
|
|
deallocate prepare st1;
|
|
drop table t1, t2, t3;
|
|
set optimizer_switch=@subselect4_tmp;
|
|
#
|
|
# LP BUG#833702 Wrong result with nested IN and singlerow subqueries and equality propagation
|
|
#
|
|
CREATE TABLE t2 (c int , a int, b int);
|
|
INSERT INTO t2 VALUES (10,7,0);
|
|
CREATE TABLE t3 (a int, b int) ;
|
|
INSERT INTO t3 VALUES (5,0),(7,0);
|
|
CREATE TABLE t4 (a int);
|
|
INSERT INTO t4 VALUES (2),(8);
|
|
set @@optimizer_switch='semijoin=off,in_to_exists=on,materialization=off,subquery_cache=off';
|
|
SELECT * FROM t2
|
|
WHERE t2.b IN (SELECT b FROM t3 WHERE t3.a = t2.a AND a < SOME (SELECT * FROM t4))
|
|
OR ( t2.c > 242 );
|
|
c a b
|
|
10 7 0
|
|
EXPLAIN SELECT * FROM t2
|
|
WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.a < ANY (SELECT t4.a FROM t4) and t3.a = 7);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 system NULL NULL NULL NULL 1
|
|
2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 Using where
|
|
3 SUBQUERY t4 ALL NULL NULL NULL NULL 2
|
|
SELECT * FROM t2
|
|
WHERE t2.b IN (SELECT t3.b FROM t3 WHERE t3.a < ANY (SELECT t4.a FROM t4) and t3.a = 7);
|
|
c a b
|
|
10 7 0
|
|
drop table t2, t3, t4;
|
|
#
|
|
# BUG#934597: Assertion `! is_set()' failed in Diagnostics_area::set_ok_status(THD...
|
|
#
|
|
CREATE TABLE t1 ( a VARCHAR(1) );
|
|
INSERT INTO t1 VALUES ('u'),('k');
|
|
CREATE TABLE t2 AS
|
|
SELECT a AS field1 FROM t1
|
|
WHERE ( SELECT alias1.a
|
|
FROM t1 AS alias1
|
|
) IS NOT NULL;
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
DROP TABLE t2;
|
|
ERROR 42S02: Unknown table 't2'
|
|
DROP TABLE t1;
|
|
#
|
|
# LP BUG#1000649 EXPLAIN shows incorrectly a non-correlated constant IN subquery is correlated
|
|
#
|
|
create table ten (a int);
|
|
insert into ten values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t1 (a int, b int, c int);
|
|
insert into t1 select a,a,a from ten;
|
|
create table five (a int, b int, c int);
|
|
insert into five select a,a,a from ten limit 5;
|
|
set @@optimizer_switch='semijoin=on,in_to_exists=on,materialization=off';
|
|
explain select * from t1 where 33 in (select b from five) or c > 11;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 10 Using where
|
|
2 SUBQUERY five ALL NULL NULL NULL NULL 5 Using where
|
|
drop table ten, t1, five;
|
|
#
|
|
# LP BUG#1008773 Wrong result (NULL instead of a value) with no matching rows, subquery in FROM and HAVING
|
|
#
|
|
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
|
|
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (1);
|
|
EXPLAIN
|
|
SELECT MAX(a), ( SELECT 1 FROM t2 ) AS bb FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
2 SUBQUERY t2 system NULL NULL NULL NULL 1
|
|
SELECT MAX(a), ( SELECT 1 FROM t2 ) AS bb FROM t1;
|
|
MAX(a) bb
|
|
NULL 1
|
|
EXPLAIN
|
|
SELECT MAX(a), 1 in ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
2 SUBQUERY t2 system NULL NULL NULL NULL 1
|
|
SELECT MAX(a), 1 in ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
MAX(a) bb
|
|
NULL 1
|
|
EXPLAIN
|
|
SELECT MAX(a), 1 >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
SELECT MAX(a), 1 >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
MAX(a) bb
|
|
NULL 1
|
|
EXPLAIN
|
|
SELECT MAX(a), ( SELECT 1 FROM t2 where b = a) AS bb FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
SELECT MAX(a), ( SELECT 1 FROM t2 where b = a) AS bb FROM t1;
|
|
MAX(a) bb
|
|
NULL NULL
|
|
EXPLAIN
|
|
SELECT MAX(a), a in ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1
|
|
SELECT MAX(a), a in ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
MAX(a) bb
|
|
NULL NULL
|
|
EXPLAIN
|
|
SELECT MAX(a), a >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
|
|
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1
|
|
SELECT MAX(a), a >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;
|
|
MAX(a) bb
|
|
NULL NULL
|
|
drop table t1, t2;
|
|
set optimizer_switch=@subselect4_tmp;
|
|
SET optimizer_switch= @@global.optimizer_switch;
|
|
set @@tmp_table_size= @@global.tmp_table_size;
|