path: root/mysql-test/main/subselect4.test

# General purpose bug fix tests go here : subselect.test too large

--source include/default_optimizer_switch.inc

--disable_warnings
drop table if exists t0,t1,t2,t3,t4,t5,t6;
drop view if exists v1, v2;
--enable_warnings

set @subselect4_tmp= @@optimizer_switch;
set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on';
set optimizer_switch='semijoin_with_cache=on';
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';

--echo #
--echo # Bug #46791: Assertion failed:(table->key_read==0),function unknown
--echo #    function,file sql_base.cc
--echo #

CREATE TABLE t1 (a INT, b INT, KEY(a));
INSERT INTO t1 VALUES (1,1),(2,2);
CREATE TABLE t2 LIKE t1;
INSERT INTO t2 VALUES (1,1),(2,2);
CREATE TABLE t3 LIKE t1;

--echo # should have 1 impossible where and 2 dependent subqueries
EXPLAIN
SELECT 1 FROM t1
WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3))
ORDER BY count(*);

--echo # should not crash the next statement
SELECT 1 FROM t1
WHERE NOT EXISTS (SELECT 1 FROM t2 WHERE 1 = (SELECT MIN(t2.b) FROM t3))
ORDER BY count(*);

--echo # should not crash: the crash is caused by the previous statement
SELECT 1;

DROP TABLE t1,t2,t3;

--echo #
--echo # Bug #47106: Crash / segfault on adding EXPLAIN to a non-crashing 
--echo # query
--echo #

CREATE TABLE t1 (
  a INT,
  b INT,
  PRIMARY KEY (a),
  KEY b (b)
);
INSERT INTO t1 VALUES (1, 1), (2, 1);

CREATE TABLE t2 LIKE t1;
INSERT INTO t2 SELECT * FROM t1;

CREATE TABLE t3 LIKE t1;
INSERT INTO t3 SELECT * FROM t1;

--echo # Should not crash.
--echo # Should have 1 impossible where and 2 dependent subqs.
EXPLAIN
SELECT
  (SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
FROM t3 WHERE 1 = 0 GROUP BY 1;

--echo # should return 0 rows
SELECT
  (SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
FROM t3 WHERE 1 = 0 GROUP BY 1;

DROP TABLE t1,t2,t3;

--echo End of 5.0 tests.

#
# Fix for LP#612894
# Some aggregate functions (such as MIN MAX) work incorrectly in subqueries
# after getting NULL value
#

CREATE TABLE t1 (col_int_nokey int(11) NOT NULL, col_varchar_nokey varchar(1) NOT NULL) engine=myisam;
INSERT INTO t1 VALUES (2,'s'),(0,'v'),(2,'s');
CREATE TABLE t2 (
  pk int(11) NOT NULL AUTO_INCREMENT,
 `col_int_key` int(11) NOT NULL,
  col_varchar_key varchar(1) NOT NULL,
  PRIMARY KEY (pk),
  KEY `col_int_key` (`col_int_key`),
  KEY `col_varchar_key` (`col_varchar_key`)
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (4,10,'g'), (5,20,'v');

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;

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;

DROP TABLE t1,t2;

--echo #
--echo # Bug#54568: create view cause Assertion failed: 0, 
--echo # file .\item_subselect.cc, line 836
--echo #
EXPLAIN SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
DESCRIBE SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
--echo # None of the below should crash
CREATE VIEW v1 AS SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
CREATE VIEW v2 AS SELECT 1 LIKE '%' ESCAPE ( 1 IN ( SELECT 1 ) );
DROP VIEW v1, v2;

--echo # 
--echo # Bug#51070: Query with a NOT IN subquery predicate returns a wrong
--echo # result set
--echo # 
CREATE TABLE t1 ( a INT, b INT );
INSERT INTO t1 VALUES ( 1, NULL ), ( 2, NULL );

CREATE TABLE t2 ( c INT, d INT );
INSERT INTO t2 VALUES ( NULL, 3 ), ( NULL, 4 );

CREATE TABLE t3 ( e INT, f INT );
INSERT INTO t3 VALUES ( NULL, NULL ), ( NULL, NULL );

CREATE TABLE t4 ( a INT );
INSERT INTO t4 VALUES (1), (2), (3);

CREATE TABLE t5 ( a INT );
INSERT INTO t5 VALUES (NULL), (2);

SET @old_optimizer_switch = @@session.optimizer_switch;
SET SESSION optimizer_switch = 'materialization=off,in_to_exists=on,semijoin=off';

--replace_column 1 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x
EXPLAIN
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 );
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 );

EXPLAIN
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL;
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS NULL;
SELECT * FROM t1 WHERE ( a, b ) IN ( SELECT c, d FROM t2 ) IS NULL;
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT c, d FROM t2 ) IS UNKNOWN;
SELECT * FROM t1 WHERE (( a, b ) NOT IN ( SELECT c, d FROM t2 )) IS UNKNOWN;

SELECT * FROM t1 WHERE 1 = 1 AND ( a, b ) NOT IN ( SELECT c, d FROM t2 );

--replace_column 1 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x
EXPLAIN
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 );
SELECT * FROM t1 WHERE ( a, b ) NOT IN ( SELECT e, f FROM t3 );

--replace_column 1 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x
EXPLAIN
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 );
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT a, b FROM t1 );

--replace_column 1 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x
EXPLAIN
SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 );
SELECT * FROM t3 WHERE ( e, f ) NOT IN ( SELECT c, d FROM t2 );

--replace_column 1 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x
EXPLAIN
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 );
SELECT * FROM t2 WHERE ( c, d ) NOT IN ( SELECT e, f FROM t3 );

SELECT * FROM t1 WHERE ( a, b ) NOT IN 
  ( SELECT c, d FROM t2 WHERE c = 1 AND c <> 1 );

SELECT * FROM t1 WHERE b NOT IN ( SELECT c FROM t2 WHERE c = 1 );

SELECT * FROM t1 WHERE NULL NOT IN ( SELECT c FROM t2 WHERE c = 1 AND c <> 1 );

SET SESSION optimizer_switch = @old_optimizer_switch;

DROP TABLE t1, t2, t3, t4, t5;

--echo #
--echo # Bug#58207: invalid memory reads when using default column value and 
--echo # tmptable needed
--echo #
CREATE TABLE t(a VARCHAR(245) DEFAULT
'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa');
INSERT INTO t VALUES (''),(''),(''),(''),(''),(''),(''),(''),(''),(''),('');
SELECT * FROM (SELECT default(a) FROM t GROUP BY a) d;
DROP TABLE t;

--echo #
--echo # LP BUG#1009187, MDEV-373, MYSQL bug#58628
--echo # Wrong result for a query with [NOT] IN subquery predicate if
--echo # the left part of the predicate is explicit NULL
--echo #

CREATE TABLE t1 (pk INT NOT NULL, i INT NOT NULL);
INSERT INTO t1 VALUES (0,10), (1,20), (2,30), (3,40);

CREATE TABLE t2a (pk INT NOT NULL, i INT NOT NULL, PRIMARY KEY(i,pk));
INSERT INTO t2a VALUES (0,0), (1,1), (2,2), (3,3);

CREATE TABLE t2b (pk INT, i INT);
INSERT INTO t2b VALUES (0,0), (1,1), (2,2), (3,3);

CREATE TABLE t2c (pk INT NOT NULL, i INT NOT NULL);
INSERT INTO t2c VALUES (0,0), (1,1), (2,2), (3,3);
create index it2c on t2c (i,pk);

CREATE TABLE t2d (pk INT NOT NULL, i INT NOT NULL, PRIMARY KEY(i));
INSERT INTO t2d VALUES (0,0), (1,1), (2,2), (3,3);

EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE 1+NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE NULL     IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk) IS UNKNOWN;
SELECT t1.pk, NULL NOT IN (SELECT t2a.i FROM t2a  WHERE t2a.pk = t1.pk) FROM t1;

EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
SELECT * FROM t1 WHERE NULL     IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk) IS UNKNOWN;
SELECT t1.pk, NULL NOT IN (SELECT t2b.i FROM t2b  WHERE t2b.pk = t1.pk) FROM t1;

EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
SELECT * FROM t1 WHERE NULL     IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk) IS UNKNOWN;
SELECT t1.pk, NULL NOT IN (SELECT t2c.i FROM t2c  WHERE t2c.pk = t1.pk) FROM t1;

EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk);
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk);
SELECT * FROM t1 WHERE NULL     IN (SELECT t2d.i FROM t2d WHERE t2d.pk = t1.pk) IS UNKNOWN;
SELECT t1.pk, NULL NOT IN (SELECT t2d.i FROM t2d  WHERE t2d.pk = t1.pk) FROM t1;

EXPLAIN
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
SELECT (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk) from t1;

EXPLAIN
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2b.i, t2b.pk FROM t2b WHERE t2b.pk = t1.pk);
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2b.i, t2b.pk FROM t2b WHERE t2b.pk = t1.pk);
SELECT (NULL, 1) NOT IN (SELECT t2b.i, t2b.pk FROM t2b WHERE t2b.pk = t1.pk) from t1;

EXPLAIN
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2c.i, t2c.pk FROM t2c WHERE t2c.pk = t1.pk);
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2c.i, t2c.pk FROM t2c WHERE t2c.pk = t1.pk);
SELECT (NULL, 1) NOT IN (SELECT t2c.i, t2c.pk FROM t2c WHERE t2c.pk = t1.pk) from t1;

EXPLAIN
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2d.i, t2d.pk FROM t2d WHERE t2d.pk = t1.pk);
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2d.i, t2d.pk FROM t2d WHERE t2d.pk = t1.pk);
SELECT (NULL, 1) NOT IN (SELECT t2d.i, t2d.pk FROM t2d WHERE t2d.pk = t1.pk) from t1;

drop table t1, t2a, t2b, t2c, t2d;

--echo #
--echo # End of 5.1 tests.
--echo #

--echo #
--echo # BUG#46743 "Azalea processing correlated, aggregate SELECT
--echo # subqueries incorrectly"
--echo #

CREATE TABLE t1 (c int);
INSERT INTO t1 VALUES (NULL);
CREATE TABLE t2 (d int , KEY (d)); # index is needed for bug
INSERT INTO t2 VALUES (NULL),(NULL); # two rows needed for bug
# we see that subquery returns 0 rows
--echo 0 rows in subquery
SELECT 1 AS RESULT FROM t2,t1 WHERE d = c;
# so here it ends up as NULL
--echo base query
SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ;
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 ;
--echo first equivalent variant
SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c ;
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = IFNULL(c,NULL)) AS RESULT FROM t1 GROUP BY c;
--echo second equivalent variant
# used to fail with 1242: Subquery returns more than 1 row
SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ;
EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) AS RESULT FROM t1 GROUP BY c ;

DROP TABLE t1,t2;

--echo #
--echo # BUG#45928 "Differing query results depending on MRR and
--echo # engine_condition_pushdown settings"
--echo #

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;

SET SESSION OPTIMIZER_SWITCH = 'materialization=off,semijoin=off,loosescan=off,firstmatch=off,mrr=on,engine_condition_pushdown=on';

 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`   ;

set @@session.optimizer_switch          = @old_optimizer_switch;

DROP TABLE t1;

--echo #
--echo # During work with BUG#45863 I had problems with a query that was
--echo # optimized differently in regular and prepared mode.
--echo # Because there was a bug in one of the selected strategies, I became
--echo # aware of the problem. Adding an EXPLAIN query to catch this.

--disable_warnings
DROP TABLE IF EXISTS t1, t2, t3;
--enable_warnings

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'));

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;
EXECUTE stmt;
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'));

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;
EXECUTE stmt;
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'));

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;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

SET SESSION optimizer_switch = @old_optimizer_switch;
SET SESSION join_cache_level = @old_join_cache_level;

DROP TABLE t1, t2, t3;

--echo #
--echo # BUG#45221 Query SELECT pk FROM C WHERE pk IN (SELECT int_key) failing
--echo #

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);

--echo # Enable Index condition pushdown
--replace_column 1 #
set @old_icp=@@optimizer_switch;
SET SESSION optimizer_switch="engine_condition_pushdown=on";

--echo
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);

--echo # Restore old value for Index condition pushdown
SET SESSION optimizer_switch=@old_icp;

DROP TABLE t1,t2;

--echo #
--echo # End of 5.3 tests.
--echo #

--echo #
--echo # Bug#53236 Segfault in DTCollation::set(DTCollation&)
--echo #

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) ) ) 
;

drop table t1;

--echo #
--echo # BUG#716293: "Range checked for each record" is not used if condition refers to outside of subquery
--echo #

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;

--echo # 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;  
drop table t1, t2;


--echo #
--echo # BUG#723822: Crash in get_constant_key_infix with EXISTS ( SELECT .. DISTINCT )
--echo #
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
);

drop table t1,t2;

--echo #
--echo # LP BUG#718763 Second crash in select_describe() and materialization
--echo #

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 ));
SELECT * FROM t1
WHERE f3 = (
        SELECT t1.f3 FROM t1
        WHERE ( t1.f10 ) IN ( SELECT f11 FROM t2 GROUP BY f11 ));

EXPLAIN
SELECT * FROM t1
WHERE f3 = (
        SELECT f3 FROM t1
        WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 ));
SELECT * FROM t1
WHERE f3 = (
        SELECT f3 FROM t1
        WHERE ( f10, f10 ) IN ( SELECT f11, f11 FROM t2 GROUP BY f11 ));
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 ));
SELECT * FROM t1
WHERE f3 = (
        SELECT t1.f3 FROM t1
        WHERE ( t1.f10 ) IN ( SELECT max(f11) FROM t2 GROUP BY f11 ));

EXPLAIN
SELECT * FROM t1
WHERE f3 = (
        SELECT f3 FROM t1
        WHERE ( f10, f10 ) IN ( SELECT max(f11), f11 FROM t2 GROUP BY f11 ));
SELECT * FROM t1
WHERE f3 = (
        SELECT f3 FROM t1
        WHERE ( f10, f10 ) IN ( SELECT max(f11), f11 FROM t2 GROUP BY f11 ));

SET SESSION optimizer_switch = @old_optimizer_switch;
drop table t1,t2;

--echo #
--echo # LP BUG#715738: Wrong result with implicit grouping and empty result set
--echo #

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);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);


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);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) > 7) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 HAVING max(f4) is null) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);


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);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);

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);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3+f4, min(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, min(f4)+max(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, min(f4) FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT f3, f3 + count(f4) FROM t2 WHERE f3 > 10);

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) > 7) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;
SELECT (2, 0) NOT IN (SELECT f3, count(f4) FROM t2 WHERE f3 > 10 HAVING max(f4) is null) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4) FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;
SELECT (2, 0) NOT IN (SELECT max(f3+f3), count(f4)+f3 FROM t2 WHERE f3 > 10) as not_in;

EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);

set @@optimizer_switch=@save_optimizer_switch;

drop table t1,t2;

--echo #
--echo # LP BUG#613029 Wrong result with materialization and semijoin, and
--echo # valgrind warnings in Protocol::net_store_data with materialization
--echo # for implicit grouping
--echo #

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);

SELECT t1.f3, MAX(t1.f2)
FROM t1, t2
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);

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);

SELECT t1.f3, MAX(t1.f2)
FROM t1, t2
WHERE (t2.pk = t1.pk) AND t2.pk IN (SELECT f2 FROM t1);

-- echo TODO: add a test case for semijoin when the wrong result is fixed
-- echo set @@optimizer_switch='materialization=off,semijoin=on';


set @@optimizer_switch=@save_optimizer_switch;

drop table t1, t2;


--echo #
--echo # LP BUG#777691 Wrong result with subqery in select list and subquery cache=off in maria-5.3
--echo #

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;
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;

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;
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;

set @@optimizer_switch='materialization=off,in_to_exists=on,subquery_cache=off';
--echo 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;
SELECT t1.f1, ( SELECT MAX( f2 ) FROM t2 WHERE t2.f3 = t1.f1 ) as max_f2 FROM t1;

set @@optimizer_switch=@save_optimizer_switch;

drop table t1, t2;

--echo #
--echo # LP BUG#641203 Query returns rows where no result is expected (impossible WHERE)
--echo #

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);
SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
EXPLAIN
SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2);
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);
SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2);
EXPLAIN
SELECT * FROM t4 LEFT JOIN t2 ON t4.c1 WHERE 's' IN (SELECT c1 FROM t2);
SELECT * FROM t4 LEFT JOIN t2 ON t4.c1 WHERE 's' IN (SELECT c1 FROM t2);

SET optimizer_switch=@save_optimizer_switch;

drop table t1, t2, t3, t4;

--echo #
--echo # LP BUG#675981 Assertion `cache != __null' failed in sub_select_cache()
--echo #               on EXPLAIN
--echo #

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);

drop table t1, t2, t3;

--echo #
--echo # LP BUG#680005 Second assertion `cache != __null' failed in
--echo #                sub_select_cache() on EXPLAIN
--echo #

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;

drop table t1, t2, t3;

--echo #
--echo # LP BUG#680038 bool close_thread_table(THD*, TABLE**):
--echo #               Assertion `table->key_read == 0' failed in EXPLAIN
--echo #

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));

--error ER_SUBQUERY_NO_1_ROW
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));

drop table t1, t2, t3;

--echo #
--echo # BUG#52317: Assertion failing in Field_varstring::store() 
--echo # 	    at field.cc:6833
--echo #

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);

DROP TABLE t2;
DROP TABLE t1;

--echo #
--echo # LP BUG#680846: Crash in clear_tables() with subqueries
--echo #

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;

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;

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;

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;

# these queries are like the ones above, but without the ON clause,
# resulting in a different crash (failed assert)
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;

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;

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;

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;

drop table t1,t2;

--echo #
--echo # LP BUG#682683 Crash in create_tmp_table called from
--echo #               JOIN::init_execution
--echo #

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;
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
EXPLAIN
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;

INSERT INTO t1 VALUES (1),(2);

EXPLAIN
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
--error ER_SUBQUERY_NO_1_ROW
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 GROUP BY field1;
EXPLAIN
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;
--error ER_SUBQUERY_NO_1_ROW
SELECT (SELECT f1 FROM t1) AS field1 FROM t2 ORDER BY field1;

drop table t1,t2;

--echo #
--echo # LP BUG#680943 Assertion `!table || (!table->read_set ||
--echo # bitmap_is_set(table->read_set, field_index))' failed with subquery
--echo #

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 ;

drop table t1,t2;

--echo #
--echo # LP BUG#715062: Wrong result with VIEW + UNION + subquery in maria-5.3-mwl89
--echo #

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 );
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );

EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v1 );
SELECT ( 5 ) IN ( SELECT * FROM v1 );

EXPLAIN
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);

EXPLAIN
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);

EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v2 );
SELECT ( 5 ) IN ( SELECT * FROM v2 );

SET @@optimizer_switch = 'in_to_exists=on,semijoin=off,materialization=off';

EXPLAIN
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN ( SELECT * FROM v1 );

EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v1 );
SELECT ( 5 ) IN ( SELECT * FROM v1 );

EXPLAIN
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);
SELECT 'bug' FROM DUAL WHERE ( 5 ) IN (SELECT * FROM v2);

EXPLAIN
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);
SELECT 'bug' FROM t3 WHERE ( 5 ) IN (SELECT * FROM v2);

EXPLAIN
SELECT ( 5 ) IN ( SELECT * FROM v2 );
SELECT ( 5 ) IN ( SELECT * FROM v2 );

set @@optimizer_switch=@save_optimizer_switch;

drop table t1,t2,t3;
drop view v1,v2;

--echo #
--echo # LP BUG#715069 Wrong result with GROUP BY inside subquery and materialization=off
--echo #

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 );

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 );

EXPLAIN
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);

EXPLAIN
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);

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 );

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 );

EXPLAIN
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);
SELECT * FROM t2 WHERE (f1b, f2b) IN (SELECT max(f1a), f2a FROM t1 GROUP BY f1a, f2a);

EXPLAIN
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);
SELECT * FROM t2 WHERE (f1b) IN (SELECT max(f1a) FROM t1 GROUP BY f1a, f2a);

set @@optimizer_switch=@save_optimizer_switch;

drop table t0,t1,t2;


--echo #                                                                                                                                                     
--echo # LP BUG#715759 Wrong result with in_to_exists=on in maria-5.3-mwl89
--echo #                                                                                                                                                     

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);
SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);

set @@optimizer_switch=@save_optimizer_switch;
drop table t1, t2;

--echo #                                                                                                                                                     
--echo # LP BUG#772309 join_tab_cmp_straight(): Assertion `!jt2->emb_sj_nest' failed in maria-5.3-mwl89 with semijoin
--echo #                                                                                                                                                     

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 )
);
SELECT STRAIGHT_JOIN (
        SELECT f2 FROM t1 WHERE ( f2 ) IN ( SELECT t3.f2 FROM t3 JOIN t2 ON t2.f1 = 1 )
);

drop table t1, t2, t3;


--echo #                                                                                                                                                     
--echo # LP BUG#777597 Wrong result with multipart keys, in_to_exists=on, NOT IN in MWL#89
--echo #                                                                                                                                                     

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);
SELECT * FROM t1 WHERE ( 6 ) NOT IN ( SELECT t2.f3 FROM t2 JOIN t3 ON t3.f10 = t2.f10);

drop table t1,t2,t3;


--echo #                                                                                                                                                     
--echo # LP BUG#778413 Third crash in select_describe() in maria-5.3-mwl89
--echo #                                                                                                                                                     

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));

drop table t1, t2, t3;

--echo #
--echo # LP BUG#802979 Assertion `table->key_read == 0' in close_thread_table
--echo #

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;

-- error ER_SUBQUERY_NO_1_ROW
SELECT *
FROM t1, t2
WHERE t2.f2 = (SELECT f2 FROM t3
               WHERE EXISTS (SELECT DISTINCT f1 FROM t4))
  AND t2.f2 = t1.f1;

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;

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;

drop table t1,t2,t3,t4;

--echo #
--echo # LP BUG#611690 Crash in select_describe() with nested subqueries
--echo #

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));
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));

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));
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));

drop table t1, t2;

set @@optimizer_switch = @old_optimizer_switch;


--echo #
--echo # LP BUG#612543 Crash in Item_field::used_tables() with view + subquery + prepared statements
--echo #

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 );
PREPARE st1 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st1;
EXECUTE st1;

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 );
PREPARE st2 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st2;
EXECUTE st2;

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 );
PREPARE st3 FROM "SELECT * FROM t1 JOIN v2 ON t1.f2 > 'a' WHERE v2.f3 IN ( SELECT f2 FROM t1 )";
EXECUTE st3;
EXECUTE st3;

set @@optimizer_switch = @old_optimizer_switch;

drop table t1, t2;
drop view v2;


--echo #
--echo # LP BUG#611396 RQG: crash in Item_field::register_field_in_read_map with semijoin=off
--echo # 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;

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;
EXECUTE st1;

set @@optimizer_switch = @old_optimizer_switch;

drop table t1, t2, t3;


--echo #
--echo # LP BUG#611382 RQG: Query returns extra rows when executed with materialization=on
--echo #

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 ) ;

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 ) ;

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 ) ;

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 ) ;

set @@optimizer_switch = @old_optimizer_switch;

drop table t1, t2, t3;


--echo #
--echo # LP BUG#782305: Wrong result/valgrind warning in Item_sum_hybrid::any_value()
--echo #

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;
EXECUTE st1;

PREPARE st2 FROM '
SELECT * FROM t2
WHERE f2 <= SOME (SELECT f1-2 FROM t1 UNION SELECT f1-1 FROM t1);
';
EXECUTE st2;
EXECUTE st2;

drop table t1, t2;

--echo #
--echo # LP BUG#825018: Crash in check_and_do_in_subquery_rewrites() with corrlated subquery in select list
--echo #

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();
CALL sp1();
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;
execute st1;
deallocate prepare st1;

drop table t1, t2, t3;

set optimizer_switch=@subselect4_tmp;

--echo #
--echo # LP BUG#833702 Wrong result with nested IN and singlerow subqueries and equality propagation
--echo #

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 );

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);
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);

drop table t2, t3, t4;

--echo #
--echo # BUG#934597: Assertion `! is_set()' failed in Diagnostics_area::set_ok_status(THD...
--echo #
CREATE TABLE t1 ( a VARCHAR(1) );
INSERT INTO t1 VALUES ('u'),('k');
--error ER_SUBQUERY_NO_1_ROW
CREATE TABLE t2 AS
 SELECT a AS field1 FROM t1
 WHERE ( SELECT alias1.a
         FROM t1 AS alias1
       ) IS NOT NULL;
--error ER_BAD_TABLE_ERROR
DROP TABLE t2;
DROP TABLE t1;

--echo #
--echo # LP BUG#1000649 EXPLAIN shows incorrectly a non-correlated constant IN subquery is correlated
--echo #

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;

drop table ten, t1, five;

--echo #
--echo # LP BUG#1008773 Wrong result (NULL instead of a value) with no matching rows, subquery in FROM and HAVING
--echo #

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;
SELECT MAX(a), ( SELECT 1 FROM t2 ) AS bb FROM t1;

EXPLAIN
SELECT MAX(a), 1 in ( SELECT b FROM t2 ) AS bb FROM t1;
SELECT MAX(a), 1 in ( SELECT b FROM t2 ) AS bb FROM t1;

EXPLAIN
SELECT MAX(a), 1 >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;
SELECT MAX(a), 1 >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;


EXPLAIN
SELECT MAX(a), ( SELECT 1 FROM t2 where b = a) AS bb FROM t1;
SELECT MAX(a), ( SELECT 1 FROM t2 where b = a) AS bb FROM t1;

EXPLAIN
SELECT MAX(a), a in ( SELECT b FROM t2 ) AS bb FROM t1;
SELECT MAX(a), a in ( SELECT b FROM t2 ) AS bb FROM t1;

EXPLAIN
SELECT MAX(a), a >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;
SELECT MAX(a), a >= ALL ( SELECT b FROM t2 ) AS bb FROM t1;

drop table t1, t2;

set optimizer_switch=@subselect4_tmp;

--echo #
--echo # MDEV-3928  Assertion `example' failed in Item_cache::is_expensive_processor with a 2-level IN subquery 
--echo #

CREATE TABLE t1 (a1 INT, b1 TIME) ENGINE=MyISAM;
INSERT INTO t1 VALUES (4,'21:22:34'),(6,'10:50:38');

CREATE TABLE t2 (a2 INT, b2 TIME) ENGINE=MyISAM;
INSERT INTO t2 VALUES (8, '06:17:39');

CREATE TABLE t3 (a3 INT, b3 TIME) ENGINE=MyISAM;
INSERT INTO t3 VALUES (1,'00:00:01'),(7,'00:00:02');

EXPLAIN
SELECT * FROM t1 WHERE a1 IN ( 
  SELECT a2 FROM t2 WHERE a2 IN ( 
    SELECT a3 FROM t3 WHERE b2 = b1 AND b2 <= b1 ORDER BY b3 
  )
);

SELECT * FROM t1 WHERE a1 IN ( 
  SELECT a2 FROM t2 WHERE a2 IN ( 
    SELECT a3 FROM t3 WHERE b2 = b1 AND b2 <= b1 ORDER BY b3 
  )
);
drop table t1, t2, t3;

--echo #
--echo # MDEV-4056:Server crashes in Item_func_trig_cond::val_int
--echo # with FROM and NOT IN subqueries, LEFT JOIN, derived_merge+in_to_exists
--echo #

set @optimizer_switch_MDEV4056 = @@optimizer_switch;
SET optimizer_switch = 'derived_merge=on,in_to_exists=on';

CREATE TABLE t1 (a VARCHAR(1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('x'),('d');

CREATE TABLE t2 (pk INT PRIMARY KEY, b INT, c VARCHAR(1))  ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,2,'v'),(2,150,'v');

SELECT * FROM t1 LEFT JOIN (  
  SELECT * FROM t2 WHERE ( pk, pk ) NOT IN ( 
    SELECT MIN(b), SUM(pk) FROM t1
  ) 
) AS alias1 ON (a = c) 
WHERE b IS NULL OR a < 'u';

drop table t1,t2;
set @@optimizer_switch = @optimizer_switch_MDEV4056;

--echo #
--echo # MDEV-5103: server crashed on singular Item_equal
--echo #

CREATE TABLE t1 (
  a enum('p','r') NOT NULL DEFAULT 'r',
  b int NOT NULL DEFAULT '0',
  c char(32) NOT NULL,
  d varchar(255) NOT NULL,
  PRIMARY KEY (a, b), UNIQUE KEY idx(a, c)
);
INSERT INTO t1 VALUES ('r', 1, 'ad18832202b199728921807033a8a515', '001_cbr643');

CREATE TABLE t2 (
  a enum('p','r') NOT NULL DEFAULT 'r',
  b int NOT NULL DEFAULT '0',
  e datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  PRIMARY KEY (a, b, e)
);
INSERT INTO t2 VALUES ('r', 1, '2013-10-05 14:25:30');

SELECT * FROM t1 AS t 
  WHERE a='r' AND (c,b) NOT IN (SELECT c,b FROM t2 WHERE (c,b)=(t.c,t.b));

DROP TABLE t1, t2;

--echo #
--echo # MDEV-5468: assertion failure with a simplified condition in subselect
--echo #

CREATE TABLE t1 (a int, b int) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,1);

CREATE TABLE t2 ( pk int PRIMARY KEY, c INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,4), (2,6);

SELECT ( SELECT MAX(b) FROM t1, t2 WHERE pk = a AND b < from_sq.c ) AS select_sq,
       COUNT( DISTINCT from_sq.c ) 
FROM ( SELECT DISTINCT t2_1.* FROM t2 AS t2_1, t2 AS t2_2 ) AS from_sq
GROUP BY select_sq ;

DROP TABLE t1,t2;


CREATE TABLE t1 (id int, a2 char(2), a3 char(3)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'BE','BEL');

CREATE TABLE t2 (id int, a2 char(2), a3 char(3)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,'BE','BEL'), (2,'MX','MEX');
CREATE VIEW v2 AS SELECT DISTINCT * FROM t2;

SELECT * FROM t1 AS outer_t1, v2  
WHERE v2.a3 = outer_t1.a3 
      AND EXISTS ( SELECT * FROM t1 WHERE a2 < v2.a2 AND id = outer_t1.id )
      AND outer_t1.a3 < 'J'    
ORDER BY v2.id;

DROP VIEW v2;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-5686: degenerate disjunct in NOT IN subquery
--echo #

CREATE TABLE t1 (a int, b int, c varchar(3)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,1,'CAN'),(2,2,'AUS');

CREATE TABLE t2 (f int) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3);

EXPLAIN EXTENDED
SELECT * FROM t2 
  WHERE f NOT IN (SELECT b FROM t1
                    WHERE 0 OR (c IN ('USA') OR c NOT IN ('USA')) AND a = b);

SELECT * FROM t2 
  WHERE f NOT IN (SELECT b FROM t1
                    WHERE 0 OR (c IN ('USA') OR c NOT IN ('USA')) AND a = b);

DROP TABLE t1,t2;

--echo #
--echo # MDEV-3899  Valgrind warnings (blocks are definitely lost) in filesort on IN subquery with SUM and DISTINCT
--echo #

CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(9);

CREATE TABLE t2 (b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (8);

SELECT * FROM t1 
WHERE (1, 1) IN (SELECT a, SUM(DISTINCT a) FROM t1, t2 GROUP BY a);

drop table t1, t2;

--echo #
--echo # MDEV-3902  Assertion `record_length == m_record_length' failed at Filesort_buffer::alloc_sort_buffer 
--echo #

CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(2);

CREATE TABLE t2 (pk INT PRIMARY KEY, b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,1),(2,7);

CREATE TABLE t3 (c INT) ENGINE=MyISAM;
INSERT INTO t3 VALUES (8);

SELECT * FROM t1
WHERE (1, 5)  IN (SELECT b, SUM(DISTINCT b) FROM t2, t3 GROUP BY b);

SELECT * FROM t2 AS alias1, t2 AS alias2
WHERE EXISTS ( SELECT 1 ) AND (alias2.pk = alias1.b )
ORDER BY alias1.b;

drop table t1, t2, t3;

--echo #
--echo # MDEV-4144 simple subquery causes full scan instead of range scan
--echo #

CREATE TABLE t1 (id int not null auto_increment, x int not null, primary key(id));
INSERT INTO t1 (x) VALUES (0),(0),(0);

EXPLAIN
SELECT x FROM t1 WHERE id > (SELECT MAX(id) - 1000 FROM t1) ORDER BY x LIMIT 1;
SELECT x FROM t1 WHERE id > (SELECT MAX(id) - 1000 FROM t1) ORDER BY x LIMIT 1;

drop table t1;

--echo #
--echo # MDEV-7691: Assertion `outer_context || !*from_field || *from_field == not_found_field' ...
--echo #
set optimizer_switch=default;
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (4),(6);
 
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1),(8);
 
PREPARE stmt FROM "
SELECT * FROM t2
HAVING 0 IN (
  SELECT a FROM t1
  WHERE a IN ( 
    SELECT a FROM t1
    WHERE b = a
  )
)
"; 
 
EXECUTE stmt;
EXECUTE stmt;

--echo # Alternative test case, without HAVING
CREATE TABLE t3 (i INT) ENGINE=MyISAM;
INSERT INTO t3 VALUES (4),(6);
 
PREPARE stmt FROM "
SELECT * FROM t3 AS t10
WHERE EXISTS ( 
  SELECT * FROM t3 AS t20 WHERE t10.i IN ( 
    SELECT i FROM t3 
  ) 
)";
 
EXECUTE stmt;
EXECUTE stmt;

drop table t1, t2, t3;

--echo #
--echo # MDEV-11078: NULL NOT IN (non-empty subquery) should never return results
--echo #

create table t1(a int,b int);
create table t2(a int,b int);
insert into t1 value (1,2);
select (NULL)  in (select 1 from t1);
select (null)  in (select 1 from t2);
select 1 in (select 1 from t1);
select 1 in (select 1 from t2);
select 1 from dual where null in (select 1 from t1);
select 1 from dual where null in (select 1 from t2);
select (null,null) in (select * from t1);
select (null,null) in (select * from t2);
select 1 from dual where null not in (select 1 from t1);
select 1 from dual where null not in (select 1 from t2);
drop table t1,t2;


--echo #
--echo # MDEV-6486: Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))'
--echo # failed with SELECT SQ, TEXT field
--echo #

CREATE TABLE t1 (a VARCHAR(8), KEY(a)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('foo'),( 'bar');

CREATE TABLE t2 (b VARCHAR(8), c TINYTEXT, KEY(b)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('baz','baz'),('qux', 'qux');

SELECT ( SELECT COUNT(*) FROM t1 WHERE a = c ) AS field, COUNT(DISTINCT c)
FROM t2 WHERE b <= 'quux' GROUP BY field;
drop table t1,t2;

--echo #
--echo # MDEV-15555: select from DUAL where false yielding wrong result when in a IN
--echo #

explain 
SELECT 2 IN (SELECT 2 from DUAL WHERE 1 != 1);
SELECT 2 IN (SELECT 2 from DUAL WHERE 1 != 1);

SET optimizer_switch= @@global.optimizer_switch;
set @@tmp_table_size= @@global.tmp_table_size;

--echo #
--echo # MDEV-14515: Wrong results for tableless query with subquery in WHERE
--echo #             and implicit aggregation
--echo #

create table t1 (i1 int, i2 int);
insert into t1 values (1314, 1084),(1330, 1084),(1401, 1084),(580, 1084);

create table t2 (cd int);
insert into t2 values
  (1330), (1330), (1330), (1330), (1330), (1330), (1330), (1330),
  (1330), (1330), (1330), (1330), (1330), (1330), (1330), (1330);

select max(10) from dual
  where exists (select 1 from t2 join t1 on t1.i1 = t2.cd  and t1.i2 = 345);

insert into t2 select * from t2;

select max(10) from dual
  where exists (select 1 from t2 join t1 on t1.i1 = t2.cd  and t1.i2 = 345);

DROP TABLE t1,t2;

--echo #
--echo # MDEV-10232 Scalar result of subquery changes after adding an outer select stmt
--echo #

create table t1(c1 int, c2 int, primary key(c2));
insert into t1 values(2,1),(1,2);
select (select c1 from t1 group by c1,c2 order by c1 limit 1) as x;
(select c1 from t1 group by c1,c2 order by c1 limit 1);
drop table t1;

--echo #
--echo # MDEV-22498: SIGSEGV in Bitmap<64u>::merge on SELECT
--echo #

set @save_sql_select_limit= @@sql_select_limit;
SET sql_select_limit=0;

CREATE TABLE t1(b INT, c INT);
CREATE TABLE t2(a INT, b INT);
INSERT INTO t1 VALUES (1,1),(2,2),(3,3);
INSERT INTO t2 VALUES (1,1),(2,2),(3,3);

let $query=
SELECT sum(a), t2.a, t2.b FROM t2 HAVING t2.a IN (SELECT t2.b FROM t1);

eval EXPLAIN EXTENDED $query;
eval $query;

SET @@sql_select_limit= @save_sql_select_limit;

eval EXPLAIN EXTENDED $query;
eval $query;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-17606: Query returns wrong results (while using CHARACTER SET utf8)
--echo #

CREATE TABLE t1(l1 varchar(10), i2 int);
INSERT INTO t1 VALUES ('e',2),('o',6),('x',4);
CREATE TABLE t2 (v1 varchar(10) CHARACTER SET utf8, KEY v1 (v1(3)));
INSERT INTO t2 VALUES  ('k'),('rid'),('f'),('x');

EXPLAIN EXTENDED SELECT * FROM t1 where  ( t1.l1 < ANY (SELECT MAX(t2.v1) FROM t2));
SELECT * FROM t1 where  ( t1.l1 < ANY (SELECT MAX(t2.v1) FROM t2));
DROP TABLE t1, t2;

--echo #
--echo # MDEV-19232: Floating point precision / value comparison problem
--echo #

CREATE TABLE t1 (region varchar(60), area decimal(10,0), population decimal(11,0));
INSERT INTO t1 VALUES ('Central America and the Caribbean',91,11797);
INSERT INTO t1 VALUES ('Central America and the Caribbean',442,66422);

SET @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='subquery_cache=on';

SELECT
population, area, population/area,
cast(population/area as DECIMAL(20,9)) FROM t1 LIMIT 1;

SELECT * FROM t1 A
WHERE population/area = (SELECT MAX(population/area) from t1 B where A.region = B.region);

SET optimizer_switch='subquery_cache=off';
SELECT * FROM t1 A
WHERE population/area = (SELECT MAX(population/area) from t1 B where A.region = B.region);

SET @@optimizer_switch= @save_optimizer_switch;

DROP TABLE t1;

--echo #
--echo # MDEV-22852: SIGSEGV in sortlength (optimized builds)
--echo #

SET @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='subquery_cache=off';
CREATE TABLE t1 (a INT,b INT);
INSERT INTO t1 VALUES (0,0),(0,0);
SELECT (SELECT DISTINCT t1i.b FROM t1 t1i GROUP BY t1i.a ORDER BY MAX(t1o.b)) FROM t1 AS t1o;
SET @@optimizer_switch= @save_optimizer_switch;
DROP TABLE t1;

--echo # End of 10.2 tests

--echo #
--echo # MDEV-19134: EXISTS() slower if ORDER BY is defined
--echo #
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

create table t1(a int, b int);
insert into t1 select
  A.a + B.a*10, A.a + B.a*10 from t0 A, t0 B;

create table t2 as select * from t1;

--echo # This will be converted to semi-join:
explain
select * from t1
where exists (select * from t2 where t2.a=t1.a order by t2.b);

--echo # query with a non-zero constant LIMIT is converted to semi-join, too:
explain
select * from t1
where exists (select * from t2 where t2.a=t1.a order by t2.b limit 2);

--echo # Zero LIMIT should prevent the conversion (but it is not visible atm
--echo #   due to MDEV-19429)
explain
select * from t1
where exists (select * from t2 where t2.a=t1.a order by t2.b limit 0);

--echo # LIMIT+OFFSET prevents the conversion:
explain
select * from t1
where exists (select * from t2 where t2.a=t1.a order by t2.b limit 2,3);

--echo # This will be merged and converted into a semi-join:
explain
select * from t1 where t1.a in (select t2.a from t2 order by t2.b);


drop table t0, t1, t2;

--echo # End of 10.4 tests