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


--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.

--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,
    @old_optimizer_use_mrr         = @@session.optimizer_use_mrr,
    @old_engine_condition_pushdown = @@session.engine_condition_pushdown;

SET SESSION OPTIMIZER_SWITCH = 'materialization=off,semijoin=off,loosescan=off,firstmatch=off';
SET SESSION optimizer_use_mrr = 'force';
SET SESSION engine_condition_pushdown = 1;

 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,
    @@session.optimizer_use_mrr         = @old_optimizer_use_mrr,
    @@session.engine_condition_pushdown = @old_engine_condition_pushdown;

DROP TABLE t1;

--echo #
--echo # BUG#45863 "Assertion failed: (fixed == 0), function fix_fields(),
--echo #            file item.cc, line 4448"
--echo #
--disable_warnings
DROP TABLE IF EXISTS C, BB;
--enable_warnings

CREATE TABLE C (
  varchar_nokey varchar(1) NOT NULL
);
INSERT INTO C VALUES
  ('k'),('a'),(''),('u'),('e'),('v'),('i'),
  ('t'),('u'),('f'),('u'),('m'),('j'),('f'),
  ('v'),('j'),('g'),('e'),('h'),('z');
CREATE TABLE BB (
  varchar_nokey varchar(1) NOT NULL
);
INSERT INTO BB VALUES ('i'),('t');
-- error ER_OPERAND_COLUMNS
SELECT varchar_nokey FROM C
WHERE (varchar_nokey, OUTR) IN (SELECT varchar_nokey
                                FROM BB);
-- error ER_BAD_FIELD_ERROR
SELECT varchar_nokey FROM C
WHERE (varchar_nokey, OUTR) IN (SELECT varchar_nokey, varchar_nokey
                                FROM BB);
DROP TABLE C,BB;

--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,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 #
SELECT @old_icp:=@@engine_condition_pushdown;
SET SESSION 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 engine_condition_pushdown=@old_icp;

DROP TABLE t1,t2;