set @save_ext_key_optimizer_switch=@@optimizer_switch;
#
# MDEV-3992 Server crash or valgrind errors in test_if_skip_sort_order/test_if_cheaper_ordering
# on GROUP BY with indexes on InnoDB table
#
CREATE TABLE t1 (
pk INT PRIMARY KEY,
a VARCHAR(1) NOT NULL,
KEY (pk)
) ENGINE=InnoDB;
set optimizer_switch='extended_keys=on';
INSERT INTO t1 VALUES (1,'a'),(2,'b');
EXPLAIN
SELECT COUNT(*), pk field1, pk AS field2
FROM t1 WHERE a = 'r' OR pk = 183 
GROUP BY field1, field2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	index	PRIMARY,pk	PRIMARY	4	NULL	2	Using where
SELECT COUNT(*), pk field1, pk AS field2
FROM t1 WHERE a = 'r' OR pk = 183 
GROUP BY field1, field2;
COUNT(*)	field1	field2
EXPLAIN
SELECT COUNT(*), pk field1 FROM t1
WHERE a = 'r' OR pk = 183 GROUP BY field1, field1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	index	PRIMARY,pk	PRIMARY	4	NULL	2	Using where
SELECT COUNT(*), pk field1 FROM t1
WHERE a = 'r' OR pk = 183 GROUP BY field1, field1;
COUNT(*)	field1
drop table t1;
set optimizer_switch=@save_ext_key_optimizer_switch;
#
# MDEV-4002 Server crash or valgrind errors in Item_func_group_concat::setup and Item_func_group_concat::add
#
CREATE TABLE t1 ( 
pk INT NOT NULL PRIMARY KEY, 
d1 DOUBLE, 
d2 DOUBLE, 
i INT NOT NULL DEFAULT '0',
KEY (i)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,1.0,1.1,1),(2,2.0,2.2,2);
PREPARE stmt FROM " 
SELECT DISTINCT i, GROUP_CONCAT(  d1, d2 ORDER BY d1, d2 ) 
FROM t1 a1 NATURAL JOIN t1 a2 GROUP BY i WITH ROLLUP 
";
EXECUTE stmt;
i	GROUP_CONCAT(  d1, d2 ORDER BY d1, d2 )
1	11.1
2	22.2
NULL	11.1,22.2
EXECUTE stmt;
i	GROUP_CONCAT(  d1, d2 ORDER BY d1, d2 )
1	11.1
2	22.2
NULL	11.1,22.2
DROP TABLE t1;
End of 5.5 tests
#
# MDEV-5719: Wrong result with GROUP BY and LEFT OUTER JOIN
#
CREATE TABLE t1 (oidGroup INT, oid INT PRIMARY KEY)ENGINE=INNODB;
INSERT INTO t1 VALUES (1,1),(1,2),(1,3),(1,4);
CREATE TABLE t2 (oid INT PRIMARY KEY)ENGINE=INNODB;
INSERT INTO t2 VALUES (3);
SELECT a.oidGroup, a.oid, b.oid FROM t1 a LEFT JOIN t2 b ON
a.oid=b.oid WHERE a.oidGroup=1;
oidGroup	oid	oid
1	1	NULL
1	2	NULL
1	3	3
1	4	NULL
SELECT a.oidGroup, a.oid, b.oid FROM t1 a LEFT JOIN t2 b ON
a.oid=b.oid WHERE a.oidGroup=1 GROUP BY a.oid;
oidGroup	oid	oid
1	1	NULL
1	2	NULL
1	3	3
1	4	NULL
DROP TABLE t1, t2;
#
# MDEV-7193: Incorrect Query Result (MySQL Bug 68897) in MariaDB 10.0.14
# (fixed by MDEV-5719)
#
CREATE TABLE  `t1` (
`param` int(11) NOT NULL,
`idx` int(11) NOT NULL,
`text` varchar(255) default NULL,
PRIMARY KEY  (`param`,`idx`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `t1` (`param`, `idx`, `text`) VALUES
(1, 0, 'select'),
(1, 1, 'Kabel mit Stecker 5-polig'),
(1, 2, 'Kabel ohne Stecker'),
(2, 0, 'number'),
(2, 1, '22'),
(2, 2, '25');
CREATE TABLE `t2` (
`id` int PRIMARY KEY
);
INSERT INTO t2 VALUES (1),(2),(3),(4);
SELECT t2.id AS id, T.text AS xtext,GROUP_CONCAT(T3.text) AS optionen
FROM t2
LEFT JOIN t1 AS T  ON(T.param=t2.id AND T.idx=0 )
LEFT JOIN t1 AS T3 ON(T3.param=t2.id AND T3.idx>0 ) 
GROUP BY t2.id
ORDER BY id ASC;
id	xtext	optionen
1	select	Kabel mit Stecker 5-polig,Kabel ohne Stecker
2	number	22,25
3	NULL	NULL
4	NULL	NULL
SELECT t2.id AS id, T.text AS xtext,GROUP_CONCAT(T3.text) AS optionen
FROM t2
LEFT JOIN t1 AS T  ON(T.param=t2.id AND T.idx=0 )
LEFT JOIN t1 AS T3 ON(T3.param=t2.id AND T3.idx>0 ) 
GROUP BY t2.id
ORDER BY id DESC;
id	xtext	optionen
4	NULL	NULL
3	NULL	NULL
2	number	22,25
1	select	Kabel mit Stecker 5-polig,Kabel ohne Stecker
DROP TABLE t1, t2;
#
# MDEV-11162: Assertion `num_records == m_idx_array.size()' failed in Filesort_buffer::alloc_sort_buffer(uint, uint)
#
CREATE TABLE t1 (i INT) ENGINE=InnoDB;
SELECT ( SELECT DISTINCT GROUP_CONCAT(SLEEP(0)) FROM t1 GROUP BY i );
( SELECT DISTINCT GROUP_CONCAT(SLEEP(0)) FROM t1 GROUP BY i )
NULL
SELECT i FROM t1 order by i LIMIT 1;
i
DROP TABLE t1;
# Port of testcase:
#
# Bug#20819199 ASSERTION FAILED IN TEST_IF_SKIP_SORT_ORDER
#
CREATE TABLE t0 ( a INT );
INSERT INTO t0 VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
CREATE TABLE t1 (
pk INT NOT NULL AUTO_INCREMENT,
a INT,
b INT,
PRIMARY KEY (pk),
KEY idx1 (a),
KEY idx2 (b, a),
KEY idx3 (a, b)
) ENGINE = InnoDB;
INSERT INTO t1 (a, b) SELECT t01.a, t02.a FROM t0 t01, t0 t02;
ANALYZE TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
EXPLAIN SELECT DISTINCT a, MAX(b) FROM t1 WHERE a >= 0 GROUP BY a,a;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	idx1,idx3	idx3	5	NULL	100	Using where; Using index
SELECT DISTINCT a, MAX(b) FROM t1 WHERE a >= 0 GROUP BY a,a;
a	MAX(b)
1	10
2	10
3	10
4	10
5	10
6	10
7	10
8	10
9	10
10	10
DROP TABLE t0, t1;
# End of tests