#
# Test GROUP BY queries that utilize InnoDB extended keys
#

--source include/have_innodb.inc

set @save_ext_key_optimizer_switch=@@optimizer_switch;

--echo #
--echo # MDEV-3992 Server crash or valgrind errors in test_if_skip_sort_order/test_if_cheaper_ordering
--echo # on GROUP BY with indexes on InnoDB table
--echo #

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;

SELECT COUNT(*), pk field1, pk AS field2
FROM t1 WHERE a = 'r' OR pk = 183 
GROUP BY field1, field2;

EXPLAIN
SELECT COUNT(*), pk field1 FROM t1
WHERE a = 'r' OR pk = 183 GROUP BY field1, field1;

SELECT COUNT(*), pk field1 FROM t1
WHERE a = 'r' OR pk = 183 GROUP BY field1, field1;

drop table t1;

set optimizer_switch=@save_ext_key_optimizer_switch;

--echo #
--echo # MDEV-4002 Server crash or valgrind errors in Item_func_group_concat::setup and Item_func_group_concat::add
--echo #

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;
EXECUTE stmt;

DROP TABLE t1;

--echo End of 5.5 tests

--echo #
--echo # MDEV-5719: Wrong result with GROUP BY and LEFT OUTER JOIN
--echo #
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);

# Returns a value
SELECT a.oidGroup, a.oid, b.oid FROM t1 a LEFT JOIN t2 b ON
a.oid=b.oid WHERE a.oidGroup=1;

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;

DROP TABLE t1, t2;

--echo #
--echo # MDEV-7193: Incorrect Query Result (MySQL Bug 68897) in MariaDB 10.0.14
--echo # (fixed by MDEV-5719)
--echo #

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;

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;

DROP TABLE t1, t2;

--echo #
--echo # MDEV-11162: Assertion `num_records == m_idx_array.size()' failed in Filesort_buffer::alloc_sort_buffer(uint, uint)
--echo #

CREATE TABLE t1 (i INT) ENGINE=InnoDB;
SELECT ( SELECT DISTINCT GROUP_CONCAT(SLEEP(0)) FROM t1 GROUP BY i );
SELECT i FROM t1 order by i LIMIT 1;
DROP TABLE t1;

--echo # Port of testcase:
--echo #
--echo # Bug#20819199 ASSERTION FAILED IN TEST_IF_SKIP_SORT_ORDER
--echo #

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;

let $query=
SELECT DISTINCT a, MAX(b) FROM t1 WHERE a >= 0 GROUP BY a,a;

eval EXPLAIN $query;
eval $query;

DROP TABLE t0, t1;

--echo # End of tests