#
# 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

