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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
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