73
73
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL # Using filesort
74
74
SHOW SESSION STATUS LIKE 'Last_query_cost';
77
77
SELECT a IN (SELECT a FROM t1) FROM t1 LIMIT 1;
80
80
SHOW SESSION STATUS LIKE 'Last_query_cost';
83
83
SELECT (SELECT a FROM t1 LIMIT 1) x FROM t1 LIMIT 1;
86
86
SHOW SESSION STATUS LIKE 'Last_query_cost';
89
89
SELECT * FROM t1 a, t1 b LIMIT 1;
92
92
SHOW SESSION STATUS LIKE 'Last_query_cost';