Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-5.0-opt (6f6fe52a) · Commits · Software / OSDI20 Artifacts / mariadb

mysql-test/r/subselect.result

+104 −0

Original line number	Diff line number	Diff line
		@@ -4139,6 +4139,110 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1;
		(SELECT SUM(t1.a) FROM t2 WHERE a=1)
		3
		DROP TABLE t1,t2;
		create table t1(a int,b int,key(a),key(b));
		insert into t1(a,b) values (1,2),(2,1),(2,3),(3,4),(5,4),(5,5),
		(6,7),(7,4),(5,3);
		select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		sum(a) a
		select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		ERROR HY000: Thread stack overrun detected
		explain select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		id select_type table type possible_keys key key_len ref rows Extra
		1 PRIMARY t1 index a a 5 NULL 9 Using where; Using index
		2 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		3 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		4 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		5 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		6 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		7 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		8 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		9 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		10 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		11 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		12 SUBQUERY t1 range a a 5 NULL 9 Using where; Using temporary; Using filesort
		13 SUBQUERY t1 range a a 5 NULL 1 Using where; Using temporary; Using filesort
		14 SUBQUERY t1 index NULL a 5 NULL 9 Using index
		explain select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		ERROR HY000: Thread stack overrun detected
		drop table t1;
		CREATE TABLE t1 (a1 INT, a2 INT);
		CREATE TABLE t2 (b1 INT, b2 INT);
		INSERT INTO t1 VALUES (100, 200);

mysql-test/t/subselect.test

+96 −0

Original line number	Diff line number	Diff line
		@@ -2987,6 +2987,102 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1;
		SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1;
		DROP TABLE t1,t2;

		#
		# Bug31048: Many nested subqueries may cause server crash.
		#
		create table t1(a int,b int,key(a),key(b));
		insert into t1(a,b) values (1,2),(2,1),(2,3),(3,4),(5,4),(5,5),
		(6,7),(7,4),(5,3);
		# test for the stack overflow bug
		select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		--replace_regex /overrun.*$/overrun detected/
		--error 1436
		select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		# test for the memory consumption & subquery slowness bug
		explain select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		--replace_regex /overrun.*$/overrun detected/
		--error 1436
		explain select sum(a),a from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
		select sum(a) from t1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1
		)group by b limit 1)group by b limit 1)group by b limit 1)
		group by a;
		drop table t1;

		#
		# Bug #31884: Assertion + crash in subquery in the SELECT clause.
		#

sql/item_subselect.cc

+3 −1

Original line number	Diff line number	Diff line
		@@ -1800,7 +1800,9 @@ int subselect_single_select_engine::exec()
		DBUG_RETURN(1);
		}
		}
		if (select_lex->uncacheable && executed)
		if (select_lex->uncacheable &&
		select_lex->uncacheable != UNCACHEABLE_EXPLAIN
		&& executed)
		{
		if (join->reinit())
		{

sql/opt_range.cc

+6 −0

Original line number	Diff line number	Diff line
		@@ -1978,12 +1978,18 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
		keys_to_use.intersect(head->keys_in_use_for_query);
		if (!keys_to_use.is_clear_all())
		{
		#ifndef EMBEDDED_LIBRARY // Avoid compiler warning
		char buff[STACK_BUFF_ALLOC];
		#endif
		MEM_ROOT alloc;
		SEL_TREE *tree= NULL;
		KEY_PART *key_parts;
		KEY *key_info;
		PARAM param;

		if (check_stack_overrun(thd, STACK_MIN_SIZE, buff))
		DBUG_RETURN(0); // Fatal error flag is set

		/* set up parameter that is passed to all functions */
		param.thd= thd;
		param.baseflag=head->file->table_flags();