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Commit b3347a6a authored by unknown's avatar unknown
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Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 

into  moonbone.local:/work/31048-bug-5.0-opt-mysql


sql/item_subselect.cc:
  Auto merged
mysql-test/r/subselect.result:
  Manual merge
mysql-test/t/subselect.test:
  Manual merge
parents ea739898 13105534
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mysql-test/r/subselect.result
View file @ b3347a6a
...@@ -4139,6 +4139,110 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1; ...@@ -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) (SELECT SUM(t1.a) FROM t2 WHERE a=1)
3 3
DROP TABLE t1,t2; 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 t1 (a1 INT, a2 INT);
CREATE TABLE t2 (b1 INT, b2 INT); CREATE TABLE t2 (b1 INT, b2 INT);
INSERT INTO t1 VALUES (100, 200); INSERT INTO t1 VALUES (100, 200);
......
mysql-test/t/subselect.test
View file @ b3347a6a
...@@ -2987,6 +2987,102 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1; ...@@ -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; SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1;
DROP TABLE t1,t2; 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. # Bug #31884: Assertion + crash in subquery in the SELECT clause.
# #
......
sql/item_subselect.cc
View file @ b3347a6a
...@@ -1800,7 +1800,9 @@ int subselect_single_select_engine::exec() ...@@ -1800,7 +1800,9 @@ int subselect_single_select_engine::exec()
DBUG_RETURN(1); DBUG_RETURN(1);
} }
} }
if (select_lex->uncacheable && executed) if (select_lex->uncacheable &&
select_lex->uncacheable != UNCACHEABLE_EXPLAIN
&& executed)
{ {
if (join->reinit()) if (join->reinit())
{ {
......
sql/opt_range.cc
View file @ b3347a6a
...@@ -1978,12 +1978,18 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use, ...@@ -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); keys_to_use.intersect(head->keys_in_use_for_query);
if (!keys_to_use.is_clear_all()) if (!keys_to_use.is_clear_all())
{ {
#ifndef EMBEDDED_LIBRARY // Avoid compiler warning
char buff[STACK_BUFF_ALLOC];
#endif
MEM_ROOT alloc; MEM_ROOT alloc;
SEL_TREE *tree= NULL; SEL_TREE *tree= NULL;
KEY_PART *key_parts; KEY_PART *key_parts;
KEY *key_info; KEY *key_info;
PARAM param; 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 */ /* set up parameter that is passed to all functions */
param.thd= thd; param.thd= thd;
param.baseflag=head->file->table_flags(); param.baseflag=head->file->table_flags();
......
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