From 66258ff324a15f3cf1a6ebdb44799bcd2b6b17a3 Mon Sep 17 00:00:00 2001 From: "evgen@moonbone.local" <> Date: Mon, 26 Nov 2007 22:21:46 +0300 Subject: [PATCH] Many files: Test case for the bug#31048 is moved to the subselect_notembedded tests as the embedded server isn't affected by this bug. --- mysql-test/r/subselect.result | 101 ---------------------- mysql-test/r/subselect_notembedded.result | 101 ++++++++++++++++++++++ mysql-test/t/subselect.test | 94 -------------------- mysql-test/t/subselect_notembedded.test | 96 ++++++++++++++++++++ 4 files changed, 197 insertions(+), 195 deletions(-) diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result index ecfc069aa45..bf320e585d6 100644 --- a/mysql-test/r/subselect.result +++ b/mysql-test/r/subselect.result @@ -4140,107 +4140,6 @@ 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 -)group by b 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 -)group by b 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 index a b 5 NULL 9 Using where; Using filesort -3 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -4 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -5 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -6 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -7 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -8 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -9 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -10 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -11 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort -12 SUBQUERY t1 range a a 5 NULL 1 Using where; Using temporary; Using filesort -13 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); diff --git a/mysql-test/r/subselect_notembedded.result b/mysql-test/r/subselect_notembedded.result index 44ae055425e..90aadcae398 100644 --- a/mysql-test/r/subselect_notembedded.result +++ b/mysql-test/r/subselect_notembedded.result @@ -1,3 +1,104 @@ purge master logs before (select adddate(current_timestamp(), interval -4 day)); ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'select adddate(current_timestamp(), interval -4 day))' at line 1 purge master logs before adddate(current_timestamp(), interval -4 day); +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 +)group by b 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 +)group by b 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 index a b 5 NULL 9 Using where; Using filesort +3 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +4 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +5 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +6 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +7 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +8 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +9 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +10 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +11 SUBQUERY t1 index a b 5 NULL 9 Using where; Using filesort +12 SUBQUERY t1 range a a 5 NULL 1 Using where; Using temporary; Using filesort +13 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; diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test index 3af2ec1891d..077e00a4c6e 100644 --- a/mysql-test/t/subselect.test +++ b/mysql-test/t/subselect.test @@ -3000,100 +3000,6 @@ 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 - )group by b 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 - )group by b 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. # diff --git a/mysql-test/t/subselect_notembedded.test b/mysql-test/t/subselect_notembedded.test index c112272e8ad..040c90452b9 100644 --- a/mysql-test/t/subselect_notembedded.test +++ b/mysql-test/t/subselect_notembedded.test @@ -7,3 +7,99 @@ --error 1064 purge master logs before (select adddate(current_timestamp(), interval -4 day)); purge master logs before adddate(current_timestamp(), interval -4 day); + +# +# 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 + )group by b 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 + )group by b 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; + + -- 2.30.9