Backport of the fix for BUG#33730 "Full table scan instead selected partitions for query more than 10 partitions"

from 6.0, made in sergefp@mysql.com-20090205190644-q8632sniogedhtsu

1 files changed, 19 insertions, 0 deletions

diff --git a/mysql-test/r/partition_pruning.result b/mysql-test/r/partition_pruning.result
index 769d499fc0a..d8bff2cbe01 100644
--- a/mysql-test/r/partition_pruning.result
+++ b/mysql-test/r/partition_pruning.result
@@ -2229,3 +2229,22 @@ explain partitions select * from t1 where recdate < '2006-01-01 00:00:00';
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	2	Using where
 drop table t1;
+# 
+# BUG#33730 Full table scan instead selected partitions for query more than 10 partitions
+# 
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1 (a int)
+partition by range(a+0) (
+partition p0 values less than (64),
+partition p1 values less than (128),
+partition p2 values less than (255)
+);
+insert into t1 select A.a + 10*B.a from t0 A, t0 B;
+explain partitions select * from t1 where a between 10 and 13;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	64	Using where
+explain partitions select * from t1 where a between 10 and 10+33;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p0,p1,p2	ALL	NULL	NULL	NULL	NULL	100	Using where
+drop table t0, t1;