Fix for the bug #971: ORDER BY DESC doesn't return correct num of rows with BDB and an indexed column.

2 files changed, 44 insertions, 0 deletions

diff --git a/mysql-test/r/bdb.result b/mysql-test/r/bdb.result
index eb97d19136d..ebc2866183c 100644
--- a/mysql-test/r/bdb.result
+++ b/mysql-test/r/bdb.result
@@ -1123,3 +1123,34 @@ a	b
 select * from t2;
 a	b
 drop table t1,t2;
+create table t1  (x int not null, index(x)) type=bdb;
+insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+select * from t1 where x <= 10 and x >= 7;
+x
+7
+8
+9
+10
+select * from t1 where x <= 10 and x >= 7 order by x;
+x
+7
+8
+9
+10
+select * from t1 where x <= 10 and x >= 7 order by x desc;
+x
+10
+9
+8
+7
+select * from t1 where x <= 8 and x >= 5 order by x desc;
+x
+8
+7
+6
+5
+select * from t1 where x < 8 and x > 5 order by x desc;
+x
+7
+6
+drop table t1;
diff --git a/mysql-test/t/bdb.test b/mysql-test/t/bdb.test
index 608d4bf5042..d0cc63a9389 100644
--- a/mysql-test/t/bdb.test
+++ b/mysql-test/t/bdb.test
@@ -783,3 +783,16 @@ select * from t1;
 select * from t2;
 select * from t2;
 drop table t1,t2;
+
+#
+# The bug #971
+#
+
+create table t1  (x int not null, index(x)) type=bdb;
+insert into t1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+select * from t1 where x <= 10 and x >= 7;
+select * from t1 where x <= 10 and x >= 7 order by x;
+select * from t1 where x <= 10 and x >= 7 order by x desc;
+select * from t1 where x <= 8 and x >= 5 order by x desc;
+select * from t1 where x < 8 and x > 5 order by x desc;
+drop table t1;