merge

mysql-test/r/partition.result

 drop table if exists t1, t2;
+CREATE TABLE t1 (a INT NOT NULL, KEY(a))
+PARTITION BY RANGE(a)
+(PARTITION p1 VALUES LESS THAN (200), PARTITION pmax VALUES LESS THAN MAXVALUE);
+INSERT INTO t1 VALUES (2), (40), (40), (70), (60), (90), (199);
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a ASC;
+a
+60
+70
+90
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
+a
+60
+70
+90
+INSERT INTO t1 VALUES (200), (250), (210);
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a ASC;
+a
+60
+70
+90
+199
+200
+210
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a ASC;
+a
+200
+210
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a DESC;
+a
+90
+70
+60
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a DESC;
+a
+210
+200
+199
+90
+70
+60
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a DESC;
+a
+210
+200
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
+a
+199
+200
+210
+60
+70
+90
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
+a
+200
+210
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
+a
+60
+70
+90
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
+a
+199
+200
+210
+60
+70
+90
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
+a
+200
+210
+DROP TABLE t1;
 CREATE TABLE t1 (
 a INT NOT NULL,   
 b MEDIUMINT NOT NULL,   

mysql-test/t/partition.test

@@ -14,6 +14,35 @@
 drop table if exists t1, t2;
 --enable_warnings
 
+#
+# Bug#40494: Crash MYSQL server crashes on range access with partitioning
+#            and order by
+#
+CREATE TABLE t1 (a INT NOT NULL, KEY(a))
+PARTITION BY RANGE(a)
+(PARTITION p1 VALUES LESS THAN (200), PARTITION pmax VALUES LESS THAN MAXVALUE);
+INSERT INTO t1 VALUES (2), (40), (40), (70), (60), (90), (199);
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a ASC;
+--sorted_result
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
+INSERT INTO t1 VALUES (200), (250), (210);
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a ASC;
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a ASC;
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a DESC;
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a DESC;
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a DESC;
+--sorted_result
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
+--sorted_result
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
+--sorted_result
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
+--sorted_result
+SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
+--sorted_result
+SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
+DROP TABLE t1;
+
 #
 # Bug35931: Index search may return duplicates
 #

sql/ha_partition.cc

@@ -4084,7 +4084,7 @@ int ha_partition::read_range_next()
 {
   DBUG_ENTER("ha_partition::read_range_next");
 
-  if (m_ordered)
+  if (m_ordered_scan_ongoing)
   {
     DBUG_RETURN(handle_ordered_next(table->record[0], eq_range));
   }