Fixed bug #21853: assert failure for a grouping query with

an ALL/ANY quantified subquery in HAVING.
The Item::split_sum_func2 method should not create Item_ref
for objects of any class derived from Item_subselect.


mysql-test/r/subselect.result:
  Added a test case for bug #21853.
mysql-test/t/subselect.test:
  Added a test case for bug #21853.

mysql-test/r/subselect.result

@@ -2946,3 +2946,39 @@ ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10;
 a	a	b
 10	1	359
 drop table t1,t2;
+CREATE TABLE t1 (                  
+field1 int NOT NULL,                 
+field2 int NOT NULL,                 
+field3 int NOT NULL,                 
+PRIMARY KEY  (field1,field2,field3)  
+);
+CREATE TABLE t2 (             
+fieldA int NOT NULL,            
+fieldB int NOT NULL,            
+PRIMARY KEY  (fieldA,fieldB)     
+);
+INSERT INTO t1 VALUES
+(1,1,1), (1,1,2), (1,2,1), (1,2,2), (1,2,3), (1,3,1);
+INSERT INTO t2 VALUES (1,1), (1,2), (1,3);
+SELECT field1, field2, COUNT(*)
+FROM t1 GROUP BY field1, field2;
+field1	field2	COUNT(*)
+1	1	2
+1	2	3
+1	3	1
+SELECT field1, field2
+FROM  t1
+GROUP BY field1, field2
+HAVING COUNT(*) >= ALL (SELECT fieldB 
+FROM t2 WHERE fieldA = field1);
+field1	field2
+1	2
+SELECT field1, field2
+FROM  t1
+GROUP BY field1, field2
+HAVING COUNT(*) < ANY (SELECT fieldB 
+FROM t2 WHERE fieldA = field1);
+field1	field2
+1	1
+1	3
+DROP TABLE t1, t2;

mysql-test/t/subselect.test

@@ -1911,4 +1911,41 @@ SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r
 
 drop table t1,t2;
 
+#
+# Bug #21853: assert failure for a grouping query with
+#             an ALL/ANY quantified subquery in HAVING 
+#
+
+CREATE TABLE t1 (                  
+  field1 int NOT NULL,                 
+  field2 int NOT NULL,                 
+  field3 int NOT NULL,                 
+  PRIMARY KEY  (field1,field2,field3)  
+);
+CREATE TABLE t2 (             
+  fieldA int NOT NULL,            
+  fieldB int NOT NULL,            
+  PRIMARY KEY  (fieldA,fieldB)     
+); 
+
+INSERT INTO t1 VALUES
+  (1,1,1), (1,1,2), (1,2,1), (1,2,2), (1,2,3), (1,3,1);
+INSERT INTO t2 VALUES (1,1), (1,2), (1,3);
+
+SELECT field1, field2, COUNT(*)
+  FROM t1 GROUP BY field1, field2;
+
+SELECT field1, field2
+  FROM  t1
+    GROUP BY field1, field2
+      HAVING COUNT(*) >= ALL (SELECT fieldB 
+                                FROM t2 WHERE fieldA = field1);
+SELECT field1, field2
+  FROM  t1
+    GROUP BY field1, field2
+      HAVING COUNT(*) < ANY (SELECT fieldB 
+                               FROM t2 WHERE fieldA = field1);
+
+DROP TABLE t1, t2;
+
 # End of 4.1 tests

sql/item.cc

@@ -387,6 +387,7 @@ void Item::split_sum_func2(THD *thd, Item **ref_pointer_array,
   }
   else if ((type() == SUM_FUNC_ITEM ||
             (used_tables() & ~PARAM_TABLE_BIT)) &&
+           type() != SUBSELECT_ITEM &&
            type() != REF_ITEM)
   {
     /*