Fixed bug with GROUP BY and alias

mysql-test/r/group_by.result:
  Test for group by + alias bug
mysql-test/t/group_by.test:
  Test for group by + alias bug

mysql-test/r/group_by.result

@@ -569,3 +569,22 @@ a	MAX(b)	MAKE_SET(MAX(b), 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h')
 1	4	c
 10	43	a,b,d,f
 drop table t1;
+create table t1 (id int not null, qty int not null);
+insert into t1 values (1,2),(1,3),(2,4),(2,5);
+select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(qty)>2 and cqty>1;
+id	sqty	cqty
+1	5	2
+2	9	2
+select id, sum(qty) as sqty from t1 group by id having sqty>2 and count(qty)>1;
+id	sqty
+1	5
+2	9
+select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sqty>2 and cqty>1;
+id	sqty	cqty
+1	5	2
+2	9	2
+select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(qty)>2 and count(qty)>1;
+id	sqty	cqty
+1	5	2
+2	9	2
+drop table t1;

mysql-test/t/group_by.test

@@ -417,3 +417,15 @@ select a, MAX(b), CONCAT_WS(MAX(b), '43', '4', '5') from t1 group by a;
 select a, MAX(b), ELT(MAX(b), 'a', 'b', 'c', 'd', 'e', 'f') from t1 group by a;
 select a, MAX(b), MAKE_SET(MAX(b), 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h') from t1 group by a;
 drop table t1;
+
+#
+# Problem with group by and alias
+#
+
+create table t1 (id int not null, qty int not null);
+insert into t1 values (1,2),(1,3),(2,4),(2,5);
+select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(qty)>2 and cqty>1;
+select id, sum(qty) as sqty from t1 group by id having sqty>2 and count(qty)>1;
+select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sqty>2 and cqty>1;
+select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(qty)>2 and count(qty)>1;
+drop table t1;

sql/item.cc

@@ -665,6 +665,7 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables)
     maybe_null= (*ref)->maybe_null;
     decimals=	(*ref)->decimals;
     binary=	(*ref)->binary;
+    with_sum_func= (*ref)->with_sum_func;
   }
   return 0;
 }