after merge fix

sql/item.h:
  Auto merged

mysql-test/r/subselect.result

@@ -1831,6 +1831,15 @@ Warnings:
 Note	1276	Field or reference 'up.a' of SELECT #2 was resolved in SELECT #1
 Note	1003	select test.up.a AS `a`,test.up.b AS `b` from test.t1 up where exists(select 1 AS `Not_used` from test.t1 where (test.t1.a = test.up.a))
 drop table t1;
+CREATE TABLE t1 (t1_a int);
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t2 (t2_a int, t2_b int, PRIMARY KEY (t2_a, t2_b));
+INSERT INTO t2 VALUES (1, 1), (1, 2);
+SELECT * FROM t1, t2 table2 WHERE t1_a = 1 AND table2.t2_a = 1
+HAVING table2.t2_b = (SELECT MAX(t2_b) FROM t2 WHERE t2_a = table2.t2_a);
+t1_a	t2_a	t2_b
+1	1	2
+DROP TABLE t1, t2;
 CREATE TABLE t1 (id int(11) default NULL,name varchar(10) default NULL);
 INSERT INTO t1 VALUES (1,'Tim'),(2,'Rebecca'),(3,NULL);
 CREATE TABLE t2 (id int(11) default NULL, pet varchar(10) default NULL);

mysql-test/t/subselect.test

@@ -1168,6 +1168,18 @@ select * from t1 up where exists (select * from t1 where t1.a=up.a);
 explain extended select * from t1 up where exists (select * from t1 where t1.a=up.a);
 drop table t1;
 
+#
+# Bug #4102: subselect in HAVING
+#
+
+CREATE TABLE t1 (t1_a int);
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t2 (t2_a int, t2_b int, PRIMARY KEY (t2_a, t2_b));
+INSERT INTO t2 VALUES (1, 1), (1, 2);
+SELECT * FROM t1, t2 table2 WHERE t1_a = 1 AND table2.t2_a = 1
+  HAVING table2.t2_b = (SELECT MAX(t2_b) FROM t2 WHERE t2_a = table2.t2_a);
+DROP TABLE t1, t2;
+
 #
 # Test problem with NULL and derived tables (Bug #4097)
 #

sql/item.h

@@ -822,7 +822,10 @@ class Item_ref :public Item_ident
   void save_org_in_field(Field *field)	{ (*ref)->save_org_in_field(field); }
   enum Item_result result_type () const { return (*ref)->result_type(); }
   enum_field_types field_type() const   { return (*ref)->field_type(); }
-  table_map used_tables() const		{ return (*ref)->used_tables(); }
+  table_map used_tables() const		
+  { 
+    return depended_from ? OUTER_REF_TABLE_BIT : (*ref)->used_tables(); 
+  }
   void set_result_field(Field *field)	{ result_field= field; }
   bool is_result_field() { return 1; }
   void save_in_result_field(bool no_conversions)