Merge

mysql-test/r/view.result

@@ -1923,6 +1923,14 @@ ERROR HY000: Field of view 'test.v2' underlying table doesn't have a default val
 set sql_mode=default;
 drop view v2,v1;
 drop table t1;
+create table t1 (f1 int);
+insert into t1 values (1);
+create view v1 as select f1 from t1;
+select f1 as alias from v1;
+alias
+1
+drop view v1;
+drop table t1;
 CREATE TABLE t1 (s1 int, s2 int);
 INSERT  INTO t1 VALUES (1,2);
 CREATE VIEW v1 AS SELECT s2 AS s1, s1 AS s2 FROM t1;

mysql-test/t/view.test

@@ -1762,6 +1762,16 @@ set sql_mode=default;
 drop view v2,v1;
 drop table t1;
 
+#
+# Bug#11399 Use an alias in a select statement on a view
+#
+create table t1 (f1 int);
+insert into t1 values (1);
+create view v1 as select f1 from t1;
+select f1 as alias from v1;
+drop view v1;
+drop table t1;
+
 #
 # Test for bug #6120: SP cache to be invalidated when altering a view
 #

sql/sql_base.cc

@@ -2400,9 +2400,11 @@ Field *view_ref_found= (Field*) 0x2;
     name			name of field
     item_name                   name of item if it will be created (VIEW)
     length			length of name
-    ref				expression substituted in VIEW should be
+    ref	[in/out]		expression substituted in VIEW should be
 				  passed using this reference (return
 				  view_ref_found)
+                                  (*ref != NULL) only if *ref contains
+                                  the item that we need to replace.
     check_grants_table		do check columns grants for table?
     check_grants_view		do check columns grants for view?
     allow_rowid			do allow finding of "_rowid" field?
@@ -2440,11 +2442,6 @@ find_field_in_table(THD *thd, TABLE_LIST *table_list,
     {
       if (!my_strcasecmp(system_charset_info, field_it.name(), name))
       {
-        Item *item= field_it.create_item(thd);
-        if (!item)
-        {
-          DBUG_RETURN(0);
-        }
         if (table_list->schema_table_reformed)
         {
           /*
@@ -2463,6 +2460,19 @@ find_field_in_table(THD *thd, TABLE_LIST *table_list,
 			       name, length))
 	  DBUG_RETURN(WRONG_GRANT);
 #endif
+        Item *item= field_it.create_item(thd);
+        if (!item)
+        {
+          DBUG_RETURN(0);
+        }
+        /*
+          *ref != NULL means that *ref contains the item that we need to
+          replace. If the item was aliased by the user, set the alias to
+          the replacing item.
+         */
+        if (*ref && !(*ref)->is_autogenerated_name)
+          item->set_name((*ref)->name, (*ref)->name_length,
+                         system_charset_info);
         if (register_tree_change)
           thd->change_item_tree(ref, item);
         else