Fixed typo in the function name.

test suite added.

mysql-test/r/func_misc.result

@@ -305,6 +305,39 @@ SELECT 1 from t1 HAVING NAME_CONST('', a);
 ERROR HY000: Incorrect arguments to NAME_CONST
 DROP TABLE t1;
 #
+# Test or correct maybe_null of last_value
+#
+CREATE TABLE t1 (a char(2) not null );
+INSERT INTO t1 VALUES (4),(7),(1);
+set @optimizer_switch_save= @@optimizer_switch;
+set optimizer_switch='materialization=off';
+CREATE TABLE tv (e char(2) not null ) engine=mysql;
+Warnings:
+Warning	1286	Unknown storage engine 'mysql'
+Warning	1266	Using storage engine MyISAM for table 'tv'
+INSERT INTO tv VALUES (1);
+CREATE ALGORITHM=MERGE VIEW v_merge AS SELECT * FROM tv;
+CREATE ALGORITHM=MERGE VIEW vm AS SELECT * FROM tv;
+explain extended
+select a from t1 left join v_merge on (a=e) where last_value(NULL,e) not in (select last_value(NULL,e) from vm);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	tv	ALL	NULL	NULL	NULL	NULL	1	100.00	Using where; Using join buffer (flat, BNL join)
+2	DEPENDENT SUBQUERY	tv	system	NULL	NULL	NULL	NULL	1	100.00	
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` left join (`test`.`tv`) on((`test`.`tv`.`e` = `test`.`t1`.`a`)) where (not(<expr_cache><last_value(NULL,`test`.`tv`.`e`)>(<in_optimizer>(last_value(NULL,`test`.`tv`.`e`),<exists>(select last_value(NULL,'1') from dual where trigcond((<cache>(last_value(NULL,`test`.`tv`.`e`)) = last_value(NULL,'1'))))))))
+explain extended
+select a from t1 left join v_merge on (a=e) where e not in (select last_value(NULL,e) from vm);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	tv	ALL	NULL	NULL	NULL	NULL	1	100.00	Using where; Using join buffer (flat, BNL join)
+2	DEPENDENT SUBQUERY	tv	system	NULL	NULL	NULL	NULL	1	100.00	
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` left join (`test`.`tv`) on((`test`.`tv`.`e` = `test`.`t1`.`a`)) where (not(<expr_cache><`test`.`tv`.`e`>(<in_optimizer>(`test`.`tv`.`e`,<exists>(select last_value(NULL,'1') from dual where trigcond((<cache>(`test`.`tv`.`e`) = last_value(NULL,'1'))))))))
+set optimizer_switch=@optimizer_switch_save;
+drop view  v_merge, vm;
+drop table t1,tv;
+#
 # End of 5.5 tests
 #
 #

mysql-test/t/func_misc.test

@@ -348,6 +348,25 @@ SELECT 1 from t1 HAVING NAME_CONST('', a);
 
 DROP TABLE t1;
 
+--echo #
+--echo # Test or correct maybe_null of last_value
+--echo #
+CREATE TABLE t1 (a char(2) not null );
+INSERT INTO t1 VALUES (4),(7),(1);
+set @optimizer_switch_save= @@optimizer_switch;
+set optimizer_switch='materialization=off';
+CREATE TABLE tv (e char(2) not null ) engine=mysql;
+INSERT INTO tv VALUES (1);
+CREATE ALGORITHM=MERGE VIEW v_merge AS SELECT * FROM tv;
+CREATE ALGORITHM=MERGE VIEW vm AS SELECT * FROM tv;
+explain extended
+select a from t1 left join v_merge on (a=e) where last_value(NULL,e) not in (select last_value(NULL,e) from vm);
+explain extended
+select a from t1 left join v_merge on (a=e) where e not in (select last_value(NULL,e) from vm);
+set optimizer_switch=@optimizer_switch_save;
+drop view  v_merge, vm;
+drop table t1,tv;
+
 
 --echo #
 --echo # End of 5.5 tests

sql/item_func.h

@@ -2053,9 +2053,9 @@ public:
   enum_field_types field_type() const { return last_value->field_type(); }
   bool const_item() const { return 0; }
   void evaluate_sideeffects();
-  void update_uesd_tables()
+  void update_used_tables()
   {
-    Item_func_last_value::update_used_tables();
+    Item_func::update_used_tables();
     maybe_null= last_value->maybe_null;
   }
 };