Ничего он не обновляет

пускай скрипт

DECLARE @table_name VARCHAR(255), -------- ЄрсышЎр ётющёЄт
@query NVARCHAR(255)

DECLARE RunOn_gGroup CURSOR STATIC FOR
SELECT name FROM sysobjects WHERE Type = 'U'

OPEN RunOn_gGroup
FETCH NEXT FROM RunOn_gGroup INTO @table_name

WHILE @@FETCH_STATUS = 0
BEGIN

SET @query = 'Update Statistics ' +@table_Name + ' WITH FULLSCAN'

EXEC sp_executesql @query

FETCH NEXT FROM RunOn_gGroup INTO @table_name
END

CLOSE RunOn_gGroup
DEALLOCATE RunOn_gGroup