Peter Butler ออกจากทีมเมื่อใด?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
When did Peter Butler leave his team?It is not neccessary to use all the tables.
 table_name_12:  (date_outgoing [ VARCHAR ] outgoing_manager [ VARCHAR) ]
SELECT date_outgoing FROM table_name_12 WHERE outgoing_manager = "peter butler"