แผนทั่วไปใดมีแผน POS 21%?ไม่จำเป็นต้องใช้ทุกตาราง
Which conventional plan has a POS plan of 21%?It is not neccessary to use all the tables.
 table_name_14:  (conventional_plans [ VARCHAR ] pos_plans [ VARCHAR) ]
SELECT conventional_plans FROM table_name_14 WHERE pos_plans = "21%"