Att-Cmp ตัวใดมี GP-GS 7-1?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Which Att-Cmp has a GP-GS of 7-1?It is not neccessary to use all the tables.
 table_name_21:  (att_cmp [ VARCHAR ] gp_gs [ VARCHAR) ]
SELECT att_cmp FROM table_name_21 WHERE gp_gs = "7-1"