ใครแพ้วันที่ 31 พ.ค. ไม่จำเป็นต้องใช้ทุกโต๊ะ
Who lost on May 31?It is not neccessary to use all the tables.
 table_79781:  "Date" [ text]  "Opponent" [ text]  "Score" [ text]  "Loss" [ text]  "Attendance" [ real]  "Record" [ text] 
SELECT "Loss" FROM table_79781 WHERE "Date" = 'may 31'