ซีรีส์ 81 ฤดูกาลใดคือ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
What is the season for series 81?It is not neccessary to use all the tables.
 table_name_52:  (season__number [ VARCHAR ] series__number [ VARCHAR) ]
SELECT season__number FROM table_name_52 WHERE series__number = 81