ซีซั่น 19 มีกี่ตอน?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many episodes were there in season 19?It is not neccessary to use all the tables.
 table_17355820_1:  (title [ VARCHAR ] season__number [ VARCHAR) ]
SELECT COUNT(title) FROM table_17355820_1 WHERE season__number = 19