How many original airdates did season 20 have?
CREATE TABLE table_22181917_2 (
    original_air_date VARCHAR,
    season__number VARCHAR
)
SELECT COUNT(original_air_date) FROM table_22181917_2 WHERE season__number = 20
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many original airdates did season 20 have? ### Input: CREATE TABLE table_22181917_2 (
    original_air_date VARCHAR,
    season__number VARCHAR
) ### Response: SELECT COUNT(original_air_date) FROM table_22181917_2 WHERE season__number = 20