How many seasons did Peter Deluise direct Stargate SG-1?
CREATE TABLE table_15431959_1 (
    no_in_season INTEGER,
    directed_by VARCHAR
)
SELECT MAX(no_in_season) FROM table_15431959_1 WHERE directed_by = "Peter DeLuise"
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 seasons did Peter Deluise direct Stargate SG-1? ### Input: CREATE TABLE table_15431959_1 (
    no_in_season INTEGER,
    directed_by VARCHAR
) ### Response: SELECT MAX(no_in_season) FROM table_15431959_1 WHERE directed_by = "Peter DeLuise"