CREATE TABLE table_20079 ("No. in season" FLOAT, "No. disc" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB)

What was the original air date of Stargate SG-1 written by Peter Deluise?
SELECT "Original air date" FROM table_20079 WHERE "Written by" = 'Peter DeLuise'
SELECT "Original air date" FROM "table_20079" WHERE "Written by" = 'Peter DeLuise'