“Oracle Test, jeśli 0” Kod odpowiedzi

Oracle Test, jeśli 0

-- Replace 0 values by a default value
SELECT nvl(NullIf(COL, 0), 99) FROM (SELECT 0 AS COL FROM DUAL);    -- 99
SELECT nvl(NullIf(COL, 0), 0) FROM (SELECT 500 AS COL FROM DUAL);   -- 500