IF EXISTS (SELECT 1 FROM SABITLER WHERE SABITMODUL = '22' AND SABITKONU = 94)
BEGIN
    UPDATE SABITLER
    SET SABITINT = 0
    WHERE SABITMODUL = '22' AND SABITKONU = 94 AND SABITINT <> 0;
END
ELSE
BEGIN
    INSERT INTO SABITLER (SABITMODUL, SABITKONU, SABITINT)
    VALUES ('22', 94, 0);
END