INSERT INTO product_custom (product_id, option_type, option_value, price_adjust)
VALUES (#{productId}, #{optionType}, #{optionValue}, #{priceAdjust})
UPDATE product_custom
SET option_type = #{optionType}, option_value = #{optionValue}, price_adjust = #{priceAdjust}
WHERE id = #{id}
DELETE FROM product_custom WHERE id = #{id}
DELETE FROM product_custom WHERE product_id = #{productId}