Czy w MySQL istnieje możliwość ustawienia pól "total" na zero, jeśli są one NULL?Powrót 0, jeśli pole jest puste w MySQL
Oto co mam:
SELECT uo.order_id, uo.order_total, uo.order_status,
(SELECT SUM(uop.price * uop.qty)
FROM uc_order_products uop
WHERE uo.order_id = uop.order_id
) AS products_subtotal,
(SELECT SUM(upr.amount)
FROM uc_payment_receipts upr
WHERE uo.order_id = upr.order_id
) AS payment_received,
(SELECT SUM(uoli.amount)
FROM uc_order_line_items uoli
WHERE uo.order_id = uoli.order_id
) AS line_item_subtotal
FROM uc_orders uo
WHERE uo.order_status NOT IN ("future", "canceled")
AND uo.uid = 4172;
Dane wychodzi dobrze, z wyjątkiem zerowego pola powinny być 0
.
Jak mogę zwrócić 0 dla NULL w MySQL?
byłoby to IFNULL ((SELECT SUM (uop.price * uop.qty) FROM uc_order_products UOP GDZIE uo.order_id = uop.order_id) AS products_subtotal, 0)? – Kevin
@Kevin: Nie - alias idzie na końcu. –
Gotcha. To działa! Dzięki. – Kevin