計算

Question

列

的所有值我有一個表order_product

我想計算從成本柱和數量的列，其中order_orderNumber = 1100

我如何做到這一切的價值觀？

Answer 1

如果你的意思是總和，你可以這樣做：

SELECT product_id, SUM(quantity) AS totalQuantity, SUM(cost) AS totalCost 
FROM order_product WHERE order_orderNumber = 1100 
GROUP BY product_id