此查询返回季度销售额,但我想隐藏order_date列以显示在结果中。 order_date仅用于确定该商品是否在季度内购买。如何排除列中出现的结果?
SELECT item.item_id, item.item_name, item.item_type, item.item_price, SUM(orderdetail.order_quantity) AS 'Quantity Ordered',
SUM(item.item_price*orderdetail.order_quantity) AS 'Total Sales Per Item', orders.order_date FROM item
JOIN orderdetail ON item.item_id = orderdetail.item_id
JOIN orders ON orderdetail.order_id = orders.order_id
GROUP BY item.item_id, item.item_name, item.item_price, item.item_type
HAVING order_date BETWEEN '2017-01-01' AND '2017-03-31'
ORDER BY item.item_id;
just删除,SELECT中的orders.order_date –