Question

我需要从子查询中指定的列返回信息。在下面的子查询中，我试图从PaymentDate列返回信息。当我在查询中尝试选择Order.PaymentDate时，Invalid object name收到错误Order.PaymentDate。我试图将此指定为Payment.PaymentDate但我得到相同的错误。关于如何解决这个问题的任何想法？

(SELECT ID, SUM(amount) AS purchase FROM Order
WHERE Order.PaymentDate BETWEEN '2012-09-01' AND '2012-09-04'
AND Order.amount >=0
    GROUP BY ID)Payment

Answer 1

如果你想在外部查询中使用order.payment日期，你需要group by它，但我怀疑这是你想要的。您想要一个聚合函数，例如max(order.payment)还是min(order.payment)？您不能在同一查询中混合聚合函数和非聚合函数。

如果你想要的是，正如你在另一个答案的评论中所说的那样，要验证你的日期范围标准是否已应用，请返回max（）和min（）值范围，例如：

 (SELECT ID, SUM(amount) AS purchase, 
min(order.paymentdate) as min_payment, 
max(order.paymentdate) as max_payment 
FROM Order
    WHERE Order.PaymentDate BETWEEN '2012-09-01' AND '2012-09-04'
    AND Order.amount >=0
        GROUP BY ID)Payment

Answer 2

由于您获得了日期范围的聚合，因此子查询的任何返回行中都没有任何特定日期。您始终可以在外部查询中以仲裁方式声明日期范围，以显示聚合汇总的日期范围。

SELECT Payment.ID, Payment.purchase, '2012-09-01' AS 'startdate', '2012-09-04' AS 'enddate' 
FROM (SELECT ID, SUM(amount) AS purchase 
     FROM Order 
     WHERE Order.PaymentDate BETWEEN '2012-09-01' AND '2012-09-04' 
     AND Order.amount >=0 
     GROUP BY ID) AS Payment

T-SQL子查询返回列结果

2 个答案: