Question

我想从TableTransaction（ID_Cust，CustName，TransValue，TransDate，...）中检索特定时期内的数据

在下面的SQL中，我想添加如下的子句：

Where TransDate>1/1/2016 And TransDate<2/1/2016

代码：

SELECT 
    ID_Cust, CustName, SUM(TransValue) As TotalPurchase
FROM
    TTransaction
GROUP BY
    ID_Cust, CustName
HAVING
    SUM(TransValue) < 25000000
ORDER BY
    TotalPurchase DESC

我尝试过这些尝试，但都没有奏效。

SELECT 
    ID_Cust, CustName, SUM(TransValue) As TotalPurchase
FROM 
    TTransaction
WHERE
    TransDate > 1/1/2016 AND TransDate < 2/1/2016
GROUP BY
    ID_Cust, CustName
HAVING
    SUM(TransValue) < 25000000
ORDER BY
    TotalPurchase DESC

SELECT 
    ID_Cust, CustName, SUM(TransValue) As TotalPurchase
FROM 
    TTransaction
WHERE
    TransDate > 1/1/2016 AND TransDate < 2/1/2016
HAVING
    SUM(TransValue) < 25000000
ORDER BY
    TotalPurchase DESC

Answer 1

首先，您需要在日期常量周围使用单引号。其次，使用ISO标准日期格式。所以，试试这个：

Select ID_Cust, CustName, SUM(TransValue) As TotalPurchase
From TTransaction
Where TransDate > '2016-01-01' AND TransDate < '2016-02-01'
Group By ID_Cust, CustName
Having SUM(TransValue)<25000000
Order By TotalPurchase DESC

聚合函数中的子句

1 个答案: