Question

我在这个CASE声明中遇到了一些麻烦...... 它说我在＆gt;附近收到错误这似乎指向第3行，其中检查＆gt; 15.但是我没有看到这个查询有什么问题。

我尝试在谷歌和这里搜索，并没有看到任何人有这个确切的问题，希望你能指出来。

SELECT 
CASE 
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 15 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 30 THEN '15+'
    ELSE DATEDIFF(day, C1.RecvdDate, GETDATE()) > 30 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 60 THEN '30+'
    ELSE DATEDIFF(day, C1.RecvdDate, GETDATE()) > 60 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 90 THEN '60+'
    ELSE DATEDIFF(day, C1.RecvdDate, GETDATE()) > 90 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 120 THEN '90+'
    ELSE '120+'
END AS 'Days', 
C1.CallID AS 'Ticket#', A1.WhoAcknow AS 'Acknowledged By', C1.RecvdDate AS 'Received On', C1.Category, COUNT(*) As Assignments 

FROM [HEAT].[heat].[CallLog] C1 
LEFT JOIN [HEAT].[heat].[Asgnmnt] A1 ON C1.CallID = A1.CallID 
WHERE DATEDIFF(day, C1.RecvdDate, GETDATE()) > 15 AND C1.CallStatus = 'Open' AND C1.Category <> 'welfare' AND C1.CustType <> 'IFS' AND 
A1.Resolution = '' AND (A1.GroupName = 'Help Desk' AND A1.Assignee = 'EITS PIV Badge') 
GROUP BY C1.CallID, A1.WhoAcknow, C1.RecvdDate, C1.Category 
ORDER BY C1.RecvdDate ASC

提前致谢！

Answer 1

您的问题在于CASE表达式。使用多个条件时，请使用WHEN代替ELSE。 ELSE只能使用一次。

SELECT 
CASE 
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 15 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 30 THEN '15+'
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 30 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 60 THEN '30+'
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 60 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 90 THEN '60+'
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 90 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 120 THEN '90+'
    ELSE '120+'
END AS 'Days'...

Answer 2

你的语法错了;你不能使用多个ELSE子句 - 它应该是多个WHENs：

SELECT 
CASE 
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 15 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 30 THEN '15+'
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 30 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 60 THEN '30+'
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 60 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 90 THEN '60+'
    WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 90 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 120 THEN '90+'
    ELSE '120+'
END AS 'Days'

有关更多信息和示例，请参阅the documentation。

Answer 3

我相信这是你对CASE语句的格式化，我把你的查询是SSMS并以这种方式修复它，并通过验证：

每个CASE语句只能使用1个ELSE子句

SELECT 
    CASE 
        WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 15 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 30 THEN '15+'
        WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 30 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 60 THEN '30+'
        WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 60 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 90 THEN '60+'
        WHEN DATEDIFF(day, C1.RecvdDate, GETDATE()) > 90 AND DATEDIFF(day, C1.RecvdDate, GETDATE()) <= 120 THEN '90+'
        ELSE '120+'
    END AS 'Days', 
    C1.CallID AS 'Ticket#', A1.WhoAcknow AS 'Acknowledged By', C1.RecvdDate AS 'Received On', C1.Category, COUNT(*) As Assignments 

    FROM [HEAT].[heat].[CallLog] C1 
    LEFT JOIN [HEAT].[heat].[Asgnmnt] A1 ON C1.CallID = A1.CallID 
    WHERE DATEDIFF(day, C1.RecvdDate, GETDATE()) > 15 AND C1.CallStatus = 'Open' AND C1.Category <> 'welfare' AND C1.CustType <> 'IFS' AND 
    A1.Resolution = '' AND (A1.GroupName = 'Help Desk' AND A1.Assignee = 'EITS PIV Badge') 
    GROUP BY C1.CallID, A1.WhoAcknow, C1.RecvdDate, C1.Category 
    ORDER BY C1.RecvdDate ASC

SQL错误（102）：'＆gt;'附近的语法不正确

3 个答案: