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SQL错误（102）：“>”附近的语法不正确

[英]SQL Error (102): Incorrect syntax near '>'

 原文  2015-04-20 23:08:05  9   3    sql/ sql-server

问题描述

I am having some real trouble with this CASE statement... It says I get an error near > which seems to point to the 3rd line where its checking > 15. However I don't see anything wrong with this query. 我在使用CASE语句时遇到了一些真正的麻烦...它说我在>附近出现错误，该错误似乎指向其检查> 15的第三行。但是，此查询没有发现任何错误。

I tried searching around on google and here and didn't see anyone with this exact problem, hopefully you can point it out. 我尝试在Google和此处进行搜索，但是没有人遇到这个确切的问题，希望您能指出来。 

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

Thanks in advance! 提前致谢！

3 个解决方案

解决方案1
 5 已采纳  2015-04-20 23:12:51

Your problem lies in the CASE expression. 您的问题出在CASE表达式中。 When using multiple conditions, you use WHEN instead of ELSE . 使用多个条件时，请使用WHEN而不是ELSE 。 ELSE should only be used once. 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'...

解决方案2
 2  2015-04-20 23:13:04

You've got the syntax wrong; 您的语法有误； you can't use multiple ELSE clauses - it should be multiple WHENs: 您不能使用多个ELSE子句-应该是多个WHEN： 

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'

See the documentation for more information and examples. 请参阅文档以获取更多信息和示例。

解决方案3
 2  2015-04-20 23:16:08

I believe it is your formatting of the CASE statement, I put your query is SSMS and fixed it this way, and it passes validation: 我相信这是您对CASE语句的格式，我将您的查询设置为SSMS并通过这种方式进行了修复，并通过了验证：

you can only use 1 ELSE clause per CASE statement 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

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