如何在“Where”子句中使用“and”和“or”

时间:2012-07-23 17:47:10

标签: sql where-clause

我有一个基于一组条件收集信息的查询。基本上我想知道某个地点当天支付的金额是否超过50美元,或者评论部分中是否包含“过滤器”一词......

我的查询是:

SELECT        Store_Id, Paid_Out_Amount, Paid_Out_Comment, Paid_Out_Datetime, Update_UserName, Till_Number
FROM            Paid_Out_Tb
WHERE        (Store_Id = 1929) AND (Paid_Out_Datetime >= DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)) AND (Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, 
                         GETDATE()), 0)) AND (Paid_Out_Amount > 50) OR
                         (Paid_Out_Comment LIKE N'%' + 'Filter' + '%')

问题是它返回460个结果,应该只返回2.

7 个答案:

答案 0 :(得分:7)

您需要将Paid_Out_Amoutn和Paid_Out_Comment条件包装在第二组括号中:

SELECT Store_Id, Paid_Out_Amount, Paid_Out_Comment, Paid_Out_Datetime, 
    Update_UserName, Till_Number 
FROM Paid_Out_Tb 
WHERE (Store_Id = 1929) AND (Paid_Out_Datetime >= 
    DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)) AND 
    (Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, GETDATE()), 0)) AND 
    (
        (Paid_Out_Amount > 50) OR (Paid_Out_Comment LIKE N'%' + 'Filter' + '%')
    )

答案 1 :(得分:5)

这实际上取决于您使用OR的内容。您的Paid_Out_Amount大于50或Paid_Out_Amount类似于N%Filter%。在你的子句

中添加一些括号
WHERE 
(
    (1 = 1)
    AND
    (2 = 2)
)
OR
( 3 = 3 )

答案 2 :(得分:4)

看起来你缺少一组括号:

SELECT        
    Store_Id
    , Paid_Out_Amount
    , Paid_Out_Comment
    , Paid_Out_Datetime
    , Update_UserName
    , Till_Number
FROM            
    Paid_Out_Tb
WHERE        
    Store_Id = 1929
    AND Paid_Out_Datetime >= DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)
    AND Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, GETDATE()), 0)
    AND
    (
        Paid_Out_Amount > 50
        OR
        LOWER(Paid_Out_Comment) LIKE '%filter%'
    )

您还需要查看LIKE命令 - 更新代码以将注释全部设置为小写并搜索字词过滤器。

同时查看BETWEEN命令以进行Paid_Out_Datetime检查

答案 3 :(得分:3)

AND优先于OR。如果要控制优先级,则需要对条件进行分组。试试这个:

SELECT        Store_Id, Paid_Out_Amount, Paid_Out_Comment, Paid_Out_Datetime, Update_UserName, Till_Number
FROM            Paid_Out_Tb
WHERE        (Store_Id = 1929) AND (Paid_Out_Datetime >= DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)) AND (Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, 
                     GETDATE()), 0)) AND ( (Paid_Out_Amount > 50) OR
                     (Paid_Out_Comment LIKE N'%' + 'Filter' + '%') )

答案 4 :(得分:3)

SELECT        Store_Id, Paid_Out_Amount, Paid_Out_Comment, Paid_Out_Datetime, Update_UserName, Till_Number
FROM            Paid_Out_Tb
WHERE        (Store_Id = 1929) AND (Paid_Out_Datetime >= DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)) AND (Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, 
                         GETDATE()), 0)) AND (Paid_Out_Amount > 20) OR
                         (Store_Id = 1929) AND (Paid_Out_Datetime >= DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)) AND (Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, 
                         GETDATE()), 0)) AND (Paid_Out_Comment LIKE N'%' + 'Filter' + '%')

我提出了一些你的建议,并提出了上述建议。这有效。谢谢!

答案 5 :(得分:2)

尝试以下查询:

SELECT        Store_Id, Paid_Out_Amount, Paid_Out_Comment, Paid_Out_Datetime, Update_UserName, Till_Number
FROM            Paid_Out_Tb
WHERE       ((Store_Id = 1929) AND (Paid_Out_Datetime >= DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)) AND (Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, 
                         GETDATE()), 0)) AND (Paid_Out_Amount > 50)) OR
                         (Paid_Out_Comment LIKE N'%' + 'Filter' + '%')

答案 6 :(得分:1)

你需要在paranthesis中包含where子句的第一部分(最多为'OR')。

(
 (Store_Id = 1929) AND (Paid_Out_Datetime >= DATEADD(day, DATEDIFF(day, 0, GETDATE()) - 1, 0)) AND (Paid_Out_Datetime < DATEADD(day, DATEDIFF(day, 0, 
                         GETDATE()), 0)) AND (Paid_Out_Amount > 50)

) OR (Paid_Out_Comment LIKE N'%' + 'Filter' + '%')