Sql 如果一个条件在运行中失败，但仍必须选择记录，该怎么办？

我试图只挑选那些在OPENINGDATE和GETDATE之间datediff为 声明@NotificationAllowed位 Set@NotificationAllowed=ISNULLSelect NotificationAllowed来自角色，其中RoleID=@RoleID，0 如果@NotificationAllowed=1 开始 选择@NotificationAllowed作为允许，Works.NIT_No，Works.WorkNo，Works.WorkName，DATEDIFFday，Convertdate，GETDATE，Works.OpeningDate作为TotalDays保留 ，Convertvarchar11，Works.OpeningDate，106作为OpeningDate 从作品 其中DATEDIFFday、Convertdate、GETDATE、Works.OpeningDate介于0和3之间 和 CONVERTvarchar5，Works.OpeningTime，108>CONVERTvarchar5，GETDATE，108 和 Works.Organization\u ID=Case当@RoleID=1时，则Works.Organization\u ID ELSE@OrgID end 终止 其他的 开始 选择0作为允许，选择NIT_No、选择WorkNo、选择WorkName、选择TotalDaysRemaining，选择null作为OpeningDate 终止

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只需将这两个日期条件与OR组合即可。我还更改了Datediff功能，使其不再具有另一个功能，而不会使其变得更复杂。

到目前为止，您尝试了什么？为什么不将AND和OR与要检查的条件结合使用呢？你可以简单地在一个表达式中写两次相同的条件，比如A和B，或者A和C，或者不是B和C。另外，将日期转换为文本来比较它们会增加不必要的工作。自2008年以来，这种方法一直奏效：将[MyDate]作为时间来使用

Declare @NotificationAllowed bit
    Set @NotificationAllowed= ISNULL((Select NotificationAllowed from Roles where RoleID= @RoleID),0)

    IF @NotificationAllowed=1
    BEGIN
        Select  @NotificationAllowed as IsAllowed, Works.NIT_No, Works.WorkNo, Works.WorkName, DATEDIFF(day, Convert(date,GETDATE()), Works.OpeningDate) as TotalDaysRemaining 
                ,Convert(varchar(11), Works.OpeningDate, 106) as OpeningDate
        from Works
        Where DATEDIFF(day, Convert(date,GETDATE()), Works.OpeningDate) <=3
        AND 
        DATEDIFF(day, Convert(date,GETDATE()), Works.OpeningDate) >=0
        AND 
        CONVERT(varchar(5), Works.OpeningTime, 108) >  CONVERT(varchar(5), GETDATE(), 108) 
        AND
        Works.Organization_ID= Case When @RoleID=1  then Works.Organization_ID ELSE @OrgID end 
    END 
    ELSE
    BEGIN
        Select  0 as IsAllowed, '' AS NIT_No, ''  AS WorkNo, '' AS WorkName, '' as TotalDaysRemaining, null as OpeningDate
    END

Declare @NotificationAllowed bit
    Set @NotificationAllowed= ISNULL((Select NotificationAllowed from Roles where RoleID= @RoleID),0)

    IF @NotificationAllowed=1
    BEGIN
        Select  @NotificationAllowed as IsAllowed, Works.NIT_No, Works.WorkNo, Works.WorkName, DATEDIFF(day, Convert(date,GETDATE()), Works.OpeningDate) as TotalDaysRemaining 
                ,Convert(varchar(11), Works.OpeningDate, 106) as OpeningDate
        from Works
        Where (DATEDIFF(day, Convert(date,GETDATE()), Works.OpeningDate) BETWEEN 0 and 3
        OR
        CONVERT(varchar(5), Works.OpeningTime, 108) >  CONVERT(varchar(5), GETDATE(), 108)) 
        AND
        Works.Organization_ID= Case When @RoleID=1  then Works.Organization_ID ELSE @OrgID end 
    END 
    ELSE
    BEGIN
        Select  0 as IsAllowed, '' AS NIT_No, ''  AS WorkNo, '' AS WorkName, '' as TotalDaysRemaining, null as OpeningDate
    END