SQL Server查询与布尔问题

SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 

alter PROCEDURE [dbo].[TCCPAUsersAndNamesByJobPosition] @EmpOrfreeLance bit 

AS 
BEGIN 
    SET NOCOUNT ON; 

    SELECT distinct t1.UserId , tblCustomers.name 
    FROM tblTime t1 
    inner join tblCustomers on t1.UserId=tblCustomers.custID 
    where (t1.userid in (select distinct custID from tblCustomers where sectionCat Like '%,35%')) 
    AND (t1.UserId in (select distinct custID from tblCustomers where IsEmployee = @EmpOrfreeLance)) 

end

试了一下还与IsEmployee = CONVERT(bit,@EmpOrfreeLance)SQL Server查询与布尔问题

和SET @EmpOrfreeLance= CASE @EmpOrfreeLance WHEN 1 THEN 0 ELSE 0 END

同一切retuns具有相同的结果相同的列表无论什么

它不应该是简单的？ ??

IsEmployee COL-数据类型为(bit,null)

我开发的SQL服务器2008 ..online服务器是2005年它应该是一个问题...

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2012-10-29 LoneXcoder

您可以在'IN'中删除select中的'distinct'关键字，因为它不会执行任何操作。 – Magnus

@Magnus谢谢，已完成，但我将保留它，因为它与您的评论一起作为一个没有效果的例子。 – LoneXcoder

比较空值将始终返回false。你已经说过，IsEmployee可以是null，这可能是你的情况。

1 == NULL => False 
0 == NULL => False 
NULL == NULL => False

尝试使用这样的事情你比较：

(@EmpOrfreeLance IS NULL 
    OR IsEmployee IS NULL 
    OR IsEmployee = @EmpOrfreeLance)

或者

ISNULL(IsEmployee, 0) = ISNULL(@EmpOrfreeLance, 0)

来源

2012-10-29 22:08:52 jtimperley

我应该注意到，这是SQL Server允许您使用数据库和/或查询的ANSI_Nulls选项来控制它的方式。 – jtimperley

什么是那些实际上，我完全忽略了他们：'SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ' – LoneXcoder

我可能失去了一些东西，但你为什么不写这样的查询？

SELECT distinct t1.UserId, tblCustomers.name 
FROM tblTime t1 
inner join tblCustomers on t1.UserId=tblCustomers.custID 
where sectionCat Like '%,35%' AND 
     ISNULL(IsEmployee, CAST(0 As bit)) = @EmpOrfreeLance

而且你将不得不决定做什么的时候IsEmployee为空。（是否是员工）例如，通过使用ISNULL(IsEmployee, CAST(0 As bit))来处理NULL值a false。

来源

2012-10-29 22:16:15 Magnus

我错了CAU的我错过了的事

SELECT distinct t1.UserId , tblCustomers.name 
    FROM tblTime t1 
    inner join tblCustomers on t1.UserId=tblCustomers.custID 
    where (t1.userid in (select distinct custID from tblCustomers where sectionCat Like '%,35%')) 
    AND (t1.UserId in (select distinct custID from tblCustomers where IsEmployee = @EmpOrfreeLance)) 
AND (isActive = 1 AND isActiveAgent = 1 AND sivug Like '%,35%' AND custType = 1) 
or (isActive = 1 AND isActiveAgent = 1 AND sivug Like '%,35%' AND custType = 3) 
or (isActive = 1 AND isActiveAgent = 1 AND sivug Like '%,35%' AND custType between 5 AND 12)

我不想显示所有的数据，我不认为其他线路我emited有一个或

笔记，所以我不得不将其添加到那里

来源

2012-10-29 22:26:39 LoneXcoder

您可以优化与地方：'... AND isActive = 1 AND isActiveAgent = 1 AND sivug LIKE“％，35％'（custType = 1 OR custType = 3或5至12之间的custType）' – Magnus

SQL Server查询与布尔问题

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