Question

我要求使用逗号分隔字符串（这是表列中的值）在SQL语句的“IN”子句中（SQL server 2008）为此，我使用下面的split函数以表格格式生成字符串，并在SQL查询的“IN”子句中使用它。

ALTER FUNCTION dbo.fnSplit(
@sInputList VARCHAR(8000) -- List of delimited items
 , @sDelimiter VARCHAR(8000) = ',' -- delimiter that separates items
 ) RETURNS @List TABLE (item VARCHAR(8000))

BEGIN
 DECLARE @sItem VARCHAR(8000)
 WHILE CHARINDEX(@sDelimiter,@sInputList,0) <> 0
  BEGIN
    SELECT
     @sItem=RTRIM(LTRIM(SUBSTRING(@sInputList,1,CHARINDEX
      (@sDelimiter,@sInputList,0)-1))),  @sInputList=RTRIM(LTRIM(SUBSTRING(@sInputList,CHARINDEX
      (@sDelimiter,@sInputList,0)+LEN(@sDelimiter),LEN(@sInputList))))

  IF LEN(@sItem) > 0
    INSERT INTO @List SELECT @sItem
  END

 IF LEN(@sInputList) > 0
     INSERT INTO @List SELECT @sInputList -- Put the last item in
     RETURN
  END
GO

select * from dbo.fnSplit('aaa,bbb,ccc', ',')

上面的select语句给出结果为：

Item
aaa
bbb
ccc

现在我需要使用我的SQL语句，该语句在fnSplit函数中返回字符串aaa，bbb，ccc，如下所示

  select * from dbo.fnSplit((SELECT Prefix2Include FROM dbo.vw_PrefixToInclude), ',')

注意： SELECT Prefix2Include FROM dbo.vw_PrefixToInclude returns aaa,bbb,ccc

但这给了我一些语法错误，如下所示：

Msg 102, Level 15, State 1, Line 4
  Incorrect syntax near '('.
  Msg 102, Level 15, State 1, Line 4
  Incorrect syntax near ',

请指导我。

谢谢， Soumya

Answer 1

为什么不这样试试呢

declare @Prefix2Include as Varchar(500)

SELECT  @Prefix2Include = Prefix2Include FROM dbo.vw_PrefixToInclude

select * from dbo.fnSplit(@Prefix2Include , ',')

更新

Select * From @t v 
Where v.EmpPrefix IN 
(select * from dbo.fnSplit(@Prefix2Include, ','))

如何在dbo.fnSplit函数中使用SQL select语句的结果作为输入

1 个答案:

更新