SQL自定义函数split 将数组(分隔字符串)返回阵列（表）

创建时间：2007-09-29 投稿人：浏览次数：127

SQL自定义函数split

Create Function Split(@Strs As Nvarchar(1024),@Separator as Nvarchar(10),@Index as Int)
Returns Nvarchar(1024) As
begin
     Declare @i As Int, @charpos As Nvarchar(1024)
     Set @charpos = @Strs
     Set @i = 1
     If @Index < 0
            Begin
              Set @charpos = "超出下界"
            End
     Else
       Begin
       While @i <= (@Index - 1)
            Begin
             If CharIndex(@Separator, @charpos) > 0
              Begin
                 Set @charpos = Substring(@charpos, CharIndex(@Separator, @charpos) + 1, Len(@charpos) - CharIndex(@Separator, @charpos))
              End
       Else
       Begin
         Set @charpos = "超出上界"
         Break
       End
      Set @i = @i + 1
    End

   If @charpos <> "超出上界"
        Begin
         If CharIndex(@Separator, @charpos) > 0
             Begin
                   Set @charpos = Left(@charpos, CharIndex(@Separator, @charpos) - 1)
              End
        End
      End
     Return @charpos
End
--调用
select dbo.Split("sdf|abc|csc|aldsfj|sfj|取出原素|asdf|adf|...","|",6)
--返回取出原素

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