Sql中将字符串按分割符拆分

创建函数

 SET ANSI_NULLS ON
 GO

 SET QUOTED_IDENTIFIER ON
 GO

 Create FUNCTION [dbo].[F_Split]
  (
      @SplitString nvarchar(max),  --源字符串
      @Separator nvarchar(10)=' '  --分隔符号，默认为空格
  )
  RETURNS @SplitStringsTable TABLE  --输出的数据表
  (
      [id] int identity(1,1),
      [value] nvarchar(max)
  )
  AS
  BEGIN
      DECLARE @CurrentIndex int;
      DECLARE @NextIndex int;
      DECLARE @ReturnText nvarchar(max);

      SELECT @CurrentIndex=1;
      WHILE(@CurrentIndex<=len(@SplitString))
          BEGIN
              SELECT @NextIndex=charindex(@Separator,@SplitString,@CurrentIndex);
              IF(@NextIndex=0 OR @NextIndex IS NULL)
                  SELECT @NextIndex=len(@SplitString)+1;
                  SELECT @ReturnText=substring(@SplitString,@CurrentIndex,@NextIndex-@CurrentIndex);
                  INSERT INTO @SplitStringsTable([value]) VALUES(@ReturnText);
                  SELECT @CurrentIndex=@NextIndex+1;
              END
      RETURN;
  END
 GO

　　使用：

select * from F_Split('1,2,3,4,5',',')

　　

select * from tb_SysUser u where u.ID in (select value from dbo.F_Split('1,2,3,4',','))