一、创建测试表

 Employees

二、创建表值函数

-- DROP FUNCTION TableIntSplit;

CREATE FUNCTION TableIntSplit(@Text NVARCHAR(4000),@Sign NVARCHAR(4000))
RETURNS @tempTable TABLE(Id INT )
AS
BEGIN
DECLARE @StartIndex INT 
DECLARE @FindIndex INT
DECLARE @Content VARCHAR(4000)

SET @StartIndex = 1 
SET @FindIndex=0

WHILE(@StartIndex <= LEN(@Text))   
BEGIN   
    SELECT @FindIndex = CHARINDEX(@Sign,@Text,@StartIndex)   
    IF(@FindIndex =0 OR @FindIndex IS NULL)   
    BEGIN
        SET @FindIndex = LEN(@Text)+1   
    END 
    SET @Content = LTRIM(RTRIM(SUBSTRING(@Text,@StartIndex,@FindIndex-@StartIndex)))   
    SET @StartIndex = @FindIndex+1   
    INSERT INTO @tempTable ([Id]) VALUES (convert(int, @Content))    
END   
RETURN  
END;

 测试

select * from Employees(NOLOCK)
select * from dbo.TableIntSplit('1,2,3,4,5,6',',')
select t1.LastName,t2.Id from Employees(NOLOCK) t1 join dbo.TableIntSplit('1,2,3,4,5,6',',') t2 on  t1.EmployeeID=t2.Id