Sql Function 返回表

DEMO1：根据字符串和拆分字符，将字符串转化成表

函数：

ALTER function [dbo].[fn_split](@inputstr varchar(8000), @seprator varchar(10))
returns @temp table (Result varchar(200))
as 
begin
  declare @i int
  set @inputstr = rtrim(ltrim(@inputstr))
  set @i = charindex(@seprator , @inputstr)
  while @i >= 1
  begin
    insert @temp values(left(@inputstr , @i - 1))
    set @inputstr = substring(@inputstr , @i + 1 , len(@inputstr) - @i)
    set @i = charindex(@seprator , @inputstr)
  end
  if @inputstr <> '\'
  insert @temp values(@inputstr)
  return 
end

调用：

select Result as CityName from fn_split('浙江,江苏,上海', ',')

结果图：

 

DEMO2

USE [Test]
GO
/****** Object:  UserDefinedFunction [dbo].[fun_test2]    Script Date: 2016/3/9 13:59:26 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER FUNCTION [dbo].[fun_test2](@StudentId1 INT,@StudentId2 INT)
RETURNS @Result TABLE
(
	StudentId INT,
	StudentName NVARCHAR(50)
)
AS
BEGIN
	INSERT INTO @Result SELECT StudentId,StudentName FROM [dbo].[Student] WHERE StudentId=@StudentId1
	INSERT INTO @Result SELECT StudentId,StudentName FROM [dbo].[Student] WHERE StudentId=@StudentId2
	RETURN
END
--调用--
--SELECT * FROM [dbo].[fun_test2](1,3)--