SQLServer2008 标量函数

1）首先点击数据库-可编程行-标量函数，右键新建标量值函数

2）开始写函数

USE [lpp]
GO
/****** Object:  UserDefinedFunction [dbo].[Rand2Valid]    Script Date: 09/10/2016 09:19:34 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:		<Author,Name>
-- Create date: <Create Date,>
-- Description:	<Description,>
-- =============================================
ALTER FUNCTION [dbo].[Rand2Valid] 
(
	-- Add the parameters for the function here
	@a int,@b int
)
RETURNS decimal(10,1)
AS
BEGIN
	-- Declare the return variable here
	DECLARE @r decimal(10,1)

	-- Add the T-sql statements to compute the return value here
	SELECT @r=cast(getRandData*(@b-@a)+@a as decimal(10,1)) from GetRandDataView

	-- Return the result of the function
	RETURN @r

END

3）全部选中这些函数，点击执行，然后才正式创建了，创建时把上面ALTER改为CREATE;