www.ctrt.net > 如何用sql sErvEr 2005创建一个用户自定义函数,以...

如何用sql sErvEr 2005创建一个用户自定义函数,以...

CREATE FUNCTION func_GetScore( @SNo nvarchar(20), @CourseName nvarchar(50) ) RETURNS decimal(18,2) AS BEGIN DECLARE @score decimal(18,2) SELECT @score=Score FROM tbl_SC AS t1 INNER JOIN tbl_Course AS t2 ON t1.CNo=t2.CNo WHERE t...

drop FUNCTION [dbo].[jzf_Get_IDNO] go -- ============================================= -- Author: -- Create date: -- Description: -- ============================================= create FUNCTION [dbo].[jzf_Get_IDNO] ( -- Add th...

用户定义函数的可以使用零个或多个输入参数并返回标量值或表。一个函数最多可以有1024个输入参数。 例如: CREATE FUNCTION CubicVolume -- Input dimensions in centimeters (@CubeLength decimal(4,1), @CubeWidth decimal(4,1), @CubeHeight ...

CREATE FUNCTION func_GetScore( @SNo nvarchar(20), @CourseName nvarchar(50) ) RETURNS decimal(18,2) AS BEGIN DECLARE @score decimal(18,2) SELECT @score=Score FROM tbl_SC AS t1 INNER JOIN tbl_Course AS t2 ON t1.CNo=t2.CNo WHERE t...

--加几个Go就可以了use STmodelgocreate function getnum(@n int)RETURNS intasbegin declare @id int select @id = ID from jiagebianhua where id = @n return @idendgodeclare @i intset @i=1while @i

/* Student(SID,NAME,Company,AGE) ID代表学号,NAME学员姓名,Company所属单位,AGE学员年龄 Course(CID,NAME)ID课程编号,NAME课程名称 Stud_Cour(SID,CID,Score) ID代表学号,ID所选的课程编号,Score学习成绩 */ create function fn_GetCour...

create function fn_test(@a varchar(10), ----待验证字符 @b varchar(10)---单个字符串集合列表)returns varchar(10) asbegindeclare @c varchar(100)set @c = @a+@breturn @cendgoselect dbo.fn_test('test1','test2');go

有两个写法: select * from tblDeptwhere id in(select DeptID from tblSalary group by DeptID having count(case when Salary>3000 then 1 else null end)*1.0/count(*)>0.5) 或 select * from tblDeptwhere id in(select DeptID from tblSal...

SELECT cname 课程名, dbo.count('英语') 选课人数 FROM course WHERE cname = '英语' 试试

系统函数是系统提供的

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