--1
create procedure GetStudentsInfo
as
    select * from student
go


exec GetStudentsInfo

alter procedure GetStudentsInfo
as
    select * from student where stuSex = ‘男‘

exec GetStudentsInfo

--2
/*
public DataTable GetStudentsInfoByGrade(decimal mingrade, decimal maxgrade)
{}
*/

create proc GetStudentsInfoByGrade
    
 
@mingrade numeric(3,1) = 60,
    @maxgrade numeric(3,1)
as
    select * from student where stuAvgrade >= @mingrade and stuAvgrade <= @maxgrade
go


--C#調用方法的對比：GetStudentsInfoByGrade(70,90)

exec GetStudentsInfoByGrade @maxgrade = 90
go

exec GetStudentsInfoByGrade 70,90
go

exec GetStudentsInfoByGrade @mingrade
 
 = 80,@maxgrade = 90
go

--3代輸出(out)參數
/*
public void GetStuAvgradeTotalAndFemaleGradeTotal(out decimal stuTotal, out decimal stuFemaleTotal)
*/
--儲存過程有兩種參數類型一種是輸入參數也是默認值input另一種是輸出參數叫output 
create procedure GetStuAvgradeTotalAndFemaleGradeTotal
    @stuTotal real output,
    @stuFemaleTotal real output
 
As
    select @stuTotal = sum(stuAvgrade) from student;
    select @stuFemaleTotal = sum(stuAvgrade) from student
    where stuSex = ‘女‘
go

declare @total real, @femaleTotal real
exec GetStuAvgradeTotalAndFemaleGradeTotal @total output, @femaleTotal output;
select @total, @femaleTotal
go


--4修改和加密儲存過程
alter procedure GetStudentsInfo with encryption
as
    select * from student
go

--5
create proc InsertStudent
    @stuId char(8),
    @stuName varchar(10),
    @stuSex  char(2),
    @stuBirth smalldatetime,
    @stuSpeciality varchar(50),
    @stuAvgrade numeric(3,1),    
    @stuDept  varchar(50) 
as
    insert into student values(@stuId,@stuName,@stuSex,@stuBirth,@stuSpeciality,@stuAvgrade,@stuDept)
go    


exec InsertStudent ‘20060214‘, ‘李剛‘,‘男‘,‘1987-07-01‘,‘網絡工程‘,85.8,‘信息工程系‘   

select * from student

初識存儲過程(代碼)