Sql Server数据库之存储过程

--创建无参数的存储过程
create procedure GetStuCou
as
begin
select * from student s
left join class c on s.classId = c.classId
end
execute GetStuCou

1 --创建名为GetStuCou_Re的有返回值的存储过程
2 create procedure GetStuCou_Re
3 as
4 begin 
5     insert into student values(8,‘栾云平‘,3);
6     return scope_identity();
7 end
8 execute GetStuCou_Re

 1 --创建名为GetStuCou_In的有输入参数的存储过程
 2 create procedure GetStuCou_In
 3 @StuNo nvarchar(64) = ‘001‘ --设置默认值
 4 as
 5 begin
 6     select * from student where studentId = @StuNo
 7 end
 8 --执行名为GetStuCou_In的有输入参数的存储过程(不传参数,即使用默认值)
 9 execute GetStuCou_In
10 --执行名为GetStuCou_In的有输入参数的存储过程(传入参数)
11 execute GetStuCou_In ‘005‘

 1 --创建名为GetStuCou_Out的有输入参数和输出参数的存储过程
 2 create procedure GetStuCou_Out
 3 @StuNo nvarchar(64),
 4 @Name nvarchar(64) output
 5 as
 6 begin
 7     if(@StuNo is not null and @StuNo <> ‘‘)
 8     begin 
 9         select @Name = studentName
10         from student
11         where studentId = @StuNo
12     end
13     else
14     begin
15         set @Name=‘0‘
16     end
17     print @Name
18 end
19 --执行名为GetStuCou_Out的有输入参数和输出参数的存储过程
20 execute GetStuCou_Out ‘005‘,null