sql存储过程简单例题_sql存储过程实例详解

create proc P1

as

select Student.StudentID,StudentName,count(CourseID)选修门数 from Student join Grade

on Grade.StudentID=Student.StudentID

group by Student.StudentID,StudentName

go

create proc P2

@departmentname varchar(20)

as

select Student.StudentID,StudentName,CourseName,Grade from Student join Grade

on Grade.StudentID=Student.StudentID join Course

on Course.CourseID=Grade.CourseID join Class

on Class.ClassID=Student.ClassID join Department

on Department.DepartmentID=Class.DepartmentID

where DepartmentName=@departmentname

go

create proc P3

@departmentname varchar(20),

@num int output

as

select @num=count(StudentID) from Student join Class

on Class.ClassID=Student.ClassID join Department

on Department.DepartmentID=Class.DepartmentID

where DepartmentName=@departmentname and Sex='男'

go

create proc P4

@sid char(12)

as

 delete  from  Grade where  StudentID=@sid

go

create proccP5

@tid char(8),

@sex char(2) output

as

select @sex=Sex from Teacher where TeacherID=@tid

create proc P6

@cname varchar(20),

@gnum int output

as

select @gnum=count(StudentID)from Student join Class

on Class.ClassID=Student.ClassID

where ClassName=@cname and Sex='女'

go

create proc P7

@cname varchar(20),

@avg int output

as

select @avg=avg(Grade) from Grade join Student

on Student.StudentID=Grade.StudentID join Class

on Class.ClassID=Student.ClassID

where ClassName=@cname

go

create proc P8

@tname char(12),

@profession char(8) output

as

select @profession=Profession from Teacher where Teachername=@tname

create proc P9

@sid char(12),

@cid char(8),

@grade numeric(5,2) output

as

select @grade=Grade from Grade where CourseID=@cid and StudentID=@sid

go