自定義儲過程

use StuManageDB
go
if exists(Select * from sysobjects where name='usp_ScoreQuery')
drop procedure usp_ScoreQuery
go

create procedure usp_ScoreQuery --建立儲存過程
as
    --查詢考試資訊
    select Students.StudentId,StudentName,ClassName,ScoreSum=(CSharp+SQLServerDB)
    from Students
    inner join StudentClass on
 
 Students.ClassId = StudentClass.ClassId
    inner join ScoreList on Students.StudentId = ScoreList.StudentId
    order by ScoreSum DESC

go
exec usp_ScoreQuery

多張表的儲存過程

use StuManageDB
go
if exists(Select * from sysobjects where name='usp_ScoreQuery')
drop procedure usp_ScoreQuery
go

create
 
 procedure usp_ScoreQuery --建立儲存過程
as
    --查詢考試資訊
    select Students.StudentId,StudentName,ClassName,ScoreSum=(CSharp+SQLServerDB)
    from Students
    inner join StudentClass on Students.ClassId = StudentClass.ClassId
    inner join ScoreList on Students.StudentId = ScoreList.StudentId
    order
 
 by ScoreSum DESC

    --查詢班級平均分
    select ClassName,C#Avg=Avg(CSharp),DBAvg=Avg(SQLServerDB)
    from ScoreList
    inner join Students on Students.StudentId = ScoreList.StudentId
    inner join StudentClass on StudentClass.ClassId = Students.ClassId
    group by ClassName order by ClassName

go
exec usp_ScoreQuery

儲存過程臨時表

在處理資料過程中臨時儲存一些資料。

use StuManageDB
go
if exists(Select * from sysobjects where name='usp_ScoreQuery')
drop procedure usp_ScoreQuery
go

create procedure usp_ScoreQuery --建立儲存過程
as
    --查詢考試資訊
    select Students.StudentId,StudentName,ClassName,ScoreSum=(CSharp+SQLServerDB)
    from Students
    inner join StudentClass on Students.ClassId = StudentClass.ClassId
    inner join ScoreList on Students.StudentId = ScoreList.StudentId
    order by ScoreSum DESC

    --使用臨時表
    select StudentClass.ClassId,c#Avg=Avg(CSharp),DBAvg=Avg(SQLServerDB)
    into #ScoreTemp from ScoreList 
    inner join Students on Students.StudentId=ScoreList.StudentId
    inner join StudentClass on StudentClass.ClassId = Students.ClassId
    group by StudentClass.ClassId order by StudentClass.ClassId
    --將臨時表和班級查詢表關聯
    select ClassName,c#Avg,DBAvg from #ScoreTemp
    inner join StudentClass on StudentClass.ClassId=#ScoreTemp.ClassId
go
exec usp_ScoreQuery