1、为什么要使用存储过程 ？
过滤SQL语句中的非法字符，执行存储过程比SQL语句快。
2、存储过程能做什么
利用存储过程插入数据、修改数据、删除数据
3、实例
//所需数据
//在SQL Sever数据库中创建表
create table tb_stu
(
stuNo int primary key,
stuName varchar(10) not null,
stuSex varchar(2) null,
stuAge int not null
)
insert into tb_stu values(1,'小张','男',18)
insert into tb_stu values(2,'小丽','女',17)
insert into tb_stu values(3,'小明','男',18)
/*利用存储过程插入数据*/
/*@stuNo,@stuName,@stuSex,@stuAge与数据表对应所需的参数*/
create proc proc_InsertInfo
(
@stuNo int,
@stuName varchar(10),
@stuSex varchar(2),
@stuAge int
)
as
if exists(select*from tb_stu where stuNO=@stuNo)
return 0
else
begin
insert into tb_stu(stuNo,stuName,stuSex,stuAge)
values(@stuNo,@stuName,@stuSex,@stuAge)
return 1
end
go
/*调用存储过程*/
execute proc_InsertInfo @stuNo=6,@stuName='子',@stuSex='男',@stuAge=18
/*利用存储过程更改数据*/
create proc proc_updateInfo
(
@stuNo int,
@stuName varchar(10),
@stuSex varchar(2),
@stuAge int
)
as
if(@stuNo<>'')
update tb_stu set stuName=@stuName, stuSex=@stuSex,stuAge=@stuAge where stuNo=@stuNo
go
/*调用*/
execute proc_updateInfo @stuNo=1,@stuName='小李',@stuSex='女',@stuAge=17
/*利用存储过程删除数据*/
create proc proc_deleteInfo
(
@stuNo int
)
as
if(@stuNo<>'')
delete from tb_stu where stuNo=@stuNO go
/*调用*/
execute proc_deleteInfo @stuNo=6
/*更改存储过程名称*/
exec sp_rename 'proc_deleteInfo','proc_deleteStuInfo'
/*调用*/
execute proc_deleteStuInfo @stuNo=3
/*更改存储过程*/
alter proc proc_updateInfo
(
@stuNo int,
@stuName varchar(10),
/*@stuSex varchar(2),*/
@stuAge int ) as
if(@stuNo<>'')
update tb_stu set stuName=@stuName,stuAge=@stuAge where stuNo=@stuNo
go
/*调用*/
execute proc_updateInfo @stuNo=2,@stuName='小高',@stuAge=18
/*如何查看当前数据库未知存储过程名称*/
select name from sysobjects where xtype = 'P'