0904 存储过程、触发器、事务、视图、生成脚本

create database lianxi0904
go
use lianxi0904
go

create table gong
(
  gcode int primary key identity(1001,1),
  gname varchar(20),
  gtel int
)
go
insert into gong values('可口可乐公司',1234567)
insert into gong values('日用品公司',1234567)
insert into gong values('名鞋公司',1234567)
insert into gong values('文具公司',1234567)
go

create table cang
(
  ccode int primary key identity(10001,1),
  cname varchar(20),
  cshu int,
  cprice decimal(18,2),
  cg int
)
go

insert into cang values('可口可乐',4,5,1001)
insert into cang values('牙刷',5,5.5,1002)
insert into cang values('阿迪',2,225,1003)
insert into cang values('毛笔',15,5,1004)
      
insert into cang values('芬达',15,4.5,1001)
insert into cang values('牙膏',3,9.5,1002)
insert into cang values('耐克',2,995,1003)
insert into cang values('钢笔',12,10.5,1004)
      
insert into cang values('雪碧',4,3.5,1001)
insert into cang values('杯子',6,10,1002)
insert into cang values('乔丹',3,345,1003)
insert into cang values('铅笔',12,2,1004)
      
insert into cang values('可乐',22,5,1001)
insert into cang values('洗衣粉',12,8,1002)
insert into cang values('鸿星尔克',2,145,1003)
insert into cang values('中性笔',6,2,1004)
go
      

create table piao
(
  pcode int primary key identity(1000001,1),
  pname varchar(20),
  pshu int,
  pprice decimal(18,2),
  pzong decimal(18,2),
  pc int
)
go

create proc cun
@a varchar(20),
@b int
as
begin
update cang set cshu=cshu+@b where cname=@a
end
go
exec cun '可口可乐',1
select cshu from cang where cname='可口可乐'

create proc chu
@c int,
@e varchar(20)
as
declare @d int
select @d=cshu from cang where cname=@e
declare @f decimal(18,2)
select @f=cprice from cang where cname=@e
declare @g decimal(18,2)
set @g=@f*@c
declare @h int
select @h=ccode from cang where cname=@e
begin
if @c<=@d
 begin
 update cang set cshu=cshu-@c
 insert into piao values(@e,@c,@f,@g,@h)
 select *from piao
 end
else
print '您需要进货'+cast((@c-@d) as varchar(20))+'个'+@e
end
go
exec chu 10,'芬达'