SQL视图的创建

create table Fruit_main
(
  Name varchar(20) primary key not null,
  Code varchar(10) not null,
  Chandi varchar(20),
  Jiage numeric(4,2) 
  )
  
  create table Fruit_two
  (
  FmCode varchar(10) not null,
  FtCode varchar(10) not null,
  ShowMessage varchar(200),  
  )
  select* from Fruit_main,Fruit_two 
  
  insert into Fruit_main values('苹果','Fr001','沂源','1.25')
  insert into Fruit_main values('柠檬','Fr002','不详','1.50')
  
  insert into Fruit_two values('Fr001','Ap001','好吃！')
  insert into Fruit_two values('Fr001','Ap002','好脆！')
  insert into Fruit_two values('Fr002','Nm001','好酸！')
  insert into Fruit_two values('Fr002','Nm002','VC多！')
  
  --新建一个视图 1
  create view Fruit_show
  as
  select Name,Chandi,Jiage,ShowMessage
  from Fruit_main a,Fruit_two b
  where  
  a.Code=b.FmCode and a.Name='苹果'
  
  --2
  create view Fruit_show1 
  as
  select Name,Chandi,Jiage,ShowMessage
  from Fruit_main a,Fruit_two b
  where  
  a.Code=b.FmCode
  
  select * from Fruit_show1
  select * from Fruit_show