oracle数据库的关于建表的sql语句练习

创建用户表shop_user

create table shop_user(
User_name varchar2(20) primary key,
Password varchar2(20) not null,
Name varchar2(20) not null,
zip number(6) check(length(zip)=6),
address varchar2(50)
)

commit

select * from shop_user

insert into shop_user
values(
‘Luxw’,
‘123456’,
‘Luxiaowei’,
100000,
‘西二旗’
)
select * from shop_user

创建商品表 shop_product

create table shop_product(

 product_id number(7) primary key,
 
 product_name varchar2(20) not null,
 
 price    number  not null ,
 
 picture_path varchar2(30),

 discription  varchar2(50)  
 
 )

insert into shop_product

    values (
      
       60001,
       
       'Ipad3',
       
       3500,
       
       'D:/picture/a.gif',
       
       'aaaaa'
       
       )

commit

select * from shop_product

创建订单表 shop_order

create table shop_order(

 order_id number(7) primary key,
 
 ordertime date  not null,
 
 totalprice number  not null,     

  username varchar2(20) 
  references shop_user(user_name)
 
  )

insert into shop_order

  values (
         
        10001,
       
   to_date('05-06-1998','dd-MM-yyyy'),
  
        5000,
        
        'Luxw'
        
       )

commit

select * from shop_order

创建订单项表 shop_orderitem

create table shop_orderitem(

orderitem_id number(7) primary key,

order_id number(7) references shop_order(order_id) not null,

product_id number(7) references shop_product(product_id) not null,

count number(3)

)

insert into shop_orderitem

commit

select * from shop_orderitem

          二、DML练习

1、给商品表 shop_product创建序列，从60001开始。

create sequence shop_seq start with 60001

commit

drop sequence shop_seq

select shop_seq.nextval from dual

2、使用序列往商品表中，插入4条数据：

insert into shop_product

   values (
     
       shop_seq.nextval,
       
       'Ipad2',
       
       2200,
       
       'D/picture/b.gif',
       
       'Pad2'
       
       )

insert into shop_product

   values (
   
        shop_seq.nextval,
        
        'Ipad4',
        
        5500,
        
        'D/picture/c.gif',
        
        'Pad4'
        
       )

insert into shop_product

   values (
   
   shop_seq.nextval,
   
   'dell',
   
   6500,
   
   'D:/picture/d.gif',
   
   'Pad5'
   
   )

commit

select * from shop_product

3、修改第3数据，名称改为IpadMini，价格2800。

update shop_product set product_name=‘IpadMini’ where product_id = 60003

commit

4、删除所有的pad商品。

create index shop_name on shop_product(product_name)

delete from shop_product where product_name like ‘%pad%’

delete from shop_product
commit

select * from shop_product

5、根据给的测试数据，给订单表 shop_order创建序列，并插入如下数据：

create sequence shop_ord start with 10001

commit

insert into shop_order

  values (
  
     shop_ord.nextval,
     
     to_date('1988-08-10','yyyy-MM-dd'),
     
     8000,
     
     'huxz'
     
     )

oracle数据库的关于建表的sql语句练习

oracle数据库的关于建表的sql语句练习

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