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  • MYSQL 部分练习题

    在三个表的基础上:

    create table customer(


      id varchar(10) primary key,
      name varchar(16),
      sex varchar(2),
      mobile varchar(11),
      address varchar(50),


    );

    create table OrderBook(


      csid varchar(10),
      cmid varchar(12),
      count int(11),
      bookdate datetime,
      takedate datetime,
      check(takedate>bookdate),
      check(count>0),
      foreign key(csid) references Customer(id),
      foreign key(cmid) references Commodity(id),
      primary key(csid,cmid)


    );

    create table Commodity(

      ID varchar(12) primary key,
      name varchar(20) not null,
      manufacture varchar(20),
      price decimal(4,2)

    );

    1. 往基本表Customer中插入顾客元组(”0421F901”,”WU”女”,13980011001)

    insert into customer values("0421f901","wu","女",13980011001);

    2. 往基本表Commodity中插入一条商品记录(“03110408591”,“牙膏”,“保洁公司”,5.00

    insert into commodity values("03110408591","牙膏","保洁公司",5.00);

    3. 修改“WANGYAN”顾客定购商品的记录交货日期为2005-12-25

    update Orderbook set takedate='2005-12-25' where csid=(select id from custmoer where name = "WANGYAN");

    4. 把“雀巢奶粉”的定购商品记录全部删去。

    delete count,bookdate,takedate from orderbook where csid=(select id from
    commodity where name="雀巢奶粉");

      

    5. 查询“ANAN”顾客的手机号和住址。

    select mobile,address from customer where name="ANAN";

      

    6. 查询商品的平均价格高于75元钱的厂商名称。

    select MANUFACTURE from Commodity where PRICE in (select avg(PRICE) from Commodity and avg(PRICE)>75);

        

    7. 查询顾客的定购信息,并按订货日期升序排列,若订货日期相同,则按定购数量降序排列。

    select * from orderbook order by bookdate asc,count desc;

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  • 原文地址:https://www.cnblogs.com/fc731655131/p/7857346.html
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