2回答

• 

  野生的程序猿一只

  2018-06-29 20:22:37

  -- 注意自己是否需要建库

  -- create database if not exists mysqldv1;

   

  -- 新建 user1 表

  create table if not exists user1 (

    id smallint unsigned primary key auto_increment,

    user_name varchar(40),

    over varchar(40)

  );

  -- 新建 user2 表

  create table if not exists user2 (

    id smallint unsigned primary key auto_increment,

    user_name varchar(40),

    over varchar(40)

  );

  -- 新建 user_kills 表

  create table if not exists user_kills (

    id smallint unsigned primary key auto_increment,

    user_id smallint unsigned,

    timestr timestamp default CURRENT_TIMESTAMP,

    kills smallint unsigned

  );

  -- 插入 user1 表数据

  insert into user1(user_name,over) values ('唐僧', '旃檀功德佛');

  insert into user1(user_name,over) values ('猪八戒', '净坛使者');

  insert into user1(user_name,over) values ('孙悟空', '斗战胜佛');

  insert into user1(user_name,over) values ('沙僧', '金身罗汉');

  -- 插入 user2 表数据

  insert into user2(user_name,over) values ('孙悟空', '成佛');

  insert into user2(user_name,over) values ('牛魔王', '被降服');

  insert into user2(user_name,over) values ('蛟魔王', '被降服');

  insert into user2(user_name,over) values ('鹏魔王', '被降服');

  insert into user2(user_name,over) values ('狮驼王', '被降服');

  -- 插入 user_kills 表数据

  insert into user_kills(user_id, timestr, kills) values (2, timestamp('2013-01-10'), 10);

  insert into user_kills(user_id, timestr, kills) values (2, timestamp('2013-02-01'), 2);

  insert into user_kills(user_id, timestr, kills) values (2, timestamp('2013-02-05'), 12);

  insert into user_kills(user_id, timestr, kills) values (4, timestamp('2013-01-10'), 3);

  insert into user_kills(user_id, timestr, kills) values (4, timestamp('2013-02-11'), 5);

  insert into user_kills(user_id, timestr, kills) values (2, timestamp('2013-02-06'), 1);

  insert into user_kills(user_id, timestr, kills) values (3, timestamp('2013-01-11'), 20);

  insert into user_kills(user_id, timestr, kills) values (2, timestamp('2013-02-12'), 10);

  insert into user_kills(user_id, timestr, kills) values (3, timestamp('2013-02-07'), 17);

  
  

  0 0
• 

  我是方法

  2015-05-29 17:19:44

  create table user1(
  id int(10) not null auto_increment,
  name varchar(48) not null,
  primary key (id)
  )
  create table user2(
  id int(10) not null auto_increment,
  name varchar(48) not null,
  primary key (id)
  )

  0 0