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  • MySQL经常使用命令--create命令使用

    • 切换数据库的字符集
    在mysql中的配置文件里:
    使用vim /etc/mysql/my.cnf
    [client]
    default-character-set = utf8
    [mysqld]
    character-set-server = utf8
    这当中的mysql的版本号是mysql 5.6系列的
    • create 数据库
    create database db_test;
    create database if not exists db_test;
    drop databases if exists db_test;
    • create 表
    create table if not exists t_user(
        uid varchar(50) not null,
        account_kind enum("stock","future"),
    
        stock_cash varchar(30),
        stock_sh varchar(30),
        stock_sz varchar(30),
        stock_pwd varchar(50),
    
        future_BrokerID varchar(30),
        future_InvestorID varchar(30),
        future_pwd varchar(50),
    
        unique key(stock_cash,stock_sh,stock_sz,stock_pwd),
        unique key(future_BrokerID,future_InvestorID,future_pwd),
        primary key(uid),
        index STOCKINFO(stock_cash,stock_sh,stock_sz,stock_pwd)
    
    )ENGINE=MyISAM DEFAULT CHARSET=utf8;

    you can also use this to create index

    create table t_TEST(
    id int not null, 
    name varchar(10)
    );
    create index IDX_TEST_Name on t_TEST(name);

    将从一个已经存储好的表中创建一个新的表

    mysql> select * from t_subscribe;
    +------+-------------+---------------------+
    | uid  | strategy_id | date                |
    +------+-------------+---------------------+
    | 1233 | 123414      | 2015-06-11 10:19:52 |
    | 0    | 0           | 2015-06-11 10:19:52 |
    | 1    | 1           | 2015-06-11 10:19:52 |
    | 2    | 2           | 2015-06-11 10:19:52 |
    | 3    | 3           | 2015-06-11 10:19:52 |
    | 4    | 4           | 2015-06-11 10:19:52 |
    | 5    | 5           | 2015-06-11 10:19:52 |
    | 6    | 6           | 2015-06-11 10:19:52 |
    | 7    | 7           | 2015-06-11 10:19:52 |
    | 8    | 8           | 2015-06-11 10:19:52 |
    | 9    | 9           | 2015-06-11 10:19:52 |
    +------+-------------+---------------------+
    11 rows in set (0.00 sec)
    
    mysql> create table test select * from t_subscribe;
    Query OK, 11 rows affected (0.03 sec)
    Records: 11  Duplicates: 0  Warnings: 0
    
    mysql> select * from test;
    +------+-------------+---------------------+
    | uid  | strategy_id | date                |
    +------+-------------+---------------------+
    | 1233 | 123414      | 2015-06-11 10:19:52 |
    | 0    | 0           | 2015-06-11 10:19:52 |
    | 1    | 1           | 2015-06-11 10:19:52 |
    | 2    | 2           | 2015-06-11 10:19:52 |
    | 3    | 3           | 2015-06-11 10:19:52 |
    | 4    | 4           | 2015-06-11 10:19:52 |
    | 5    | 5           | 2015-06-11 10:19:52 |
    | 6    | 6           | 2015-06-11 10:19:52 |
    | 7    | 7           | 2015-06-11 10:19:52 |
    | 8    | 8           | 2015-06-11 10:19:52 |
    | 9    | 9           | 2015-06-11 10:19:52 |
    +------+-------------+---------------------+
    
    mysql> insert into test select * from t_subscribe;
    Query OK, 11 rows affected (0.00 sec)
    Records: 11  Duplicates: 0  Warnings: 0
    
    mysql> select * from test;
    +------+-------------+---------------------+
    | uid  | strategy_id | date                |
    +------+-------------+---------------------+
    | 1233 | 123414      | 2015-06-11 10:19:52 |
    | 0    | 0           | 2015-06-11 10:19:52 |
    | 1    | 1           | 2015-06-11 10:19:52 |
    | 2    | 2           | 2015-06-11 10:19:52 |
    | 3    | 3           | 2015-06-11 10:19:52 |
    | 4    | 4           | 2015-06-11 10:19:52 |
    | 5    | 5           | 2015-06-11 10:19:52 |
    | 6    | 6           | 2015-06-11 10:19:52 |
    | 7    | 7           | 2015-06-11 10:19:52 |
    | 8    | 8           | 2015-06-11 10:19:52 |
    | 9    | 9           | 2015-06-11 10:19:52 |
    | 1233 | 123414      | 2015-06-11 10:19:52 |
    | 0    | 0           | 2015-06-11 10:19:52 |
    | 1    | 1           | 2015-06-11 10:19:52 |
    | 2    | 2           | 2015-06-11 10:19:52 |
    | 3    | 3           | 2015-06-11 10:19:52 |
    | 4    | 4           | 2015-06-11 10:19:52 |
    | 5    | 5           | 2015-06-11 10:19:52 |
    | 6    | 6           | 2015-06-11 10:19:52 |
    | 7    | 7           | 2015-06-11 10:19:52 |
    | 8    | 8           | 2015-06-11 10:19:52 |
    | 9    | 9           | 2015-06-11 10:19:52 |
    +------+-------------+---------------------+
    22 rows in set (0.00 sec)
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  • 原文地址:https://www.cnblogs.com/gccbuaa/p/7246712.html
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