MySql基础操作

1. 创建表
CREATE TABLE test1(
    id int primary key
);
字段类型:
    整数:tinyint, smallint, mediumint, int, bigint
    浮点:float, double
    字符:char(), varchar(), text
    时间:date, time, datetime
字段属性:
    primary key
    unique key
    auto_increment
    not null
    default
    comment ''

2. 各种操作
数据定义DDL(对数据库的结构,名称等的操作):
    CREATE, DROP, ALTER
    CREATE TABLE test(列名 数据类型 属性,);
    ALTER TABLE test RENAME TO test1
    ALTER TABLE test ADD id 数据类型
    ALTER TABLE test CHANGE id uid 数据类型
    ALTER TABLE test DROP COLUMN uid
数据操作DML:
    INSERT, UPDATE, DELETE
    INSERT INTO test(name, id) VALUES ('deng', 1)
    UPDATE test SET name='denghua' WHERE id=1
    DELETE FROM test WHERE id=1

数据查询:
    SELECT,
    SELECT DISTINCT id FORM test
    SELECT * FORM test ORDER BY id asc 升序 desc 降序
    
事务控制:
    COMMIT, ROLLBACK, GRANT, REVOKE

 

posted @ 2016-06-14 09:02  ohmydenzi  阅读(144)  评论(0编辑  收藏  举报