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MYSQL数据库基础命令_MySQL

Jun 01, 2016 pm 02:00 PM
database 数据库基础

 Mysql数据库常用命令:

  启动Mysql数据库

  C:>cd Mysql5.0 bin

  C:Mysql5.0 bin>mysqld –install 安装Mysql服务

  C:Mysql5.0 bin>net start mysql 启动Mysql服务

  请求的服务已经启动。

  连接mysql

  用户须要提供Mysql的用户名和密码来连接服务器,要是服务器不是在本机,则还须要一个主机名或IP来指定服务器的位子。

  C:Mysql5.0 bin>mysql -h localhost -u root -p

  Enter passWord: ****

  Welcome to the MySQL monitor. Commands end with ; or g.

  Your MySQL connection id is 6 to server version: 5.0.18-nt

  Type 'help;' or 'h' for help. Type 'c' to clear the buffer.

  mysql>

  使用一条简单的查询语句

  mysql> select version(),current_date;

  mysql> select version();select now();

  新建或删除一个数据库

  Mysql>create database mydb;

  Mysql> drop database mydb;

  打开的数据库的命令

  mysql> use mysql

  Database changed

  察看数据库的命令

  mysql> show databases;

  查看数据表的详尽结构

  mysql> desc func;

  新建数据库

  mysql> create database school;

  Query OK, 1 row affected (0.00 sec)

  新建表

  mysql> create table user01(

  -> id varchar(20) NOT NULL,

  -> userName varchar(10) NOT NULL,

  -> age int(11) default'0',

  -> sex char(2) NOT NULL default'm',

  -> PRIMARY KEY (id)

  -> )TYPE=InnoDB;

  Query OK, 0 rows affected, 1 warning (0.02 sec)mysql>desc student;

  插入和删除表中的数据

  Create table student(stuName varchar(20),age varchar(20),id varchar(20),set0 char(1));

  插入

  mysql> insert into student(id,stuName) values('1','tomcat');

  Query OK, 1 row affected (0.00 sec)

  删除

  mysql> delete from student where id='1';

  Query OK, 1 row affected (0.01 sec)

  删除表中所有数据

  mysql> truncate table student;

  Query OK, 1 row affected (0.01 sec)


  删除表

  mysql> create table temp(t varchar(1));

  Query OK, 0 rows affected (0.00 sec)

  mysql> drop table temp;

  Query OK, 0 rows affected (0.00 sec)

  创建新用户并给予权限

  mysql> grant all privileges on *.* to dbuser@localhost identified by '1234'

  with grant option;

  更改Mysql用户密码

  c:Mysql5.0 bin>mysqladmin -u root -p password 1234

  Enter password: ****

  备份数据库及表

  我们用mysqldump命令来备份数据库

  c:mysql bin>mysqldump –u root –p 3306 mysql>d: backup.sql

  执行此语句将把mydb 备份到D盘的backup.sql文件中

  备份多个数据库表

  c:mysql bin>mysqldump –u root –p 3306 school user01 user >d: backup.sql

  此句的意思是把school库中的user01表和user表的内容和表的定义备份到D盘backup.sql文件中。

  备份所有的数据库

  c:myql bin>mysqldump –u root –p 3306 –all –database>d:backup.sql

  还原Mysql数据库

  c:mysql bin mysql –u root –p 3306 school

  还原其中的一个表

  mysql> source d:books.sql;

  ERROR:

  Unknown command 'b'.

  Query OK, 0 rows affected (0.00 sec)

  Query OK, 1 row affected (0.00 sec)

  退出Mysql联接

  mysql>quit(exit)

  关闭mysql服务

  C:mysql bin>net mysql

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