MYSQL数据库基础命令_MySQL
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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