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  • mysql控制台常用命令

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    D:seegotmysql5.5.36in> mysql -uroot -proot
    Welcome to the MySQL monitor.  Commands end with ; or g.
    Your MySQL connection id is 309
    Server version: 5.5.36 MySQL Community Server (GPL)
    
    Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.

    查看数据库版本:

    mysql> select version(); 
    +-----------------------+ 
    | version()             | 
    +-----------------------+ 
    | 6.0.4-alpha-community | 
    +-----------------------+ 
    1 row in set (0.02 sec) 

    查看当前时间:

    mysql> select now(); 
    +---------------------+ 
    | now()               | 
    +---------------------+ 
    | 2009-09-15 22:35:32 | 
    +---------------------+ 
    1 row in set (0.04 sec) 

    查看连接数:

    mysql> show status like 'Threads%';
    +-------------------+-------+
    | Variable_name    | Value |
    +-------------------+-------+
    | Threads_cached    | 1    |
    | Threads_connected | 1    |
    | Threads_created  | 2    |
    | Threads_running  | 1    |   ###当前连接数
    +-------------------+-------+
    rows in set (0.00 sec)

    查看最大连接数:

    mysql> show global variables like 'max_conn%';
    +--------------------+-------+
    | Variable_name      | Value |
    +--------------------+-------+
    | max_connect_errors | 10    |
    | max_connections    | 500  |## 最大连接数
    +--------------------+-------+
    rows in set (0.00 sec)

    1.导出整个数据库
    导出文件默认是存在mysqlin目录下
        mysqldump -u 用户名 -p 数据库名 > 导出的文件名
        mysqldump -u user_name -p123456 database_name > outfile_name.sql

    2.导出一个表
        mysqldump -u 用户名 -p 数据库名 表名> 导出的文件名
        mysqldump -u user_name -p database_name table_name > outfile_name.sql

    3.导出一个数据库结构
        mysqldump -u user_name -p -d –add-drop-table database_name > outfile_name.sql
        -d 没有数据 –add-drop-table 在每个create语句之前增加一个drop table

    4.带语言参数导出
        mysqldump -uroot -p –default-character-set=latin1 –set-charset=gbk –skip-opt database_name > outfile_name.sql

    例如,将aaa库备份到文件back_aaa中:
      [root@test1 root]# cd /home/data/mysql
      [root@test1 mysql]# mysqldump -u root -p --opt aaa > back_aaa

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  • 原文地址:https://www.cnblogs.com/pengpengzhang/p/11757089.html
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