Mysql数据库备份和还原常用的命令

Mysql数据库备份和还原常用的命令是进行Mysql数据库备份和还原的关键，没有命令，什么都无从做起，更谈不上什么备份还原，只有给系统这个命令，让它去执行，才能完成Mysql数据库备份和还原的操作，下面为大家分享一下操作的常用的命令。

一、备份命令

1、备份MySQL数据库的命令

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-->　　mysqldump-hhostname-uusername-ppassword databasename>backupfile.sql

2、备份MySQL数据库为带删除表的格式

备份MySQL数据库为带删除表的格式，能够让该备份覆盖已有数据库而不需要手动删除原有数据库。

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-->　　mysqldump-–add-drop-table-uusername-ppassword databasename>backupfile.sql

3、直接将MySQL数据库压缩备份

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-->　　mysqldump-hhostname-uusername-ppassword databasename|gzip>backupfile.sql.gz

4、备份MySQL数据库某个(些)表

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-->　　mysqldump-hhostname-uusername-ppassword databasename specific_table1 specific_table2>backupfile.sql

5、同时备份多个MySQL数据库

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-->　　mysqldump-hhostname-uusername-ppassword –databases databasename1 databasename2 databasename3>multibackupfile.sql

6、仅仅备份数据库结构

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-->　　mysqldump –no-data –databases databasename1 databasename2 databasename3>structurebackupfile.sql

7、备份服务器上所有数据库

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-->　　mysqldump –all-databases>allbackupfile.sql

二、还原命令

1、还原MySQL数据库的命令

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-->　　mysql-hhostname-uusername-ppassword databasename<backupfile.sql

2、还原压缩的MySQL数据库

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-->　　gunzip<backupfile.sql.gz|mysql-uusername-ppassword databasename

3、将数据库转移到新服务器

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-->　　mysqldump-uusername-ppassword databasename|mysql –host=*.*.*.*-C databasename