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Mysqldump命令小记--opt_MySQL

Jun 01, 2016 pm 01:31 PM

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Mysqldump命令小记--opt

 

Mysqldump 命令小记 --opt

mysqldump -uroot -p --opt DATABASENAME [Table]  > xxx.sql
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默认Mysqldump导出的SQL文件中不但包含了导出的数据,还包括导出数据库中所有数据表的结构信息。

 

  –opt:此Mysqldump命令参数是可选的,如果带上这个选项代表激活了Mysqldump命令的quick,add-drop-table,add-locks,extended-insert,lock-tables参数,也就是通过–opt参数在使用Mysqldump导出Mysql数据库信息时不需要再附加上述这些参数。

 

  –quick:代表忽略缓冲输出,Mysqldump命令直接将数据导出到指定的SQL文件。

  –add-drop-table:顾名思义,就是在每个CREATE TABEL命令之前增加DROP-TABLE IF EXISTS语句,防止数据表重名。

 

  –add-locks:表示在INSERT数据之前和之后锁定和解锁具体的数据表,你可以打开Mysqldump导出的SQL文件,在INSERT之前会出现LOCK TABLES和UNLOCK TABLES语句。

  –extended-insert (-e):此参数表示可以多行插入。

 

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