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<>Mysql 命令行方式导入与导出sql脚本语句
windows 环境下，导入与导出通常使用数据库可视化工具（Navicat）执行，命令行方式常用在Linux系统的服务器中执行，这里以ubuntu为例
<>导入
*
登录数据库后执行导入
通过 source 命令执行导入 source sql文件路径，如果这个sql文件不是在当前目录的话需要使用绝对地址
用户目录下存在SQL文件user_innodb.sql
登录 mysql，选择对应数据库，执行 source 命令
source usesr_innodb.sql
*
不登录数据库导入
mysql -u 用户名 -p 密码 -D 数据库 < sql脚本文件路径名
注意事项
* 如果在sql脚本文件中使用了 use <database> 则 -D 数据库 可以不同添加
* 如果sql没有创建数据库的语句，而且MySQL 也不存在数据库，那么必须先用命令创建一个新的数据库
切换当前路径与sql 文件不在同一个目录，执行 mysql -uroot -D mysql_test < ../user_innodb1.sql
<>导出
mysqldump -u 你的用户名 -p 你的数据库名 >导出的文件名 ## 若导出数据库中的单张表，则在数据库后添加表名
用户目录下执行 mysqldump -uroot mysql_test user_innodb > user_innodb2.sql
