如何快速重命名MySQL数据库（更改模式名称）？ [英] How do I quickly rename a MySQL database (change schema name)?

问题描述

MySQL 中的MySQL手册涵盖了这一点。

The MySQL manual at MySQL covers this.

通常我只是转储数据库并重新导入一个新的名称。这对于非常大的数据库不是一个选项。显然 RENAME {DATABASE | SCHEMA} db_name TO new_db_name; 坏了

Usually I just dump the database and reimport it with a new name. This is not an option for very big databases. Apparently RENAME {DATABASE | SCHEMA} db_name TO new_db_name; does bad things, exist only in a handful of versions, and is a bad idea overall.

这需要使用 InnoDB ，它存储的东西非常不同于 MyISAM 。

This needs to work with InnoDB, which stores things very differently than MyISAM.

推荐答案

对于InnoDB，以下似乎工作：创建新的空数据库，重命名每个表到新数据库：

For InnoDB, the following seems to work: create the new empty database, then rename each table in turn into the new database:

RENAME TABLE old_db.table TO new_db.table;

之后您需要调整权限。

对于shell中的脚本，您可以使用以下任一方法：

For scripting in a shell, you can use either of the following:

mysql -u username -ppassword old_db -sNe 'show tables' | while read table; \ 
    do mysql -u username -ppassword -sNe "rename table old_db.$table to new_db.$table"; done

或

for table in `mysql -u root -ppassword -s -N -e "use old_db;show tables from old_db;"`; do mysql -u root -ppassword -s -N -e "use old_db;rename table old_db.$table to new_db.$table;"; done;

注意：选项 -p 和密码。如果您的数据库没有密码，请删除 -u username -ppassword 部分。

Notes: there is no space between the option -p and the password. If your database has no password, remove the -u username -ppassword part.

程序，您可以复制它们之后：

Also, if you have stored procedures, you can copy them afterwards:

mysqldump -R old_db | mysql new_db

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