Securely and quickly change the MySQL database name

Securely and quickly change the MySQL database name
GuideMySQL does not seem to have a statement to change the Database Name (maybe I don't know). If you have the permission to manage the database server, you can directly change the directory name, but if you do not have the permission, you can modify the database name by changing the table name. Change the centos database to centos_old.1. Create a database centos_old.

mysql > create database centos_old;

2. Use select concat to construct all rename table statements.

    mysql -uroot -p -e "select concat('rename table centos.',table_name,' to centos_old.',table_name,';') from information_schema.TABLES where TABLE_SCHEMA='centos';" > rename_mysql_name.sql

Open rename_mysql_name. SQL and delete the first line.

Rename_mysql_name. SQL contains the following content:

    rename table centos.wp_commentmeta to centos_old.wp_commentmeta;    rename table centos.wp_comments to centos_old.wp_comments;    rename table centos.wp_forum_forums to centos_old.wp_forum_forums;    rename table centos.wp_forum_groups to centos_old.wp_forum_groups;    rename table centos.wp_forum_posts to centos_old.wp_forum_posts;    rename table centos.wp_forum_threads to centos_old.wp_forum_threads;    rename table centos.wp_forum_usergroup2user to centos_old.wp_forum_usergroup2user;    rename table centos.wp_forum_usergroups to centos_old.wp_forum_usergroups;    rename table centos.wp_links to centos_old.wp_links;    rename table centos.wp_options to centos_old.wp_options;    rename table centos.wp_postmeta to centos_old.wp_postmeta;    rename table centos.wp_posts to centos_old.wp_posts;    rename table centos.wp_term_relationships to centos_old.wp_term_relationships;    rename table centos.wp_term_taxonomy to centos_old.wp_term_taxonomy;    rename table centos.wp_terms to centos_old.wp_terms;    rename table centos.wp_usermeta to centos_old.wp_usermeta;    rename table centos.wp_users to centos_old.wp_users;

3. Execute the rename statement

mysql -uroot -p < rename_mysql_name.sql

In this way, the centos database name is changed to centos_old.

Address: https://www.centos.bz/2013/09/quick-and-secure-modify-mysql-name/

Address: http://www.linuxprobe.com/linux-mysql.html