Five ways to rename a MySQL database

Five ways to change MySQL database name:

1. RENAME DATABASE db_name to New_db_name

This one.. This syntax is added to the MySQL 5.1.7, 5.1.23 and removed. It is said that it is possible to lose data. It's better not to use it. See: http://dev.mysql.com/doc/refman/5.1/en/rename-database.html

2. If all tables are MyISAM type, you can change the name of the folder

Close Mysqld

Rename the Db_name directory in the data directory to New_db_name

Open mysqld

3. Rename all Tables

CREATE DATABASE New_db_name;

RENAME TABLE Db_name.table1 to New_db_name.table1,

Db_name.table2 to New_db_name.table2;

DROP DATABASE db_name;

4. Mysqldump Export Data and import

mysqldump-uxxxx-pxxxx-h xxxx db_name > Db_name_dump. Sql

Mysql-uxxxx-pxxxx-h xxxx-e "CREATE DATABASE new_db_name"

mysql-uxxxx-pxxxx-h xxxx New_db_name < Db_name_dump. Sql

Mysql-uxxxx-pxxxx-h xxxx-e "DROP DATABASE db_name"

5. Rename all tables using the shell script

#!/bin/bash

mysqlconn= "Mysql-u xxxx-pxxxx-s/var/lib/mysql/mysql.sock-h localhost"

olddb= "Db_name"

newdb= "New_db_name"

# $mysqlconn-E "CREATE DATABASE $newdb"

params=$ ($mysqlconn-N-E "SELECT table_name from INFORMATION_SCHEMA. TABLES WHERE table_schema= ' $olddb ')

for name in $params; Todo

$mysqlconn-E "RENAME TABLE $olddb. $name to $newdb. $name";

Done

# $mysqlconn-E "DROP DATABASE $olddb"

is the optimized version of Method 3.