How do I change the database name using MySQL?

2020-06-30 12:16发布

问题:

How can I change the database name of my database?

I tried to use the rename database command, but on the documents about it it is said that it is dangerous to use. Then what should I need to do to rename my database name?

For example, if I want to rename my database to this.

database1 -> database2?

回答1:

I don't think it's possible.

You can use mysqldump to dump the data and then create a schema with your new name and then dump the data into that new database.



回答2:

Follow bellow steps:

shell> mysqldump -hlocalhost -uroot -p  database1  > dump.sql

mysql> CREATE DATABASE database2;

shell> mysql -hlocalhost -uroot -p database2 < dump.sql

If you want to drop database1 otherwise leave it.

mysql> DROP DATABASE database1;

Note : shell> denote command prompt and mysql> denote mysql prompt.



回答3:

Unfortunately, MySQL does not explicitly support that (except for dumping and reloading database again).

From http://dev.mysql.com/doc/refman/5.1/en/rename-database.html:

13.1.32. RENAME DATABASE Syntax

RENAME {DATABASE | SCHEMA} db_name TO new_db_name;

This statement was added in MySQL 5.1.7 but was found to be dangerous and was removed in MySQL 5.1.23. ... Use of this statement could result in loss of database contents, which is why it was removed. Do not use RENAME DATABASE in earlier versions in which it is present.



回答4:

You can change the database name using MySQL interface.

Go to http://www.hostname.com/phpmyadmin

Go to database which you want to rename. Next, go to the operation tab. There you will find the input field to rename the database.



回答5:

"As long as two databases are on the same file system, you can use RENAME TABLE to move a table from one database to another"

-- ensure the char set and collate match the existing database.
SHOW VARIABLES LIKE 'character_set_database';
SHOW VARIABLES LIKE 'collation_database';


CREATE DATABASE `database2` DEFAULT CHARACTER SET = `utf8` DEFAULT COLLATE = `utf8_general_ci`;
RENAME TABLE `database1`.`table1` TO `database2`.`table1`;
RENAME TABLE `database1`.`table2` TO `database2`.`table2`;
RENAME TABLE `database1`.`table3` TO `database2`.`table3`;

http://dev.mysql.com/doc/refman/5.7/en/rename-table.html



回答6:

After much aggravation this is what I have found to work"simply". First thing, I am using MYSQL Workbench and the import would not work as it should, as the import dump file would always revert to the original schema name. I spent several hours trying every thing to no avail,all for a spelling error. I solved the issue by opening one of the .sql dump files in notebook and hand editing the typo's of the schema name, take care to rename all instances schema name has three in the beginning, save the file and then import. this worked perfectly for me and hope that it will help others looking for the simple answer to changing database names/schema names. One more tip that I have found true, when programs do not do as they should go to the "source" literally find the source code. Hope this helps someone

Low rep so they wont let me comment on the prior/post answer(it keeps changing rank or position), so I added it here. reverse engineering will work fine as long as there is no data in the sever table. if data exists and you try to update the server after the name change it will either pull an error or just create a new database/schema with no data, I know I tried ten times to no avail. The above works simply and avoids headaches, as one can review the SQL code for other errors if any or change table names or creation data. the .sql file is just a compiled SQL code so in theory one could copy and add it through PHP or the script console of the database management tool.



回答7:

I agree with above answers and tips but there is a way to change database name with phpmyadmin

Renaming the Database From cPanel, click on phpMyAdmin. (It should open in a new tab.) Click on the database you wish to rename in the left hand column. Click on the Operations tab. Where it says "Rename database to:" enter the new database name. Click the Go button. When it asks you to want to create the new database and drop the old database, click OK to proceed. (This is a good time to make sure you spelled the new name correctly.) Once the operation is complete, click OK when asked if you want to reload the database.

here's the video tutorial:

http://support.hostgator.com/articles/specialized-help/technical/phpmyadmin/how-to-rename-a-database-in-phpmyadmin



回答8:

Another way to rename the database or taking an image of the database is by using the reverse engineering option in the database tab. It will create an ER diagram for the database. Rename the schema there.

After that, go to the File menu and go to export and forward engineer the database.

Then you can import the database.



回答9:

You can use below command

alter database Testing modify name=LearningSQL;

Old Database Name = Testing, New Database Name = LearningSQL



回答10:

InnoDB supports RENAME TABLE statement to move table from one database to another. To use it programmatically and rename database with large number of tables, I wrote a couple of procedures to get the job done. You can check it out here - SQL script @Gist

To use it simply call the renameDatabase procedure.

CALL renameDatabase('old_name', 'new_name');

Tested on MariaDB and should work ideally on all RDBMS using InnoDB transactional engine.



回答11:

Try:

RENAME database1 TO database2;


回答12:

Go to data directory and try this:

mv database1 database2 

It works for me on a 900 MB database size.



标签: mysql