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#Postgresql rename how to

In the above example, we have renamed the database by disconnecting the database with a different database.

The below example shows that we need to change the database connection before renaming the database with a different name.

If we have to change the database name, we need to disconnect from the current database and connect to another database.

In the second example, we have to change the name from db_test user the db_test user doesn’t have privileges to rename the database.

In the above first example, we have to change the name from Postgres user, Postgres user has superuser privileges using superuser privileges, it is possible to change the name of the database.

The example below shows that we need superuser or admin privileges to change the database name in PostgreSQL.Īlter database db_testing rename to db_test Īlter database db_test rename to db_testing.

To rename the database using an alter database statement, we need to have superuser privileges or owner of the database privileges to rename the database.

We have renamed the database using the alter database statement in PostgreSQL as follows.

Below are the various methods which were used in PostgreSQL to rename the database in PostgreSQL.

#Postgresql rename how to

How to Rename a Database in PostgreSQL using various methods? This parameter is also important to alter the database statement to change the database name. New database name –This is defined as the new database name, which we have changed using the alter database command.

We have used rename to keyword with alter database statement in PostgreSQL. Rename To –This keyword is defined as using this keyword, we can change the database name with a different name in PostgreSQL.

Old database name –This is defined as an old database name from the database server, which we have renamed to a different name.We can also use the alter database statement to change the feature of the database. Alter database –We use the alter database statement to rename the database with a different name.Alter database old_database_name (Name of database which was we have change to different name.) RENAME TO new_database_name (New name of database which was we have changing.)īelow is the parameter description syntax of the renamed database In Postgres 9.Hadoop, Data Science, Statistics & othersīelow is the syntax of the renamed database in PostgreSQL. ALTER TABLE example2 RENAME example1fk TO example3fk - rename column But the column name will likely have to change in your example, too. No reference to the referenced table name. However, since you did not specify a constraint name at creation time, the system picked a default, which is example2_example1fk_fkey in your case unless the name was taken. You can ignore that, or you may want to rename the constraint so it's not misleading. The name of the constraint remains unchanged. Changing table names will not impair functionality at all. Internally, every object is stored in a catalog table and the OID (internal primary key) of the object is used for everything else.Īccordingly, a FOREIGN KEY reference is stored in the catalog tables pg_constraint (the constraint itself incl. Internal dependencies between tables and / or other objects are never bound to the object name.