DROP USER removes the specified user from the database.
It does not remove tables, views, or other objects owned by the user. If the
user owns any database, an error is raised.
The name of an existing user.
The message returned if the user is successfully deleted.
ERROR: DROP USER: user "name" does not exist
This message occurs if the user name is not found.
DROP USER: user "name" owns database "name", cannot be removed
You must drop the database first or change its ownership.
Use CREATE USER
to add new users, and ALTER USER to change a user's attributes.
PostgreSQL includes a program dropuser that has the
same functionality as this command (in fact, it calls this command)
but can be run from the command shell.
To drop a user account:
DROP USER jonathan;
The DROP USER statement is a
PostgreSQL extension. The SQL standard
leaves the definition of users to the implementation.