dropdb destroys an existing PostgreSQL database. The user who executes this command must be a database superuser or the owner of the database.
dropdb is a shell script wrapper around the SQL command DROP DATABASE via the PostgreSQL interactive terminal psql. Thus, there is nothing special about dropping databases via this or other methods. This means that the psql must be found by the script and that a database server is running at the targeted host. Also, any default settings and environment variables available to psql and the libpq front-end library do apply.
dropdb accepts the following command-line arguments:
Specifies the name of the database to be removed. The database must be one of the existing PostgreSQL databases in this installation.
-e--echoEcho the queries that dropdb generates and sends to the server.
-i--interactiveIssues a verification prompt before doing anything destructive.
-q--quietDo not display a response.
createdb also accepts the following command-line arguments for connection parameters:
-h host--host hostSpecifies the host name of the machine on which the server is running. If host begins with a slash, it is used as the directory for the Unix domain socket.
-p port--port portSpecifies the Internet TCP/IP port or local Unix domain socket file extension on which the server is listening for connections.
-U username--username usernameUser name to connect as
-W--passwordForce password prompt.
The database was successfully removed.
Something didn't work out.
If there is an error condition, the backend error message will be displayed. See DROP DATABASE and psql for possibilities.
To destroy the database demo on the default database server:
$ dropdb demo DROP DATABASE
To destroy the database demo using the server on host eden, port 5000, with verification and a peek at the underlying query:
$ dropdb -p 5000 -h eden -i -e demo Database "demo" will be permanently deleted. Are you sure? (y/n) y DROP DATABASE "demo" DROP DATABASE