dropdb
Removes a database.
Synopsis
dropdb [<connection-option> ...] [-e] [-i] <dbname>
dropdb -? | --help
dropdb -V | --version
Description
dropdb destroys an existing database. The user who runs this command must be a superuser or the owner of the database being dropped.
dropdb is a wrapper around the SQL command DROP DATABASE.
Options
dbname
The name of the database to be removed.
-e | --echo
Echo the commands that dropdb generates and sends to the server.
-i | --interactive
Issues a verification prompt before doing anything destructive.
-V | --version
Print the dropdb version and exit.
--if-exists
Do not throw an error if the database does not exist. A notice is issued in this case.
-? | --help
Show help about dropdb command line arguments, and exit.
Connection options
-h host | --host=host
The host name of the machine on which the Cloudberry coordinator database server is running. If not specified, reads from the environment variable PGHOST or defaults to localhost.
-p port | --port=port
The TCP port on which the Cloudberry coordinator database server is listening for connections. If not specified, reads from the environment variable PGPORT or defaults to 5432.
-U username | --username=username
The database role name to connect as. If not specified, reads from the environment variable PGUSER or defaults to the current system role name.
-w | --no-password
Never issue a password prompt. If the server requires password authentication and a password is not available by other means such as a .pgpass file, the connection attempt will fail. This option can be useful in batch jobs and scripts where no user is present to enter a password.
-W | --password
Force a password prompt.
--maintenance-db=dbname
Specifies the name of the database to connect to in order to drop the target database. If not specified, the postgres database will be used; if that does not exist (or if it is the name of the database being dropped), template1 will be used.
Examples
To destroy the database named demo using default connection parameters:
dropdb demo
To destroy the database named demo using connection options, with verification, and a peek at the underlying command:
dropdb -p 54321 -h coordinatorhost -i -e demo
Database "demo" will be permanently deleted.
Are you sure? (y/n) y
DROP DATABASE "demo"
DROP DATABASE
