dropuser(1) - phpMan
DROPUSER(1) PostgreSQL 12.3 Documentation DROPUSER(1)
dropuser - remove a PostgreSQL user account
dropuser [connection-option...] [option...] [username]
dropuser removes an existing PostgreSQL user. Only superusers and users with the
CREATEROLE privilege can remove PostgreSQL users. (To remove a superuser, you must
yourself be a superuser.)
dropuser is a wrapper around the SQL command DROP ROLE (DROP_ROLE(7)). There is no
effective difference between dropping users via this utility and via other methods for
accessing the server.
dropuser accepts the following command-line arguments:
Specifies the name of the PostgreSQL user to be removed. You will be prompted for a
name if none is specified on the command line and the -i/--interactive option is used.
Echo the commands that dropuser generates and sends to the server.
Prompt for confirmation before actually removing the user, and prompt for the user
name if none is specified on the command line.
Print the dropuser version and exit.
Do not throw an error if the user does not exist. A notice is issued in this case.
Show help about dropuser command line arguments, and exit.
dropuser also accepts the following command-line arguments for connection parameters:
Specifies the host name of the machine on which the server is running. If the value
begins with a slash, it is used as the directory for the Unix domain socket.
Specifies the TCP port or local Unix domain socket file extension on which the server
is listening for connections.
User name to connect as (not the user name to drop).
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.
Force dropuser to prompt for a password before connecting to a database.
This option is never essential, since dropuser will automatically prompt for a
password if the server demands password authentication. However, dropuser will waste a
connection attempt finding out that the server wants a password. In some cases it is
worth typing -W to avoid the extra connection attempt.
Default connection parameters
Specifies whether to use color in diagnostic messages. Possible values are always,
auto and never.
This utility, like most other PostgreSQL utilities, also uses the environment variables
supported by libpq (see Section 33.14).
In case of difficulty, see DROP ROLE (DROP_ROLE(7)) and psql(1) for discussions of
potential problems and error messages. The database server must be running at the targeted
host. Also, any default connection settings and environment variables used by the libpq
front-end library will apply.
To remove user joe from the default database server:
$ dropuser joe
To remove user joe using the server on host eden, port 5000, with verification and a peek
at the underlying command:
$ dropuser -p 5000 -h eden -i -e joe
Role "joe" will be permanently removed.
Are you sure? (y/n) y
DROP ROLE joe;
createuser(1), DROP ROLE (DROP_ROLE(7))
PostgreSQL 12.3 2020 DROPUSER(1)