droplang
Synopsis
droplang [connection-option...] langname [dbname]
droplang [connection-option...] --list | -l [dbname]
Description
droplang is a utility for removing an existing procedural language from a PostgreSQL database.
droplang is just a wrapper around the DROP EXTENSION SQL command.
| Caution |
droplang is deprecated and may be removed in a future PostgreSQL release. Direct use of the DROP EXTENSION command is recommended instead. |
Options
droplang accepts the following command line arguments:
- langname
Specifies the name of the procedural language to be removed. (This name is lower-cased.)
- [-d] dbname
[--dbname=]dbname Specifies from which database the language should be removed. The default is to use the database with the same name as the current system user.
- -e
--echo Display SQL commands as they are executed.
- -l
--list Show a list of already installed languages in the target database.
- -V
--version Print the droplang version and exit.
- -?
--help Show help about droplang command line arguments, and exit.
droplang also accepts the following command line arguments for connection parameters:
- -h host
--host=host Specifies 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=port Specifies the Internet TCP/IP port or local Unix domain socket file extension on which the server is listening for connections.
- -U username
--username=username User name to connect as.
- -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 droplang to prompt for a password before connecting to a database.
This option is never essential, since droplang will automatically prompt for a password if the server demands password authentication. However, droplang 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.
Environment
- PGDATABASE
PGHOST
PGPORT
PGUSER Default connection parameters
This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see Section 31.14).