droplang is a utility for removing an
existing programming language from a
PostgreSQL database.
droplang can drop any procedural language,
even those not supplied by the PostgreSQL distribution.
Although backend programming languages can be removed directly using
several SQL commands, it is recommended to use
droplang because it performs a number
of checks and is much easier to use. See
DROP LANGUAGE
for more.
Options
droplang accepts the following command line arguments:
langname
Specifies the name of the backend programming language to be removed.
[-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
Displays SQL commands as they are executed.
-l --list
Shows a list of already installed languages in the target database
(which must be specified).
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 --password
Force password prompt.
Environment
PGDATABASE PGHOST PGPORT PGUSER
Default connection parameters.
Diagnostics
Most error messages are self-explanatory. If not, run
droplang with the --echo
option and see under the respective SQL command
for details. Check also under psql
for more possibilities.
