DROPLANG(1) PostgreSQL Client Applications DROPLANG(1)NAME
droplang - remove a PostgreSQL procedural language
droplang [ connection-option... ] langname [ dbname ]
droplang [ connection-option... ] [ --list ] [ -l ] dbname
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 per‐
forms a number of checks and is much easier to use. See DROP LANGUAGE
[drop_language(7)] for more.
droplang accepts the following command line arguments:
Specifies the name of the backend programming language to be
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.
--echo Display SQL commands as they are executed.
--list Show a list of already installed languages in the target data‐
droplang also accepts the following command line arguments for connec‐
Specifies the host name of the machine on which the server is
running. If host begins with a slash, it is used as the direc‐
tory for the Unix domain socket.
Specifies the Internet TCP/IP port or local Unix domain socket
file extension on which the server is listening for connections.
User name to connect as.
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 droplang to prompt for a password before connecting to a
This option is never essential, since droplang will automati‐
cally 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
PGUSER Default connection parameters
This utility, like most other PostgreSQL utilities, also uses the envi‐
ronment variables supported by libpq (see in the documentation).
Most error messages are self-explanatory. If not, run droplang with the
--echo option and see under the respective SQL command for details.
Also, any default connection settings and environment variables used by
the libpq front-end library will apply.
Use createlang(1) to add a language.
To remove the language pltcl:
$ droplang pltcl dbname
SEE ALSOcreatelang(1), DROP LANGUAGE [drop_language(7)]
Application 2013-10-08 DROPLANG(1)