xenial (1) droplang.1.gz

NAME

       droplang - remove a PostgreSQL procedural language

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 (DROP_EXTENSION(7)) 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, “Environment Variables”, in the documentation).

DIAGNOSTICS

       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.

NOTES

       Use createlang(1) to add a language.

EXAMPLES

       To remove the language pltcl:

           $ droplang pltcl dbname

SEE ALSO

       createlang(1), DROP EXTENSION (DROP_EXTENSION(7)), DROP LANGUAGE (DROP_LANGUAGE(7))