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DROPLANG(1)             PostgreSQL Client Applications             DROPLANG(1)



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 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 [drop_lan-
       guage(7)] 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 Display SQL commands as they are executed.

       -l

       --list Show a list of already installed languages in the target database.


       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
       in the documentation).


DIAGNOSTICS
       Most error messages are self-explanatory. If not, run droplang with the --echo option and see under the respec-
       tive 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 LANGUAGE [drop_language(7)]



Application                       2014-02-17                       DROPLANG(1)