droplang 1 Application droplang remove a PostgreSQL procedural language droplang connection-options langname dbname droplang connection-options --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 performs a number of checks and is much easier to use. See for more. 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. PGDATABASE PGHOST PGPORT PGUSER Default connection parameters. 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 for more possibilities. Use to add a language. To remove pltcl: $ droplang pltcl dbname