createlang 1 Application createlang define a new PostgreSQL procedural language createlang createlang connection-option langname dbname createlang connection-option --list-l dbname createlang is a utility for adding a new programming language to a PostgreSQL database. createlang is just a wrapper around the command, which see for additional information. createlang accepts the following command-line arguments: langname Specifies the name of the procedural programming language to be defined. -d dbname --dbname dbname Specifies to which database the language should be added. 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. createlang 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 the value begins with a slash, it is used as the directory for the Unix domain socket. -p port --port port Specifies the TCP 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 This utility, like most other PostgreSQL utilities, also uses the environment variables supported by . Most error messages are self-explanatory. If not, run createlang 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 to remove a language. To install the language pltcl into the database template1: $ createlang pltcl template1 Note that installing the language into template1 will cause it to be automatically installed into subsequently-created databases as well.