Defines a new procedural language for a database.
createlang [connection_option ...] [-e] langname [[-d] dbname] createlang [connection-option ...] -l dbname createlang --help createlang --version
The createlang utility adds a new programming language to a database. createlang is a wrapper around the SQL command CREATE LANGUAGE.
The procedural language packages included in the standard Greenplum Database distribution are:
The PL/pgSQL language is registered in all databases by default.
Greenplum Database has a language handler for PL/R, but the PL/R language package is not pre-installed with Greenplum Database. A package is available for PL/Tcl that you can enable. See the Procedural Languages section in the PostgreSQL documentation for more information.
- 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 PGDATABASE environment variable setting, or the same name as the current system user.
- -e | --echo
- Echo the commands that createlang generates and sends to the server.
- -l dbname | --list dbname
- Show a list of already installed languages in the target database.
- -h host | --host host
- The host name of the machine on which the Greenplum master database server is running. If not specified, reads from the environment variable PGHOST or defaults to localhost.
- -p port | --port port
- The TCP port on which the Greenplum master database server is listening for connections. If not specified, reads from the environment variable PGPORT or defaults to 5432.
- -U username | --username username
- The database role name to connect as. If not specified, reads from the environment variable PGUSER or defaults to the current system role name.
- -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 a password prompt.
To install the language plperl into the database mytestdb:
createlang plperl mytestdb