createlang (1) - Linux Manuals
createlang: install a PostgreSQL procedural language
createlang - install a PostgreSQL procedural language
- createlang [connection-option...] langname [dbname]
- createlang [connection-option...] --list | -l [dbname]
createlang is just a wrapper around the CREATE EXTENSION (CREATE_EXTENSION(7)) SQL command.
createlang is deprecated and may be removed in a future PostgreSQL release. Direct use of the CREATE EXTENSION command is recommended instead.
createlang accepts the following command-line arguments:
- Specifies the name of the procedural language to be installed. (This name is lower-cased.)
- Specifies the database to which the language should be added. The default is to use the database with the same name as the current system user.
- Display SQL commands as they are executed.
- Show a list of already installed languages in the target database.
- Print the createlang version and exit.
- Show help about createlang command line arguments, and exit.
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.
- 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.
to prompt for a password before connecting to a database.
This option is never essential, since createlang will automatically prompt for a password if the server demands password authentication. However, createlang 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.
PGDATABASE, PGHOST, PGPORT, PGUSER
- Default connection parameters
Most error messages are self-explanatory. If not, run createlang with the --echo option and see the respective SQL command for details. Also, any default connection settings and environment variables used by the libpq front-end library will apply.
Use droplang(1) to remove a language.
To install the language pltcl into the database template1:
$ createlang pltcl template1