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PostgreSQL Reference Manual - Volume 1 - SQL Language Reference
by The PostgreSQL Global Development Group
Paperback (6"x9"), 716 pages
ISBN 0954612027
RRP £32.00 ($49.95)

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13.3 createlang

Name

createlang -- define a new PostgreSQL procedural language

Synopsis

createlang [connection-option...] langname [dbname]

createlang [connection-option...] --list | -l dbname

Description

createlang is a utility for adding a new programming language to a PostgreSQL database. createlang is just a wrapper around the CREATE LANGUAGE command, q.v. for additional information.

Options

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.

Environment

PGDATABASE
PGHOST
PGPORT
PGUSER
Default connection parameters

Diagnostics

Most error messages are self-explanatory. If not, run createlang with the --echo option and see under the respective SQL command for details.

Notes

Use droplang to remove a language.

Examples

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.

See Also

droplang, CREATE LANGUAGE, Environment Variables ( Volume 2: Environment Variables)

ISBN 0954612027PostgreSQL Reference Manual - Volume 1 - SQL Language ReferenceSee the print edition