createlang Man page

CREATELANG(1) PostgreSQL 9.5.5 Documentation CREATELANG(1)

NAME

createlang – install a PostgreSQL procedural language

SYNOPSIS

createlang [connection-option…] langname [dbname]

createlang [connection-option…] –list | -l [dbname]

DESCRIPTION

createlang is a utility for adding a procedural language to a
PostgreSQL database.

createlang is just a wrapper around the CREATE EXTENSION
(CREATE_EXTENSION(7)) SQL command.

Caution
createlang is deprecated and may be removed in a future PostgreSQL
release. Direct use of the CREATE EXTENSION command is recommended
instead.

OPTIONS

createlang accepts the following command-line arguments:

langname
Specifies the name of the procedural language to be installed.
(This name is lower-cased.)

[-d] dbname
[–dbname=]dbname
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.

-e
–echo
Display SQL commands as they are executed.

-l
–list
Show a list of already installed languages in the target database.

-V
–version
Print the createlang version and exit.

-?
–help
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.

-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 createlang 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.

ENVIRONMENT
PGDATABASE
PGHOST
PGPORT
PGUSER
Default connection parameters

This utility, like most other PostgreSQL utilities, also uses the
environment variables supported by libpq (see Section 31.14,
“Environment Variables”, in the documentation).

DIAGNOSTICS
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.

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 EXTENSION (CREATE_EXTENSION(7)), CREATE LANGUAGE
(CREATE_LANGUAGE(7))

PostgreSQL 9.5.5 2016 CREATELANG(1)

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