Contents

• hostname 1.0.0
  • Synopsis
  • Description
  • Author
  • Copyright and License

hostname 1.0.0

Synopsis

CREATE EXTENSION hostname;

SELECT hostname();
      hostname
--------------------
 myhost.example.com

Description

This library contains a single PostgreSQL function, hostname(), which returns the PostgreSQL server host name. The function uses gethostname() to get the host name. If it fails, NULL will be returned. If you need it not to return NULL, use COALESCE():

SELECT COALESCE(NULL, '[unknown]');
 coalesce  
-----------
 [unknown]

Author

David E. Wheeler, based on code posted to the PostgreSQL Wiki by "Brick", and with many thanks to Sean Chittenden for C implementation advice and constructive criticism.

Copyright and License

Copyright (c) 2013-2018 David E. Wheeler.

This module is free software; you can redistribute it and/or modify it under the PostgreSQL License.

Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without a written agreement is hereby granted, provided that the above copyright notice and this paragraph and the following two paragraphs appear in all copies.

In no event shall David E. Wheeler be liable to any party for direct, indirect, special, incidental, or consequential damages, including lost profits, arising out of the use of this software and its documentation, even if David E. Wheeler has been advised of the possibility of such damage.

David E. Wheeler specifically disclaim any warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The software provided hereunder is on an "as is" basis, and David E. Wheeler have no obligations to provide maintenance, support, updates, enhancements, or modifications.