A semantic version data type for PostgreSQL
PLpgSQL C Other
Latest commit 0ad862f May 7, 2017 @maspalio maspalio release v0.17.0


semver 0.17.0

PGXN version Build Status

This library contains a single PostgreSQL extension, a data type called "semver". It's an implementation of the version number format specified by the Semantic Versioning 2.0.0 Specification.


To build semver:

make install
make installcheck

If you encounter an error such as:

"Makefile", line 8: Need an operator

You need to use GNU make, which may well be installed on your system as gmake:

gmake install
gmake installcheck

If you encounter an error such as:

make: pg_config: Command not found

Be sure that you have pg_config installed and in your path. If you used a package management system such as RPM to install PostgreSQL, be sure that the -devel package is also installed. If necessary tell the build process where to find it:

env PG_CONFIG=/path/to/pg_config make && make installcheck && make install

If you encounter an error such as:

ERROR:  must be owner of database regression

You need to run the test suite using a super user, such as the default "postgres" super user:

make installcheck PGUSER=postgres

Once semver is installed, you can add it to a database. If you're running PostgreSQL 9.1.0 or greater, it's a simple as connecting to a database as a super user and running:


If you've upgraded your cluster to PostgreSQL 9.1 and already had semver installed, you can upgrade it to a properly packaged extension with:

CREATE EXTENSION semver FROM unpackaged;

For versions of PostgreSQL less than 9.1.0, you'll need to run the installation script:

psql -d mydb -f /path/to/pgsql/share/contrib/semver.sql

If you want to install semver and all of its supporting objects into a specific schema, use the PGOPTIONS environment variable to specify the schema, like so:

PGOPTIONS=--search_path=extensions psql -d mydb -f semver.sql


The semver data type has no dependencies other than PostgreSQL and PL/pgSQL.

Copyright and License

Copyright (c) 2010-2016 The pg-semver Maintainers: David E. Wheeler, Sam Vilain, Tom Davis, and Xavier Caron.

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 The pg-semver Maintainers 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 The pg-semver Maintainers have been advised of the possibility of such damage.

The pg-semver Maintainers 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 The pg-semver Maintainers no obligations to provide maintenance, support, updates, enhancements, or modifications.