Language detection with data in PostgreSQL

Question

I have a table in PostgreSQL where a column is a text. I need a library or tool that can identify the language of each text for a test purpose.

There is no need for

Answer 1

Also there is a language detection webservice which provides both free and premium services at http://detectlanguage.com

It has Ruby and PHP clients, but can be accessed from any language simple web request. Output is in JSON.