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

Naive Bayes classifiers are very good at language identification. You find implementations in all the major languages, or you can implement one yourself, it's not extremely hard. The wikipedia entry is interesting too: https://en.wikipedia.org/wiki/Naive_Bayes_classifier.