Can you reverse a string in PostgreSQL?

I'm开发者_StackOverflow中文版 interested in reversing a string in PostgreSQL.

PostgreSQL 9.1 and later includes a built-in function

 reverse(text)

http://www.postgresql.org/docs/current/static/functions-string.html

Here you have reversing string function for PostreSQL:

http://a-kretschmer.de/diverses.shtml