Re: Looking for a good programming reference

Your request is a bit generic. I'm not sure what you mean by "a decent programming book", as that can encompass several programming languages.

That being said, if you are specifically wanting to learn more about PostgreSQL, I would suggest you look into the following 3 books.

PostgreSQL 9 Administration Cookbook

PostgreSQL for DataArchitects

PostgreSQL Developer Guide

and don't neglect the excellent reference manual, https://www.postgresql.org/docs/current/static/index.html

-- 
john r pierce, recycling bits in santa cruz