Scott Ribe wrote on 23.01.2013 23:56:
> For a client who needs to learn how to query the db:
>
> - No SQL knowledge at all; needs to start from square 1.
>
> - Smart, capable person, who will be in this position for a long time, using this db for a long time.
>
> - No chance in hell this db will be moved off PG, so PG-centric is fine ;-)
>
Not a book, but I like http://sqlzoo.net/
You can switch between different DBMS - including PostgreSQL - when doing the exercises