Good resources for learning PL/pgSQL?
plpgsql, postgresql, sql
Solution
The best free intro to use along the official docs is at PL/pgSQL and its associated tricks page of non-trivial examples, although the translation is a bit rough in spots. More useful examples can be found rooting through the snippets page.
There are also decent chapters on PL/pgSQL inside "PostgreSQL Developer's Handbook" by Geschwinde/Schonig and "PostgreSQL" by Korry Douglas, both of which are a bit gentler intro to the language than the official docs. Those are both excellent general PostgreSQL books you might find useful for other reasons too.
Problem
I've been looking around the net trying to find good resources for learning PostgreSQL's procedural programming language, PL/pgSQL. So far the only thing I've managed to dig up is the tutorial in the PostgreSQL documentation. While that is good, I've been looking for something more in-depth. Can you recommend anything?