Luca Ferrari <fluca1978@xxxxxxxxxxx> writes: > I'd like to better understand how the optimizer works and is implemented. Is > there any available documentation (before start reading the source!) to > understand concepts about geqo and system r? Any chance about any demo or > presentation with detailed examples (about how the optimizer makes and > discards choices, not about how to read the planner output)? http://developer.postgresql.org/pgdocs/postgres/overview.html (particularly 42.5) src/backend/optimizer/README The developers section of the website used to have slides from a couple of talks I gave at OSCON, but I don't see them there anymore :-( regards, tom lane
