[majewsky]

CREATE TEMP TABLE is really awesome. Not really related, but I used it at my previous gig to optimize the unit tests. They would previously all use the same database that devs use during development, so scans over some large tables were particularly inefficient, and tests could break when someone modified table contents for some development task.

I implemented a small function where you could list the tables that you were working with, and it would create empty temporary tables with the same name in a namespace that takes precedence over the normal namespace in postgres' search_path, therefore giving you a blank slate to work with for the unit test, while the other tables were still populated with useful data. (Some of these data come from expensive infrastructure scanning jobs, so starting from an entirely empty database was not an option.)