I found the book apprisal somewhere on Reddit in "advanced books on postgres". I expected to find postgres optimization and at least a few pages on how to scale

I found the book apprisal somewhere on Reddit in "advanced books on postgres". I expected to find postgres optimization and at least a few pages on how to scale it (or where to look for solutions), instead I was dissapointed. While it's still a very decent book on SQL syntaxes and advanced queries (I bet even 10y+ PostgreSQL users don't know half of what PostgreSQL can do) here is why I don't recommend it: - poorly written instructions on how to set up Postgres 11 with all those crazy extensions - No epub version (it's simply broken and nobody responds on my emails, instead I get a reminder to continue my learning course which has 2 links, a short intro and a link to the book. I've stopped at 50% just because the book was downloaded from another browser and now I get these irritating emails) - There is a lot of Python in the book, I want to learn SQL and PostgreSQL, not Python or any other sort of languages. I use Py professionally but it does not mean I want it to be tied to SQL. - There are unrelated interviews, for instance, a guy who worked on Django ORMs (how is this related to my SQL knowledge) Don't get me wrong, don't treat this comment as a rant about how bad the book is, the SQL tricks are really awesome there, however if you think about buying this book, go for 49$ version and expect to have some pain to setup everything. I am like 50/50 on asking for refund