A Rubyist's Guide to Postgresql's Explain
It's a simple idea. Just ask postgres to explain how it plans to perform a query and it'll tell you. You can even have it execute the query it and compare expected performance to actual.
A Rubyist's Guide to Postgresql's Explain #ruby #rubydeveloper #rubyonrails #guide https://rubyonrails.ba/single/a-rubyist-s-guide-to-postgresql-s-explain