Configure Terraform to use a shared PostgreSQL server to hold the terraform state and implement locks.
A walkthrough of how you may wish to gracefully handle the need to ingest a large amount of data into your database.
Play around with PostgreSQL with docker so that you don't have to install it locally and can throw it away.
A buildup of how to generate a query to create a "leaderboard" of of your top scorers.
Calculate the distance between two points on earth using PostGIS.
Import spatial data into PostgreSQL and query the data with the help of PostGIS.
Install the routing extension for PostgreSQL
Learn how to use UUIDs in MySQL for your table IDs, rather than using auto_increment.