Citus columnar datastore
Azure team edit: I' creating this new idea on behalf of a customer to separate it from the votes for Citus on Azure Database for PostgreSQL. If you're interested in Citus columnar datastore (link below), please vote for this idea.
I need this to do big-ish data things:
I am a huge fan of postgresql for data warehousing, and this is a key thing for having the ability to summary large tables quickly.