PostgreSQL 10 Released
It's 2017, and despite all this parallel stuff, query planners are still dumb as bricks. Every day I get annoyed at various obvious-to-the-eye WHERE clause pushdown opportunities, or situations where I can manually copy a view to a table, add indexes, and build a query on top of that quicker than letting the database fill up the entire disk with temporary files trying to do it as a subquery. It's utterly maddening if you spend your life on ad-hoc analytics/reporting workloads.<p>I strongly believe there are huge opportunities for AI to come along and, given a logical description of the data and query, do a better job of physically organising and serving the data. I realise some database management systems do this to an extent, but it's pretty weak sauce in my experience.