It is my belief that database nuts should get familiar with noSQL. We live in a world where noSQL has become very prominent. Get familiar with JSON. Get familiar with Mongo and Cassandra. These tools are very useful in some ways, and you CAN do things with them that you cannot do with SQL.
The link above is my initial foray into programming with JSON. Please forgive the mess. It consists of a Centers for Disease Control dataset and an autocomplete library (I want to say that it was bootstrap3/jquery but it’s been a long time since I’ve worked on this). You can find the source code here.