Can we stop with the SQL JOINs venn diagrams insanity?

Randy Au
Towards Data Science
5 min readFeb 28, 2019

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Really, please, OMG, stop

Pet peeve time. I’ve had to teach SQL to non-technical people multiple times over the years and everyone who’s ever tried to learn SQL and failed talk about how “joins are hard and scary”. If you were to search online for explanations of SQL joins, yeah, it looks insane.

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I stress about data quality a lot. Data nerd/scientist, camera junkie. Quant UXR @Google Cloud. Formerly @bitly, @Meetup, @primarydotcom. Opinions are my own.