Say NO to Venn diagrams when explaining JOINs ↦
Venn diagrams are great for explaining set operations such as
EXCEPT, but they aren’t so great at explaining
A JOIN is really a cartesian product (also cross product) with a filter.
Turns out there’s a better way:
JOIN diagrams, which I’ve never even heard of. Click through to read all about ’em. 🤓
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