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I saw HN arguing about this post the other day. Apparently lots of people find the Venn approach really useful as a mnemonic even though it doesn't really capture what's going on. I was surprised - I found it actively confusing and unhelpful when learning. https://news.ycombinator.com/item?id=18890893 …
I did like this animated explanation that was posted somewhere in that HN argument:https://www.zmwolski.com/sql-joins-explained-visually …
I will check that animation out later.
Currently in an Apple Store, took my phone in for a new battery and it came back with the home button not working 
Yeah, that’s nicely done.
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