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It is not the case that every programmer has to know SQL (if it ever was).

Programming is now such a big field that plenty of people will go their whole careers without knowledge that's foundational for other programmers - whether it be SQL, linear algebra, memory management, distributed systems, ...

In a way, it's very cool. Instead of a single-dimensional "how good a programmer are you", we've got a multidimensional space. That, naturally, yields a lot more interesting corners, like, say, what could be invented by someone who knows a lot about databases and GPUs.

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