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Re:Show HN: Visual SQL by thingsilearned on Wednesday March 11, 2020 @08:17PM (#22552226)
It's free to download on dataschool.com. I agree on the gap and that's why we wrote this book. We launched that on HN here 5 months ago

https://chartio.com/blog/cloud-data-management-book-launch/

Re:Show HN: Visual SQL by mulmen on Wednesday March 11, 2020 @08:27PM (#22552285)
Oh wow, I missed this entirely, thank you for pointing it out and I will give it a read tonight.