Ask HN: How do you test SQL? | Hacker News
https://news.ycombinator.com/item?id=34602318
Say NO to Venn Diagrams When Explaining JOINs
https://blog.jooq.org/2016/07/05/say-no-to-venn-diagrams-when-explaining-joins/
What ORMs have taught me: just learn SQL
https://wozniak.ca/blog/2014/08/03/What-ORMs-have-taught-me-just-learn-SQL/
r/programming - Say NO to Venn Diagrams When Explaining JOINs
https://www.reddit.com/r/programming/comments/ad1bo5/say_no_to_venn_diagrams_when_explaining_joins/