The article does a good job of explaining the difference between WHERE and HAVING. The simplest resource I've found for this is Julia Evans' "SQL queries run in

The article does a good job of explaining the difference between WHERE and HAVING. The simplest resource I've found for this is Julia Evans' "SQL queries run in this order" [0], which points out for example that SELECTs are one of the last things to run in a query. I've managed software teams and data engineering teams, and both teams get tripped up with even moderate SQL queries. To simplify, we encouraged teams to use a clearer subset of SQL. Most HAVING can be replaced with a WHERE inside a more readable and explicit subquery. Similarly, we got rid of most RIGHT JOINS. [0] https://jvns.ca/blog/2019/10/03/sql-queries-don-t-start-with-select/ https://jvns.ca/blog/2019/10/03/sql-queries-don-t-start-with...