Stephen,

Again a great article, but if I could throw in one little tiny technicality to this I would feel much better 😀

While I realize the emphasis of your article was against 2 tables, and therefore you wrote it as such, I would like to point out that the left and right side of EXCEPT, INTERSECT, and UNION Operators is the comparison of 'query results' and not 'tables'. Though a seemingly minor point, I felt necessary to point it out 😀