I feel like philip greenspun deserves a mention as one of the OG's in this practice. https://philip.greenspun.com/sql/trees.html https://philip.greenspun.com/s

I feel like philip greenspun deserves a mention as one of the OG's in this practice. https://philip.greenspun.com/sql/trees.html https://philip.greenspun.com/sql/trees.html