Reference
https://www.geeksforgeeks.org/sql-join-set-1-inner-left-right-and-full-joins/
https://diegobittencourt.org/en/2024/06/08/7-most-common-sql-joins/
https://dk81.github.io/dkmathstats_site/set-theory-sql.html
https://www.linkedin.com/pulse/types-joins-sql-muhammed-inzamam/