All of this would be avoided if NULL in sql was just called "UNKNOWN". Which is what it is. Terrible name :/ Imo, SQL should add "NOTHING", add "UNKNOWN" as a

All of this would be avoided if NULL in sql was just called "UNKNOWN". Which is what it is. Terrible name :/ Imo, SQL should add "NOTHING", add "UNKNOWN" as a synonym for "NULL", and deprecate "NULL".