Linus has taken a break from linux development to work on his behavior and got professional help too. Be apologized for his past abusive behavior too. But yeah Linus was very much abusive in the past and I’m glad he worked on it, cause his behavior is much better today.

At the (SQL) database level, if you are using null in any sane way, it means “this value exists but is unknown”.

Null at the SQL means that the value isn’t there, idk where you’re getting that from. SQL doesn’t have anything like JS’s undefined, there’s no other way to represent a missing value in sql other than null (you could technically decide on certain values for certain types, like an empty string, but that’s not something SQL defines).