Why doesn't SQL support “= null” instead of “is null”?

Question

I\'m not asking if it does. I know that it doesn\'t.

I\'m curious as to the reason. I\'ve read support docs such as as this one on Working With Nu

Answer 1

Because in ANSI SQL, null means "unknown", which is not a value. As such, it doesn't equal anything; you can just evaluate the value's state (known or unknown).