How to handle NULL (empty fields) and common pitfalls

For those new to data analysis, I will explain how to handle NULL (empty fields), where mistakes are most common in SQL, ...
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Null Dilemma: The internet refuses to believe this man exists thanks to bad SQL coding

If you are unlucky enough to have the surname "Null", you basically don't exist, as far as some SQL servers are concerned iStock It is a troublesome process registering for an account with online ...

[Code Philosophy Essay] null is not 'nothing' but 'not yet decided' — I left the empty values unfilled

There is a field left emptyOctober 14, 2026. Wednesday. A field on the screen remains empty. In the code, that emptiness is ...