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For questions about nullability of references or pointers in programming language, or having a type qualifier for pointer or reference types which specify whether they can be null or not, in order to improve reliability or efficienct by clarifying when null checks are required or not.

3 votes

Why does SQL treat null = null as null, unlike all other mainstream programming languages wh...

Simply put, in the world of SQL, NULL means that the value is unknown. It can mean that the value simply doesn't exist, like it does in other languages. But, since it can mean that the value is unknow …
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