Is your feature request related to a problem or challenge?

The join implementation currently removes nulls during equality checking - I believe it would be faster / more efficient if we did so during the hash lookup - by hashing NULLs that occur on the probe side to a different value than NULLs that occur on the build side. The hash table lookup would then (very likely) result in a miss

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response