Piotr Stefaniak <postg...@piotr-stefaniak.me> writes:
> I'm not saying this is necessarily a bug since the whole function deals 
> with floats, but perhaps it's interesting to note that ndistinct can be 
> 0 in src/backend/utils/adt/selfuncs.c:estimate_hash_bucketsize:

I think it's basically cosmetic unless you've got a machine that traps
zero divide, but still that's good to fix.  Thanks for the report!

                        regards, tom lane

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