Greg Stark <gsstark@mit.edu> writes:
> Tom Lane <tgl@sss.pgh.pa.us> writes:
>> (Also, I have been harboring some notions of supporting cross-type hash
>> joins for integer types, which will not work unless small int8 values hash
>> the same as int4 etc.)
> The obvious way to modify the hash function is to xor the high 32 bits with
> the low 32 bits. That maintains the property you need
No it doesn't ...
regards, tom lane