Thread: disbursion

Tom, since you check pg_statsistic in the optimizer for the most common
value, should we downgrade the pg_attribute.attdisbursion value when we
know the value is not the most common value?  Are you doing that
already?

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Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Tom, since you check pg_statsistic in the optimizer for the most common
> value, should we downgrade the pg_attribute.attdisbursion value when we
> know the value is not the most common value?  Are you doing that
> already?

Yeah, we already do.  In fact the last tweak in that area was to reduce
the ratio we multiply by in just that situation.  It's a poor substitute
for actually having better stats of course...
        regards, tom lane