Re: hist boundary duplicates bug in head and 8.3

"Nathan Boley" <npboley@gmail.com> writes:
>> I don't think this is a bug.

> hmmm... Well, I assumed it was a bug from a comment in analyze.

> From ( near ) line 2130 in analyze.c

>  * least 2 instances in the sample.  Also, we won't suppress values
>  * that have a frequency of at least 1/K where K is the intended
>  * number of histogram bins; such values might otherwise cause us to
>  * emit duplicate histogram bin boundaries.

That's talking about a case where we have a choice whether to include a
value in the MCV list or not.  Once the MCV list is maxed out, we can't
do anything to avoid duplicates.
        regards, tom lane