Alex Shulgin <alex.shul...@gmail.com> writes:
> On Sun, Apr 3, 2016 at 7:49 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
>> If there is only one value, it will have 100% of the samples, so it would
>> get included under just about any decision rule (other than "more than
>> 100% of this value plus following values"). I don't think making sure
>> this case works is sufficient to get us to a reasonable rule --- it's
>> a necessary case, but not a sufficient case.
> Well, if it's the only value it will be accepted simply because we are
> checking that special case already and don't even bother to loop through
> the track list.
That was demonstrably not the case in the failing regression test.
I forget what aspect of the test case allowed it to get past the short
circuit, but it definitely got into the scan-the-track-list code.
regards, tom lane
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
