| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: disbursion |
| Date: | 2000-06-01 23:48:55 |
| Message-ID: | 28910.959903335@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)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
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2000-06-01 23:53:09 | Re: Problems with recent CVS versions and Solaris. |
| Previous Message | Bruce Momjian | 2000-06-01 23:45:07 | disbursion again |