| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu> |
| Cc: | Hannu Krosing <hannu(at)trust(dot)ee>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Ole Gjerde <gjerde(at)icebox(dot)org>, pgsql-hackers(at)postgreSQL(dot)org |
| Subject: | Re: Selectivity of "=" (Re: [HACKERS] Index not used on simple select) |
| Date: | 1999-07-28 04:51:58 |
| Message-ID: | 199907280451.AAA29209@candle.pha.pa.us |
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| Thread: | |
| Lists: | pgsql-hackers |
> > Yes, I think we index nulls. What are partial indexes?
>
> http://www.PostgreSQL.ORG/docs/postgres/partial-index.htm
>
> Postgres had support for this at one time, and probably still does.
>
Wow, that's really nice writing. I think Tom Lane and I ripped that
stuff out of the optimizer. (Only kidding.)
Not sure if any of it works.
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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