From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Reiner Dassing <dassing(at)wettzell(dot)ifag(dot)de>, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Best database structure for timely ordered values |
Date: | 2000-12-18 16:22:20 |
Message-ID: | 200012181622.LAA26713@candle.pha.pa.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
> Reiner Dassing <dassing(at)wettzell(dot)ifag(dot)de> writes:
> > The primary index must be the epoch.
> > As there will be no deletion from this data I fear - due to the
> > internal representation of B-trees - the performance will degrade very
> > soon.
>
> Nonsense. btree should work just fine for that. Use a timestamp
> column for the primary key, and away you go.
>
> (Actually, time alone doesn't seem like it'd be necessarily unique,
> so maybe you don't want to call it a primary key. But certainly
> you can make a non-unique index on that column.)
I assume the user is concerned about non-balanced btrees. Ours are
auto-balancing.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
From | Date | Subject | |
---|---|---|---|
Next Message | Reiner Dassing | 2000-12-18 16:40:23 | Re: Best database structure for timely ordered values |
Previous Message | Tom Lane | 2000-12-18 15:41:47 | Re: Re: [SQL] PostgreSQL crashes on me :( |