Re: Best database structure for timely ordered values
От | Bruce Momjian |
---|---|
Тема | Re: Best database structure for timely ordered values |
Дата | |
Msg-id | 200012181622.LAA26713@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Best database structure for timely ordered values (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-sql |
> Reiner Dassing <dassing@wettzell.ifag.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@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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