Re: clustering by partial indexes
От | Bruce Momjian |
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Тема | Re: clustering by partial indexes |
Дата | |
Msg-id | 200511160141.jAG1f6n25063@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: clustering by partial indexes ("Jim C. Nasby" <jnasby@pervasive.com>) |
Ответы |
Re: clustering by partial indexes
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Список | pgsql-general |
Jim C. Nasby wrote: > On Tue, Nov 15, 2005 at 10:18:26AM -0800, Steve Crawford wrote: > > Not trivial? Seems to me more like impossible to implement for the > > general case which would require you to resolve the situation where > > someone requests multiple, overlapping, clustered partial indexes > > where the ordering requirements are in conflict. > > Well, currently you can only cluster on a single index per table, and I > really doubt that will change. In any case, if someone's going to work > on clustered indexes I think it would be much more worthwhile to make > them self-maintaining (or at least more self-maintaining). Wow, imagine if we could cluster by partial indexes, and then imagine we could allow multiple clustering per table if the partial indexes did not overlap --- that is a massive project. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
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