Re: Performance on inserts
От | Bruce Momjian |
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Тема | Re: Performance on inserts |
Дата | |
Msg-id | 200010152151.RAA16188@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Performance on inserts (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Performance on inserts
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Список | pgsql-hackers |
> > * Prevent index lookups (or index entries using partial index) on most > > common values; instead use sequential scan > > This behavior already exists for the most common value, and would > exist for any additional values that we had stats for. Don't see > why you think a separate TODO item is needed. You mean the optimizer already skips an index lookup for the most common value, and instead does a sequential scan? Seems you are way ahead of me. -- 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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