Re: Why hash indexes suck

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От Bruce Momjian
Тема Re: Why hash indexes suck
Дата
Msg-id 200406100405.i5A45xB13358@candle.pha.pa.us
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Ответ на Re: Why hash indexes suck  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Why hash indexes suck  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > Added to TODO:
> >     * Order heap pointers on hash index pages by hash value and ctid
> 
> [blink]  This seems to miss out on the actual point of the thread (hash
> bucket size shouldn't be a disk page) in favor of an entirely
> unsupported sub-suggestion.

Yes, I was unsure of the text myself.  I have changed it to:
* Allow hash buckets to fill disk pages, rather than being  sparse

If we sorted the keys, how do we insert new entries efficiently?

--  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,
Pennsylvania19073
 


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