Re: [GENERAL] "Hash index" vs. "b-tree index" (PostgreSQL

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От Neil Conway
Тема Re: [GENERAL] "Hash index" vs. "b-tree index" (PostgreSQL
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Msg-id 4282135A.8000909@samurai.com
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Ответ на Re: [GENERAL] "Hash index" vs. "b-tree index" (PostgreSQL  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom Lane wrote:
> Performance?

I'll run some benchmarks tomorrow, as it's rather late in my time zone.
If anyone wants to post some benchmark results, they are welcome to.

> I disagree completely with the idea of forcing this behavior for all
> datatypes.  It could only be sensible for fairly wide values; you don't
> save enough to justify the lossiness otherwise.

I think it would be premature to decide about this before we see some
performance numbers. I'm not fundamentally opposed, though.

> [ BTW, posting patches to pgsql-general seems pretty off-topic. ]

Not any more than discussing implementation details is :) But your point
is well taken, I'll send future patches to -patches.

-Neil

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