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Re: [PERFORM] Distinct-Sampling (Gibbons paper) for Postgres - Mailing list pgsql-hackers

From Josh Berkus
Subject Re: [PERFORM] Distinct-Sampling (Gibbons paper) for Postgres
Date
Msg-id 200504282222.52192.josh@agliodbs.com
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In response to Re: [PERFORM] Bad n_distinct estimation; hacks suggested?  (Andrew Dunstan <andrew@dunslane.net>)
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> Now, if we can come up with something better than the ARC algorithm ...

Tom already did.  His clock-sweep patch is already in the 8.1 source.

--
Josh Berkus
Aglio Database Solutions
San Francisco

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