Re: improving GROUP BY estimation - Mailing list pgsql-hackers

From Tom Lane
Subject Re: improving GROUP BY estimation
Date
Msg-id 31529.1459609156@sss.pgh.pa.us
Whole thread Raw
In response to Re: improving GROUP BY estimation  (Dean Rasheed <dean.a.rasheed@gmail.com>)
List pgsql-hackers
Dean Rasheed <dean.a.rasheed@gmail.com> writes:
> Here's an updated patch with references to both papers, and a more
> detailed justification for the formula, along with the other changes
> discussed. Note that although equation (2) in the Dell'Era paper looks
> different from the Yao formula, it's actually the same.

Looks good to me.
        regards, tom lane



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