Re: Combining Aggregates - Mailing list pgsql-hackers

From Haribabu Kommi
Subject Re: Combining Aggregates
Date
Msg-id CAJrrPGesjqBW6oNez3hVe+iBZwRvM=AsnaDQHdJEkXpGmGc4-A@mail.gmail.com
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In response to Re: Combining Aggregates  (Haribabu Kommi <kommi.haribabu@gmail.com>)
Responses Re: Combining Aggregates  (David Rowley <david.rowley@2ndquadrant.com>)
List pgsql-hackers
On Thu, Jan 21, 2016 at 1:33 PM, Haribabu Kommi
<kommi.haribabu@gmail.com> wrote:
>
> Here I attached updated patch of parallel aggregate based on the latest
> changes in master. Still it lack of cost comparison of normal aggregate to
> parallel aggregate because of difficulty. This cost comparison is required
> in parallel aggregate as this is having some regression when the number
> of groups are less in the query plan.
>

Updated patch is attached after removing a warning in building group
aggregate path.

Regards,
Hari Babu
Fujitsu Australia

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