Re: [HACKERS] path toward faster partition pruning

On Sat, Sep 16, 2017 at 4:04 AM, Robert Haas <robertmhaas@gmail.com> wrote:
> On Fri, Sep 15, 2017 at 4:50 AM, Amit Langote
> <Langote_Amit_f8@lab.ntt.co.jp> wrote:
>> Rebased patches attached.  Because Dilip complained earlier today about
>> clauses of the form (const op var) not causing partition-pruning, I've
>> added code to commute the clause where it is required.  Some other
>> previously mentioned limitations remain -- no handling of OR clauses, no
>> elimination of redundant clauses for given partitioning column, etc.
>>
>> A note about 0001: this patch overlaps with
>> 0003-Canonical-partition-scheme.patch from the partitionwise-join patch
>> series that Ashutosh Bapat posted yesterday [1].
>
> It doesn't merely overlap; it's obviously a derivative work,

Yes it is.  I noted that upthread [1] that most of these are derived
from Ashutosh's patch on his suggestion.  I guess I should have
repeated that in this message too, sorry.

> and the
> commit message in your version should credit all the authors.

That was a mistake on my part, too.  Will be careful hereon.

Thanks,
Amit

[1] https://www.postgresql.org/message-id/0e829199-a43c-2a66-b966-89a0020a6cd4%40lab.ntt.co.jp


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