Re: [Postgres-xc-developers] Pushing down ORDER BY clauses or Sorting

[Ashutosh B. <ash...@en...>]

Right, that's one thing, other thing is we don't want to initiate two
queries simultaneously on the same node. In a plan tree with multiple
RemoteQuery nodes, this is very much possible.


On Wed, Aug 14, 2013 at 9:46 AM, Pavan Deolasee <pav...@gm...>wrote:

> On Wed, Aug 7, 2013 at 2:12 PM, Ashutosh Bapat <
> ash...@en...> wrote:
>
>>
>>>
>> This can be done if we move "issueing query" inside ExecInitRemoteQuery,
>> but I am not sure if that can be applied in all the cases. This wouldn't
>> require any change in PG.
>>
>>
>
> I am not sure either. AFAICS we only do initialization in that path. For
> example, Explain will also call ExecutorStart (which in turns initializes
> all the nodes). And we definitely don't want to run a query when its being
> explained.
>
>
> Thanks,
> Pavan
>
> --
> Pavan Deolasee
> http://www.linkedin.com/in/pavandeolasee
>



-- 
Best Wishes,
Ashutosh Bapat
EntepriseDB Corporation
The Postgres Database Company