asterixdb-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Mike Carey <dtab...@gmail.com>
Subject Re: Modified/Custom plan: Push-down SELECT for external source.
Date Sat, 27 Aug 2016 20:37:12 GMT
It would be INCREDIBLY helpful be able to do this (also for internal 
sources) - e.g., even our basic index access operators could optionally 
accept a filter to apply to the records they'd otherwise simply return.  
This could especially useful when combined with limit pushdown, I would 
think, too.


On 8/26/16 3:44 PM, Wail Alkowaileet wrote:
> Hi AsterixDBers.
>
> Is there any easy way to push-down filter to an external source (in my case
> Parquet) without being too intrusive ?
>
> This can perform way faster than STREAM-SELECT, as parquet can potentially
> skip Row Groups while scanning.


Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message