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From Jignesh Patel <jipa...@pivotal.io>
Subject Re: [jira] [Commented] (QUICKSTEP-20) Add parser support for SQL window aggregation function
Date Tue, 14 Jun 2016 19:22:18 GMT
Great point Julian and something that I have been thinking about too. 

I’d love to kick off a discussion to see how we can find a way to make this work. I’d
love to give a talk to the Calcite team sometime later on this summer (July?) on Quickstep
and explore this very synergy. 

Some of the ORCA guys have also been thinking about this. But, in the end it boils down to
two things: a) Synergy and b) Some commitment from the two projects to make this work.

For Quickstep, the goal is quite clear: we want to focus on the key aspects of our platform
that relate to fast query execution and flexible scheduling. But, need to do this in a way
that is trivially easy for users to use. 


> Julian Hyde commented on QUICKSTEP-20:
> --------------------------------------
> It sounds as if Quickstep is going down the route of building a full SQL parser, validator,
planner. This is fine, but it is a huge amount of work to produce something that is high quality.
Have you considered using Apache Calcite? Calcite is written in Java but that shouldn't be
too much of an issue because Calcite can work as a pre-processor, producing a physical plan
that can be run without any Java in the runtime.
>> Add parser support for SQL window aggregation function
>> ------------------------------------------------------
>>                Key: QUICKSTEP-20
>>                URL: https://issues.apache.org/jira/browse/QUICKSTEP-20
>>            Project: Apache Quickstep
>>         Issue Type: New Feature
>>         Components: Parser
>>           Reporter: Shixuan Fan
>>             Labels: features, newbie
>> The first part of window aggregation function. There will be new grammar introduced
to the parser so that the parser could understand a window aggregation query.
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