[
https://issues.apache.org/jira/browse/CALCITE-3271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16913762#comment-16913762
]
Rui Wang commented on CALCITE-3271:
-----------------------------------
Thanks Julian for you feedback. I will add more to this JIRA to clarify what
it's supposed to do and replace terms by some more standard way (e.g. terms
from SQL standard).
Thanks Jark for the pointer of blink's practice. It's great to know that it
would be also useful to other projects. Currently I should formalize what
should be done under this JIRA. It would be nice to get help when on technique
discussion, implementation, etc.
> TVF windowing and EMIT syntax support in Calcite
> ------------------------------------------------
>
> Key: CALCITE-3271
> URL: https://issues.apache.org/jira/browse/CALCITE-3271
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.20.0
> Reporter: Danny Chan
> Assignee: Rui Wang
> Priority: Major
>
> Copied from the mailing list:
> Calcite has not implemented the syntax in that paper. I would support an
> effort to add it (unsurprising, since I am a co-author of that paper).
> EMIT STREAM is equivalent to the current SELECT STREAM syntax.
> There is no equivalent in current Calcite of the EMIT AFTER WATERMARK, or
> EMIT STREAM AFTER DELAY.
> HOP, TUMBLE and SESSION are supported in Calcite’s SQL parser, but following
> the paper would be replaced with a table function call. We could need to add
> HOP, TUMBLE and SESSION table functions. We would also need to make the
> system aware of how watermarks flow through these table functions (an area
> that the paper does not go into).
> Julian
--
This message was sent by Atlassian Jira
(v8.3.2#803003)
