[
https://issues.apache.org/jira/browse/CALCITE-4337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17214373#comment-17214373
]
Jark Wu commented on CALCITE-4337:
----------------------------------
I dont' think SESSION window TVF must be used with GROUP BY, they should be
decoupled. A SESSION window can be used alone (just generate window columns) or
be used with other operators, in this case, the optimizer don't know what the
{{Exchange}} should be and how to partition data.
> Supports PARTITION BY clause for table function table argument
> --------------------------------------------------------------
>
> Key: CALCITE-4337
> URL: https://issues.apache.org/jira/browse/CALCITE-4337
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Affects Versions: 1.26.0
> Reporter: Danny Chen
> Assignee: Danny Chen
> Priority: Major
> Fix For: 1.27.0
>
>
> An example from the SQL standard 2016 Polymorphic Table Functions:
> {code:sql}
> SELECT W.wstart, W.wend, OI.customer, SUM(OI.price)
> FROM TABLE(SESSION(
> data => TABLE(order_item) AS OI PARTITION BY customer,
> timecol => DESCRIPTOR(order_time),
> timeout => INTERVAL '10' MINUTE)) W
> GROUP BY 1, 2, 3
> {code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
