[
https://issues.apache.org/jira/browse/CALCITE-4977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17472491#comment-17472491
]
duan xiong commented on CALCITE-4977:
-------------------------------------
Fixed in
[8eaa7a7|https://github.com/apache/calcite/commit/8eaa7a7037228fa1d52bc9fe4e78b0ec32fb4638].
Thanks for your PR [~lmagics]. Thanks for your review [~asolimando].
> Support Snapshot in RelMdColumnOrigins
> --------------------------------------
>
> Key: CALCITE-4977
> URL: https://issues.apache.org/jira/browse/CALCITE-4977
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.29.0
> Reporter: Q Kang
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Currently `RelMdColumnOrigins` does not define a specialized method for
> `Snapshot` node. Thus, a request for origin column on a temporal query will
> always return NULL.
> For example:
> {code:java}
> select productid from products_temporal
> for system_time as of timestamp '2011-01-02 00:00:00' {code}
> The origin column of `productid` is NULL.
> We could simply propagate the call to its children like many other RelNode
> types do.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
