[
https://issues.apache.org/jira/browse/CALCITE-5392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17636267#comment-17636267
]
Jiajun Xie commented on CALCITE-5392:
-------------------------------------
Here is PR:https://github.com/apache/calcite/pull/2976
> Support Snapshot in RelMdExpressionLineage
> ------------------------------------------
>
> Key: CALCITE-5392
> URL: https://issues.apache.org/jira/browse/CALCITE-5392
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Jiajun Xie
> Assignee: Jiajun Xie
> Priority: Major
>
> For example:
> {code:java}
> select productid from products_temporal
> for system_time as of TIMESTAMP '2022-11-19 00:00:00'
> {code}
> The `productid` expression lineage is null because `RelMdExpressionLineage`
> does not implement the corresponding method.
>
> We can implement method that for SNAPSHOT like other RelNode.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
