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https://issues.apache.org/jira/browse/CALCITE-5392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alessandro Solimando resolved CALCITE-5392.
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Fix Version/s: 1.33.0
Resolution: Fixed
Fixed via
[{{e37ecb6}}|https://github.com/apache/calcite/commit/e37ecb63e0c59aec7a4ba79b4d3473dd1cd2cfed],
thanks [~jiajunbernoulli] for your contribution!
> 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
> Labels: pull-request-available
> Fix For: 1.33.0
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> 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.
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