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https://issues.apache.org/jira/browse/FLINK-13648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-13648:
-----------------------------------
Labels: auto-deprioritized-major auto-deprioritized-minor auto-unassigned
(was: auto-deprioritized-major auto-unassigned stale-minor)
Priority: Not a Priority (was: Minor)
This issue was labeled "stale-minor" 7 days ago and has not received any
updates so it is being deprioritized. If this ticket is actually Minor, please
raise the priority and ask a committer to assign you the issue or revive the
public discussion.
> Support "IS NOT DISTINCT FROM" operator in lookup join
> ------------------------------------------------------
>
> Key: FLINK-13648
> URL: https://issues.apache.org/jira/browse/FLINK-13648
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / Planner
> Reporter: Jark Wu
> Priority: Not a Priority
> Labels: auto-deprioritized-major, auto-deprioritized-minor,
> auto-unassigned
>
> Example1:
> {code:java}
> `SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time
> as of T.proctime AS D ON T.id = D.id OR (T.id is null and D.id is null)`
> {code}
> Example2:
> {code:java}
> "SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time
> as of T.proctime AS D ON T.id IS NOT DISTINCT FROM D.id"
> {code}
> Now run the above sql in Blink planner, the results are not expected.Because
> LookupJoin does not handle the case correctly.
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