[jira] [Commented] (FLINK-23305) Support semi/anti interval joins

["Timo Walther (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-23305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17377193#comment-17377193 ] 

Timo Walther commented on FLINK-23305:
--------------------------------------

CC [~jark] Semantically the query should be correct, no?

> Support semi/anti interval joins
> --------------------------------
>
>                 Key: FLINK-23305
>                 URL: https://issues.apache.org/jira/browse/FLINK-23305
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner
>            Reporter: Timo Walther
>            Priority: Major
>
> I don't see a reason why we shouldn't support interval joins also for semi/anti joins like:
> {code}
> SELECT *
> FROM OT
> WHERE EXISTS (
>     SELECT *
>     FROM TT
>     WHERE TT.tx = OT.tx AND
>         TT.isEnd = TRUE AND
>         TT.rowtime BETWEEN OT.rowtime AND OT.rowtime + INTERVAL '1' HOUR)
> {code}
> The resulting plan contains a join operation anyway but without detecting the interval.



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