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https://issues.apache.org/jira/browse/FLINK-9715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16633747#comment-16633747
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Piotr Nowojski commented on FLINK-9715:
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[~hequn8128] probably something like that would be possible to implement, but
it isn't right now nor is it planned. Also it would need separate discussion
to define the semantic what should it mean. For append only tables it would
make sense (return only the rows between {{rowtime_s}} and {{rowtime_e}} ?),
but what about retractions and/or updates? If row is removed/updated in this
period, what should be returned?
> Support versioned joins with event time
> ---------------------------------------
>
> Key: FLINK-9715
> URL: https://issues.apache.org/jira/browse/FLINK-9715
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.5.0
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Major
> Labels: pull-request-available
>
> Queries like:
> {code:java}
> SELECT
> o.amount * r.rate
> FROM
> Orders AS o,
> LATERAL TABLE (Rates(o.rowtime)) AS r
> WHERE o.currency = r.currency{code}
> should work with event time
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