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https://issues.apache.org/jira/browse/FLINK-9391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16594752#comment-16594752
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Mikhail Sokolov commented on FLINK-9391:
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I looked on example with _Join_ udtf and found the following chain of calls:
CorrelateITCase#testCrossJoin -> table.scala#join ->
operators.scala#Join#construct -> RelBuilder#join
The problem is that to make UNNEST the same way as JOIN it is needed to add
unnest function to RelBuilder. But RelBuilder is a part of Apache Calcite.
Should we create a ticket for that? Or may be I missed something?
> Support UNNEST in Table API
> ---------------------------
>
> Key: FLINK-9391
> URL: https://issues.apache.org/jira/browse/FLINK-9391
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Alina Ipatina
> Priority: Major
>
> FLINK-6033 introduced the UNNEST function for SQL. We should also add this
> function to the Table API to keep the APIs in sync.
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