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https://issues.apache.org/jira/browse/DRILL-6546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16531912#comment-16531912
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ASF GitHub Bot commented on DRILL-6546:
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vvysotskyi commented on issue #1346: DRILL-6546: Allow unnest function with
nested columns and complex expressions
URL: https://github.com/apache/drill/pull/1346#issuecomment-402289998
AFAIK, currently allowed only unnest with single column. When several
unnests are used, they will have their own Correlate rel nodes. Pp
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> Allow unnest function with nested columns and complex expressions
> -----------------------------------------------------------------
>
> Key: DRILL-6546
> URL: https://issues.apache.org/jira/browse/DRILL-6546
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Volodymyr Vysotskyi
> Assignee: Volodymyr Vysotskyi
> Priority: Major
> Fix For: 1.14.0
>
>
> Currently queries with unnest and nested columns or complex expressions
> inside fails:
> {code:sql}
> select u.item from cp.`lateraljoin/nested-customer.parquet` c,
> unnest(c.orders.items) as u(item)
> {code}
> fails with error:
> {noformat}
> VALIDATION ERROR: From line 2, column 10 to line 2, column 21: Column
> 'orders.items' not found in table 'c'
> {noformat}
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