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https://issues.apache.org/jira/browse/IMPALA-9059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18043451#comment-18043451
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Arnab Karmakar commented on IMPALA-9059:
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This Jira item does not require any additional implementation, as all necessary
functionality is already supported when using the Calcite planner. The only
remaining improvements would be to add corresponding tests and documentation.
> Add UNPIVOT operator
> --------------------
>
> Key: IMPALA-9059
> URL: https://issues.apache.org/jira/browse/IMPALA-9059
> Project: IMPALA
> Issue Type: New Feature
> Components: Frontend
> Reporter: Greg Rahn
> Assignee: Arnab Karmakar
> Priority: Critical
> Labels: sql-language
>
> References:
> *
> https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_10002.htm#CHDCEJJE
> *
> https://docs.microsoft.com/en-us/sql/t-sql/queries/from-using-pivot-and-unpivot?view=sql-server-ver15
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