[jira] [Resolved] (SPARK-39876) Unpivot / melt function for SQL

["Wenchen Fan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-39876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-39876.
---------------------------------
    Fix Version/s: 3.4.0
       Resolution: Fixed

Issue resolved by pull request 37407
[https://github.com/apache/spark/pull/37407]

> Unpivot / melt function for SQL
> -------------------------------
>
>                 Key: SPARK-39876
>                 URL: https://issues.apache.org/jira/browse/SPARK-39876
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 3.4.0
>            Reporter: Enrico Minack
>            Assignee: Enrico Minack
>            Priority: Major
>             Fix For: 3.4.0
>
>
> With SPARK-38864 the Dataset API now has an unpivot / melt function. This should also be accessible through SQL statements, similar syntax as in [BigQuery|https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#unpivot_operator], [T-SQL|https://docs.microsoft.com/en-us/sql/t-sql/queries/from-using-pivot-and-unpivot?view=sql-server-ver15#unpivot-example], [Oracle|https://www.oracletutorial.com/oracle-basics/oracle-unpivot/].



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