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https://issues.apache.org/jira/browse/FLINK-23179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17371219#comment-17371219
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Aitozi commented on FLINK-23179:
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Big+1 [~lzljs3620320] Is there any plan for the support of pivot syntax?  I'm 
interested in this, i think the ability to turn rows to columns will be useful 
in some scenes.

> Support PIVOT and UNPIVOT 
> --------------------------
>
>                 Key: FLINK-23179
>                 URL: https://issues.apache.org/jira/browse/FLINK-23179
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Runtime
>            Reporter: Jingsong Lee
>            Priority: Major
>
> See PIVOT in SqlServer: 
> [https://docs.microsoft.com/en-us/sql/t-sql/queries/from-using-pivot-and-unpivot?view=sql-server-ver15]
> Not only in batch, Streaming also has this requirement.
> See PIVOT in others system:
> [https://docs.oracle.com/cd/E11882_01/server.112/e25554/analysis.htm#DWHSG8732]
> [http://modern-sql.com/use-case/pivot]
> [https://docs.microsoft.com/zh-cn/previous-versions/sql/sql-server-2008-r2/ms177410(v=sql.105)?redirectedfrom=MSDN]
> [https://www.postgresql.org/docs/9.5/tablefunc.html]
> [https://docs.oracle.com/cd/B28359_01/server.111/b28313/sqlmodel.htm#g1042989]
> [https://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_10002.htm#SQLRF01702]
> [https://www.oracle.com/cn/database/articles/technology/pivot-and-unpivot.html]
> [https://databricks.com/blog/2016/02/09/reshaping-data-with-pivot-in-apache-spark.html]
> [http://sqlhints.com/2014/03/10/pivot-and-unpivot-in-sql-server/]
> https://issues.apache.org/jira/browse/SPARK-8992
> [https://spark.apache.org/docs/1.6.3/api/scala/index.html#org.apache.spark.sql.GroupedData]
> [https://www.slideshare.net/SparkSummit/pivoting-data-with-sparksql-by-andrew-ray]
>  



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