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https://issues.apache.org/jira/browse/SPARK-33503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17236139#comment-17236139
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Apache Spark commented on SPARK-33503:
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User 'prakharjain09' has created a pull request for this issue:
https://github.com/apache/spark/pull/30430
> Refactor SortOrder class to allow multiple childrens
> ----------------------------------------------------
>
> Key: SPARK-33503
> URL: https://issues.apache.org/jira/browse/SPARK-33503
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.1
> Reporter: Prakhar Jain
> Priority: Major
>
> Currently the SortOrder is a UnaryExpression with only one child. It contains
> a field "sameOrderExpression" that needs some special handling as done in
> [https://github.com/apache/spark/pull/30302] .
>
> One of the suggestion in
> [https://github.com/apache/spark/pull/30302#discussion_r526104333] is to make
> sameOrderExpression as children of SortOrder.
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