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https://issues.apache.org/jira/browse/SPARK-30790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17034461#comment-17034461
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Rakesh Raushan commented on SPARK-30790:
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Should i expose a legacy configuration for mapType as well ??
[~hyukjin.kwon]
> The datatype of map() should be map<null,null>
> ----------------------------------------------
>
> Key: SPARK-30790
> URL: https://issues.apache.org/jira/browse/SPARK-30790
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Rakesh Raushan
> Priority: Minor
>
> Currently ,
> spark.sql("select map()") gives {}.
> To be consistent with the changes made in SPARK-29462, it should return
> map<null,null>.
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