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https://issues.apache.org/jira/browse/SPARK-41047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17630676#comment-17630676
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Hyukjin Kwon commented on SPARK-41047:
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cc [~wuyi] [~cloud_fan]. This seems from
https://github.com/apache/spark/commit/ff39c9271ca04951b045c5d9fca2128a82d50b46
https://issues.apache.org/jira/browse/SPARK-30252
> round function with negative scale value runs failed
> ----------------------------------------------------
>
> Key: SPARK-41047
> URL: https://issues.apache.org/jira/browse/SPARK-41047
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.2.2
> Reporter: liyang
> Priority: Major
>
> Run this sql in spark-sql: select round(1.233, -1);
> Error: org.apache.spark.sql.AnalysisException: Negative scale is not allowed:
> -1. You can use spark.sql.legacy.allowNegativeScaleOfDecimal=true to enable
> legacy mode to allow it.;
> But the document of round function implies that negative scale argument is
> allowed.
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