skambha commented on issue #27629: [SPARK-28067][SQL]Fix incorrect results during aggregate sum for decimal overflow by throwing exception URL: https://github.com/apache/spark/pull/27629#issuecomment-587924941 Please see [my notes](https://issues.apache.org/jira/browse/SPARK-28067?focusedCommentId=17039403&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17039403) in this JIRA for the two approaches to fix this issue. This is a implementation for approach 1 fix. This is simple and straightforward compared to the approach2 PR. I have another [pr 27627](https://github.com/apache/spark/pull/27627) that takes approach 2 to fix this issue. Both these will fix the incorrect results (which is good). Each have their pros and cons as listed in my comment in the JIRA.
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