cloud-fan commented on issue #27627: [WIP][SPARK-28067][SQL] Fix incorrect results for decimal aggregate sum by returning null on decimal overflow URL: https://github.com/apache/spark/pull/27627#issuecomment-598002388 > Is the expectation that the user would now call this from their queries for their decimal sum operations? No, it's just a new expression. Analyzer is responsible for converting `Sum` with decimal type input to `DecimalSum`. > Won't we also need to check for overflow in here as well. ah yes, thanks for catching it!
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