Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/20023#discussion_r162246729 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala --- @@ -1048,6 +1048,16 @@ object SQLConf { .booleanConf .createWithDefault(true) + val DECIMAL_OPERATIONS_ALLOW_PREC_LOSS = + buildConf("spark.sql.decimalOperations.allowPrecisionLoss") + .internal() + .doc("When true (default), establishing the result type of an arithmetic operation " + + "happens according to Hive behavior and SQL ANSI 2011 specification, ie. rounding the " + + "decimal part of the result if an exact representation is not possible. Otherwise, NULL " + + "is returned in those cases, as previously.") --- End diff -- Yeah. This is better.
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