turboFei commented on a change in pull request #25701: [SPARK-29000][SQL]
Decimal precision overflow when don't allow precision loss
URL: https://github.com/apache/spark/pull/25701#discussion_r321596864
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File path:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala
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@@ -1224,6 +1224,15 @@ class HiveQuerySuite extends HiveComparisonTest with
SQLTestUtils with BeforeAnd
}
}
}
+
+ test("SPARK-29000: arithmetic computation overflow when don't allow decimal
precision loss ") {
+ val allow = sql("set spark.sql.decimalOperations.allowPrecisionLoss")
+ val originValue = allow.collect().apply(0).apply(1)
+ sql("set spark.sql.decimalOperations.allowPrecisionLoss=false")
+ val df = sql("select case when 1=2 then 1 else
100.000000000000000000000000 end * 1")
+ QueryTest.checkAnswer(df, Array(Row(100)))
+ sql(s"set spark.sql.decimalOperations.allowPrecisionLoss=$originValue")
+ }
Review comment:
I have added relative tests in TypeCoericionSuite.
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