dongjoon-hyun commented on a change in pull request #25331: [SPARK-27768][SQL]
Support Infinity/NaN-related float/double literals case-insensitively
URL: https://github.com/apache/spark/pull/25331#discussion_r313193830
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File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
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@@ -1045,4 +1045,34 @@ class CastSuite extends SparkFunSuite with
ExpressionEvalHelper {
Cast(Literal(134.12), DecimalType(3, 2)), "cannot be represented")
}
}
+
+ test("Process Infinity, -Infinity, NaN in case insensitive manner") {
+ checkEvaluation(cast("inf", FloatType), Float.PositiveInfinity)
+ checkEvaluation(cast("+inf", FloatType), Float.PositiveInfinity)
+ checkEvaluation(cast("infinity", FloatType), Float.PositiveInfinity)
+ checkEvaluation(cast("+infiNity", FloatType), Float.PositiveInfinity)
+ checkEvaluation(cast(" infinity ", FloatType), Float.PositiveInfinity)
+ checkEvaluation(cast("-infinity", FloatType), Float.NegativeInfinity)
+ checkEvaluation(cast("-infiniTy", FloatType), Float.NegativeInfinity)
+ checkEvaluation(cast(" -infinity ", FloatType), Float.NegativeInfinity)
+ checkEvaluation(cast(" -inf ", FloatType), Float.NegativeInfinity)
Review comment:
Do we have negative cases returning `NULL` in somewhere else?
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