cloud-fan commented on a change in pull request #31859:
URL: https://github.com/apache/spark/pull/31859#discussion_r596926825
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnsiTypeCoercionSuite.scala
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@@ -377,10 +368,26 @@ class AnsiTypeCoercionSuite extends AnalysisTest {
ArrayType(StringType, true),
TypeCollection(ArrayType(StringType), StringType),
ArrayType(StringType, true))
+
+ // When there are multiple convertible types in the `TypeCollection`, use
the closet convertible
+ // data type among convertible types.
+ shouldCast(IntegerType, TypeCollection(BinaryType, FloatType, LongType),
LongType)
+ shouldCast(IntegerType, TypeCollection(BinaryType, LongType, NumericType),
IntegerType)
+ // If the result is Float type and Double type is also among the
convertible target types,
+ // use Double Type instead of Float type.
+ shouldCast(LongType, TypeCollection(FloatType, DoubleType, StringType),
DoubleType)
}
test("ineligible implicit type cast - TypeCollection") {
+ shouldNotCast(IntegerType, TypeCollection(StringType, BinaryType))
+ shouldNotCast(IntegerType, TypeCollection(BinaryType, StringType))
shouldNotCast(IntegerType, TypeCollection(DateType, TimestampType))
+ shouldNotCast(IntegerType, TypeCollection(DecimalType(10, 2), StringType))
+ shouldNotCastStringInput(TypeCollection(NumericType, BinaryType))
+ // When there are multiple convertible types in the `TypeCollection` and
there is no closest
+ // convertible data type among the convertible types.
+ shouldNotCastStringLiteral(TypeCollection(NumericType, BinaryType))
Review comment:
This duplicates the previous case.
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