viirya commented on a change in pull request #24576: [SPARK-27671][SQL] Fix
error when casting from a nested null in a struct
URL: https://github.com/apache/spark/pull/24576#discussion_r283077897
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
##########
@@ -990,4 +990,34 @@ class CastSuite extends SparkFunSuite with
ExpressionEvalHelper {
}
}
}
+
+ test("SPARK-27671: cast from nested null type in struct") {
+ import DataTypeTestUtils._
+
+ atomicTypes.foreach { atomicType =>
+ val struct = Literal.create(
+ InternalRow(
+ UTF8String.fromString("123"),
+ UTF8String.fromString("true"),
+ UTF8String.fromString("f"),
+ null),
+ StructType(Seq(
+ StructField("a", StringType, nullable = true),
+ StructField("b", StringType, nullable = true),
+ StructField("c", StringType, nullable = true),
+ StructField("d", NullType, nullable = true))))
+
+ val ret = cast(struct, StructType(Seq(
+ StructField("a", StringType, nullable = true),
+ StructField("b", StringType, nullable = true),
+ StructField("c", StringType, nullable = true),
+ StructField("d", atomicType, nullable = true))))
+ assert(ret.resolved)
+ checkEvaluation(ret, InternalRow(
+ UTF8String.fromString("123"),
+ UTF8String.fromString("true"),
+ UTF8String.fromString("f"),
+ null))
+ }
+ }
Review comment:
Removed.
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