MaxGekk commented on code in PR #44336:
URL: https://github.com/apache/spark/pull/44336#discussion_r1436132674
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala:
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@@ -1300,14 +1301,16 @@ trait ComplexTypeMergingExpression extends Expression {
lazy val inputTypesForMerging: Seq[DataType] = children.map(_.dataType)
def dataTypeCheck: Unit = {
- require(
- inputTypesForMerging.nonEmpty,
- "The collection of input data types must not be empty.")
- require(
- TypeCoercion.haveSameType(inputTypesForMerging),
- "All input types must be the same except nullable, containsNull,
valueContainsNull flags. " +
- s"The expression is: $this. " +
- s"The input types found
are\n\t${inputTypesForMerging.mkString("\n\t")}.")
+ SparkException.require(
+ requirement = inputTypesForMerging.nonEmpty,
+ errorClass = "COMPLEX_EXPRESSION_UNSUPPORTED_INPUT.NO_INPUTS",
Review Comment:
> I'll add tests
Please, add end-to-end tests for the errors to `QueryCompilationErrorsSuite`
using public API or SQL, and remove the tests from `ExpressionSuite`.
FYI, we introduce error classes for user facing errors. In the case if an
error is not visible to users, we should consider to convert it to an internal
error.
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