Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/15956#discussion_r88845470
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala
---
@@ -388,6 +388,21 @@ abstract class BinaryComparison extends BinaryOperator
with Predicate {
defineCodeGen(ctx, ev, (c1, c2) => s"${ctx.genComp(left.dataType,
c1, c2)} $symbol 0")
}
}
+
+ override def inputType: AbstractDataType = AnyDataType
--- End diff --
We need this to satisfy `BinaryOperator`, the type checking logic is
defined by both `BinaryOperator` and `checkInputDataTypes` here. Shall we make
`BinaryComparison` not extends `BinaryOperator` and duplicate its type checking
logic here?
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