Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/22898#discussion_r229667653 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/encoders/ExpressionEncoder.scala --- @@ -124,14 +124,9 @@ object ExpressionEncoder { s"`GetColumnByOrdinal`, but there are ${getColExprs.size}") val input = GetStructField(GetColumnByOrdinal(0, schema), index) - val newDeserializer = enc.objDeserializer.transformUp { + enc.objDeserializer.transformUp { case GetColumnByOrdinal(0, _) => input } - if (schema(index).nullable) { - If(IsNull(input), Literal.create(null, newDeserializer.dataType), newDeserializer) --- End diff -- good catch!
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