Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5616#discussion_r29213040
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala
---
@@ -83,8 +83,8 @@ abstract class BinaryArithmetic extends BinaryExpression {
def dataType: DataType = {
if (!resolved) {
- throw new UnresolvedException(this,
- s"datatype. Can not resolve due to differing types
${left.dataType}, ${right.dataType}")
+ throw new UnresolvedException(this, "Unresolved datatype. Can not
resolve due to " +
--- End diff --
I just realized UnresolvedException has a pretty weird definition.
https://github.com/apache/spark/blob/4754e16f4746ebd882b2ce7f1efc6e4d4408922c/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala#L31
...
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