Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/21826#discussion_r204192991 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala --- @@ -442,8 +442,6 @@ case class Or(left: Expression, right: Expression) extends BinaryOperator with P override def inputType: AbstractDataType = BooleanType - override def symbol: String = "||" --- End diff -- If you remove it, it will not compile.
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