Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/21482#discussion_r192549111 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/nullExpressions.scala --- @@ -199,6 +199,50 @@ case class Nvl2(expr1: Expression, expr2: Expression, expr3: Expression, child: override def sql: String = s"$prettyName(${expr1.sql}, ${expr2.sql}, ${expr3.sql})" } +/** + * Evaluates to `true` iff it's Infinity. + */ +@ExpressionDescription( + usage = "_FUNC_(expr) - Returns True if expr evaluates to infinite else returns False ", + examples = """ + Examples: + > SELECT _FUNC_(1/0); + True --- End diff -- Can you run the example and check the results?
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