Github user liancheng commented on a diff in the pull request: https://github.com/apache/spark/pull/10541#discussion_r48799646 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/conditionalExpressions.scala --- @@ -74,6 +74,12 @@ case class If(predicate: Expression, trueValue: Expression, falseValue: Expressi } override def toString: String = s"if ($predicate) $trueValue else $falseValue" + + override def sql: Option[String] = for { + predicateSQL <- predicate.sql + trueSQL <- trueValue.sql + falseSQL <- falseValue.sql + } yield s"(IF($predicateSQL, $trueSQL, $falseSQL))" } trait CaseWhenLike extends Expression { --- End diff -- Not yet, support for more expressions and operators is still ongoing.
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