Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/23171#discussion_r237402055 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala --- @@ -335,6 +343,41 @@ case class In(value: Expression, list: Seq[Expression]) extends Predicate { """.stripMargin) } + private def genCodeWithSwitch(ctx: CodegenContext, ev: ExprCode): ExprCode = { + val (nullLiterals, nonNullLiterals) = list.partition { + case Literal(null, _) => true + case _ => false + } + val listGen = nonNullLiterals.map(_.genCode(ctx)) + val valueGen = value.genCode(ctx) + + val caseBranches = listGen.map(literal => --- End diff -- style: ```scala listGen.map { literal => ... } ```
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