Github user mgaido91 commented on a diff in the pull request: https://github.com/apache/spark/pull/19720#discussion_r150406191 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/nullExpressions.scala --- @@ -90,7 +86,12 @@ case class Coalesce(children: Seq[Expression]) extends Expression { } } """ - }.mkString("\n")) + } + + ev.copy(code = s""" + ${ev.isNull} = true; + ${ev.value} = ${ctx.defaultValue(dataType)}; + ${ctx.splitExpressions(ctx.INPUT_ROW, evals)}""") --- End diff -- sorry, I don't see which is the problem here. I see that here the row object is `null`, but the goal is to set `ev.isNull` and `ev.value`, which is done. May you explain me if there is something I am missing? Thanks.
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