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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