Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/19559#discussion_r147318866 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala --- @@ -783,6 +783,37 @@ class Analyzer( } } + /** + * Literal functions do not require the user to specify braces when calling them + * When an attributes is not resolvable, we try to resolve it as a literal function. + */ + private def resolveAsLiteralFunctions( + nameParts: Seq[String], + attribute: UnresolvedAttribute, + plan: LogicalPlan): Option[Expression] = { + if (nameParts.length != 1) { + return None + } + val isNamedExpression = plan match { + case a @ Aggregate(_, aggs, _) if (aggs.contains(attribute)) => + true + case p @ Project(projList, _) if (projList.contains(attribute)) => + true + case _ => --- End diff -- Miss `Windows`
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