srielau commented on code in PR #41007:
URL: https://github.com/apache/spark/pull/41007#discussion_r1194380150
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala:
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@@ -276,6 +279,138 @@ object UnresolvedAttribute {
}
}
+/**
+ * Holds an identifier clause for an attribute that has yet to be resolved.
+ */
+case class UnresolvedAttributeIdentifierClause(expr: Expression)
+ extends Expression with Unevaluable {
+
+ override def children: Seq[Expression] = Seq(expr)
+
+ override def dataType: DataType = throw new UnresolvedException("dataType")
+ override def nullable: Boolean = throw new UnresolvedException("nullable")
+ override lazy val resolved = false
+ final override val nodePatterns: Seq[TreePattern] =
Seq(UNRESOLVED_IDENTIFIER_CLAUSE)
+
+ override def prettyName: String = "IDENTIFIER"
+ override def toString: String = {
+ s"'(${children.mkString(", ")})"
+ }
+
+ override protected def withNewChildrenInternal(newChildren:
IndexedSeq[Expression]):
+ UnresolvedAttributeIdentifierClause = {
+ copy(expr = newChildren.head)
+ }
+}
+
+case class UnresolvedFunctionIdentifierClause(
+ identExpr: Expression,
Review Comment:
Addressed
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