Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18023#discussion_r124964462
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala
---
@@ -307,6 +311,28 @@ case class UnresolvedStar(target: Option[Seq[String]])
extends Star with Unevalu
}
/**
+ * Represents all of the input attributes to a given relational operator,
for example in
+ * "SELECT `(id)?+.+` FROM ...".
+ *
+ * @param table an optional table that should be the target of the
expansion. If omitted all
+ * tables' columns are produced.
+ */
+case class UnresolvedRegex(regexPattern: String, table: Option[String])
+ extends Star with Unevaluable {
+ override def expand(input: LogicalPlan, resolver: Resolver):
Seq[NamedExpression] = {
+ table match {
+ // If there is no table specified, use all input attributes that
match expr
+ case None =>
input.output.filter(_.name.matches(s"(?i)$regexPattern"))
--- End diff --
You need to check the conf
`sparkSession.sessionState.conf.caseSensitiveAnalysis`
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