Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/22307#discussion_r214814919
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
---
@@ -1311,7 +1311,10 @@ class AstBuilder(conf: SQLConf) extends
SqlBaseBaseVisitor[AnyRef] with Logging
protected def visitFunctionName(ctx: QualifiedNameContext):
FunctionIdentifier = {
ctx.identifier().asScala.map(_.getText) match {
case Seq(db, fn) => FunctionIdentifier(fn, Option(db))
- case Seq(fn) => FunctionIdentifier(fn, None)
+ case Seq(fn) => fn.split('.').toSeq match {
--- End diff --
This, at the very least, breaks users app ... even if this is a correct
behaviour within Hive, we should target this 3.0.0.
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