Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/6178#discussion_r30484488
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -576,6 +576,13 @@ class Analyzer(
/** Extracts a [[Generator]] expression and any names assigned by
aliases to their output. */
private object AliasedGenerator {
def unapply(e: Expression): Option[(Generator, Seq[String])] = e
match {
+ case Alias(g: Generator, name) if g.elementTypes.size > 1 => {
--- End diff --
Yes, agree, we should throw exception if it's not default name here. But
seems very difficult to tell whether it's default name or not, as in `HiveQl`,
it will named each of the column anyway for `Project`.
Any simple way for this?
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