Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/11208#discussion_r52958310
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -362,12 +362,26 @@ class Analyzer(
exprs.flatMap {
case s: Star => s.expand(child, resolver)
case e =>
- e.transformDown {
+ e.transformUp {
+ // ResolveFunctions can handle the case when the number of
variables is not valid
case f1: UnresolvedFunction if containsStar(f1.children) =>
f1.copy(children = f1.children.flatMap {
case s: Star => s.expand(child, resolver)
case o => o :: Nil
})
+ case c: CreateStruct if containsStar(c.children) =>
+ c.copy(children = c.children.flatMap {
+ case s: Star => s.expand(child, resolver)
+ case o => o :: Nil
+ })
+ case c: CreateStructUnsafe if containsStar(c.children) =>
--- End diff --
`CreateStructUnsafe` only appears after unsafe projection, so I think we
don't need to handle it in `Analyzer`
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