amaliujia commented on code in PR #43614:
URL: https://github.com/apache/spark/pull/43614#discussion_r1387214224
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala:
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@@ -156,7 +171,15 @@ trait CheckAnalysis extends PredicateHelper with
LookupCatalog with QueryErrorsB
// If a CTE relation is never used, it will disappear after inline. Here
we explicitly check
// analysis for it, to make sure the entire query plan is valid.
try {
- if (refCount == 0) checkAnalysis0(relation.child)
Review Comment:
Ok I added some comments to explain we are trying to check the leaf relation
first because that gives the most accurate error message.
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