cloud-fan commented on code in PR #36881:
URL: https://github.com/apache/spark/pull/36881#discussion_r903236179
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/v2Commands.scala:
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@@ -53,7 +53,7 @@ trait V2WriteCommand extends UnaryCommand {
val outType =
CharVarcharUtils.getRawType(outAttr.metadata).getOrElse(outAttr.dataType)
// names and types must match, nullability must be compatible
inAttr.name == outAttr.name &&
Review Comment:
It's actually more complicated than it looks. We have a rule
`ResolveOutputRelation` to do the by-name resolution for top-level columns.
Case sensitivity is not the only inconsistency between top-level columns and
inner fields. We should update `ResolveOutputRelation` to take care of inner
fields as well.
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