szehon-ho commented on code in PR #52866:
URL: https://github.com/apache/spark/pull/52866#discussion_r2491899591
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala:
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@@ -1749,7 +1749,8 @@ class Analyzer(override val catalogManager:
CatalogManager) extends RuleExecutor
m.copy(mergeCondition = resolvedMergeCondition,
matchedActions = newMatchedActions,
notMatchedActions = newNotMatchedActions,
- notMatchedBySourceActions = newNotMatchedBySourceActions)
+ notMatchedBySourceActions = newNotMatchedBySourceActions,
+ originalSourceActions = newMatchedActions ++
newNotMatchedActions)
Review Comment:
note: because (not)matchedActions actions get changed by rule:
ResolveRowLevelCommandAssignments, i need to preserve the original user
actions/assignments so that MergeIntoTable.referencedSourceSchema and
needsSchemaEvolution is idempotent
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