aokolnychyi commented on code in PR #55518:
URL: https://github.com/apache/spark/pull/55518#discussion_r3424001894
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/RewriteUpdateTable.scala:
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@@ -106,38 +105,78 @@ object RewriteUpdateTable extends RewriteRowLevelCommand {
val remainingRowsPlan = addOperationColumn(COPY_OPERATION,
Filter(remainingRowFilter, readRelation))
- // the new state is a union of updated and copied over records
- val query = Union(updatedRowsPlan, remainingRowsPlan)
+ val updatedAndRemainingRowsPlan = Union(updatedRowsPlan, remainingRowsPlan)
- // build a plan to replace read groups in the table
val writeRelation = relation.copy(table = operationTable)
Review Comment:
Why don't we want to narrow down the expected schema in the write relation
too in this case?
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