aokolnychyi commented on code in PR #41028:
URL: https://github.com/apache/spark/pull/41028#discussion_r1183777434
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/RewriteRowLevelCommand.scala:
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@@ -117,8 +118,26 @@ trait RewriteRowLevelCommand extends Rule[LogicalPlan] {
plan: LogicalPlan,
attrs: Seq[Attribute]): ProjectingInternalRow = {
- val colOrdinals = attrs.map(attr => plan.output.indexWhere(_.exprId ==
attr.exprId))
+ val colOrdinals = attrs.map(attr => findColOrdinal(plan, attr.name))
val schema = StructType.fromAttributes(attrs)
ProjectingInternalRow(schema, colOrdinals)
}
+
+ // if there are assignment to row ID attributes, original values are
projected as special columns
+ // this method honors such special columns if present
+ private def newLazyRowIdProjection(
Review Comment:
Postgres, for instance, allows updates to primary keys.
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