zhengruifeng commented on code in PR #38475:
URL: https://github.com/apache/spark/pull/38475#discussion_r1011300086
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connector/connect/src/main/protobuf/spark/connect/relations.proto:
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@@ -250,3 +251,15 @@ message SubqueryAlias {
// Optional. Qualifier of the alias.
repeated string qualifier = 3;
}
+
+// Rename columns on the input relation.
+message RenameColumns {
Review Comment:
i am afraid we have to add a logical for nearly each df API, even for simple
functions like `toDF` ( as well as `withColumn`,
[`dropDuplicates`](https://github.com/apache/spark/commit/b14da8b1b65d9f00f49fab87f738715089bc43e8))
which depend on analyzed plan.
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