HyukjinKwon commented on code in PR #39960:
URL: https://github.com/apache/spark/pull/39960#discussion_r1102206732
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connector/connect/common/src/main/protobuf/spark/connect/relations.proto:
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@@ -729,13 +729,17 @@ message Unpivot {
repeated Expression ids = 2;
// (Optional) Value columns to unpivot.
- repeated Expression values = 3;
+ optional Values values = 3;
Review Comment:
cc @amaliujia @zhengruifeng FYI
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