amaliujia commented on code in PR #38415:
URL: https://github.com/apache/spark/pull/38415#discussion_r1010018988
##########
connector/connect/src/main/protobuf/spark/connect/relations.proto:
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@@ -213,3 +213,13 @@ message Sample {
int64 seed = 1;
}
}
+
+// Relation alias.
+message SubqueryAlias {
+ // Required. The input relation.
+ Relation input = 1;
+ // Required. The alias.
Review Comment:
Given our discussion on the protocol, this is a required field so we ask
clients to always set it. Server side only fetch the value in this field not
matter what it is (either `""`, or not)
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