amaliujia commented on code in PR #38318:
URL: https://github.com/apache/spark/pull/38318#discussion_r1017138563
##########
connector/connect/src/main/protobuf/spark/connect/relations.proto:
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@@ -246,3 +248,20 @@ message SubqueryAlias {
// Optional. Qualifier of the alias.
repeated string qualifier = 3;
}
+
+// StatFunction
+message StatFunction {
+ // Required. The input relation.
+ Relation input = 1;
+ // Required. The function and its parameters.
+ oneof function {
+ Summary summary = 2;
+
+ Unknown unknown = 999;
Review Comment:
Question: will we add new functions under this `oneof`?
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