amaliujia commented on code in PR #38345:
URL: https://github.com/apache/spark/pull/38345#discussion_r1002886307
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connector/connect/src/main/protobuf/spark/connect/relations.proto:
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@@ -109,6 +109,7 @@ message Join {
Relation right = 2;
Expression join_condition = 3;
JoinType join_type = 4;
+ repeated string using_columns = 5;
Review Comment:
Based on the current Catalyst implementation. My read is yes.
My understanding is current Catalyst implementation does not support `JOIN
USING col_name,...` in the join_condition. It is a separate code path. Is it
true?
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