[GitHub] [spark] grundprinzip commented on a diff in pull request #38023: [SPARK-40587][CONNECT] Support SELECT * in an explicit way in connect proto

[GitBox <gi...@apache.org>]

grundprinzip commented on code in PR #38023:
URL: https://github.com/apache/spark/pull/38023#discussion_r982536156


##########
connect/src/main/protobuf/spark/connect/expressions.proto:
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@@ -155,4 +156,7 @@ message Expression {
     string expression = 1;
   }
 
+  // represent * (e.g. SELECT *)

Review Comment:
   ```suggestion
     // UnresolvedStar is used to expand all the fields of a relation or struct.
   ```



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