Phoenix500526 commented on code in PR #23189:
URL: https://github.com/apache/datafusion/pull/23189#discussion_r3544007555


##########
datafusion/catalog-listing/src/table.rs:
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@@ -628,6 +630,15 @@ impl TableProvider for ListingTable {
                 );
             }
             Some(output_partitioning)
+        } else if partitioned_by_file_group {
+            // Files are grouped by partition column values: declare Hash
+            // partitioning on those columns so the optimizer can skip hash

Review Comment:
   The comment is updated. 



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