[GitHub] [arrow-datafusion] alamb commented on a diff in pull request #5468: use table stats for `DataFrame::describe` method count result

["alamb (via GitHub)" <gi...@apache.org>]

alamb commented on code in PR #5468:
URL: https://github.com/apache/arrow-datafusion/pull/5468#discussion_r1125060023


##########
datafusion/core/src/dataframe.rs:
##########
@@ -344,24 +344,30 @@ impl DataFrame {
             .collect::<Vec<_>>();
         describe_schemas.insert(0, Field::new("describe", DataType::Utf8, false));
 
+        //count aggregation
+        let cnt = self.clone().count().await?;
+
         //collect recordBatch
         let describe_record_batch = vec![
             // count aggregation
-            self.clone()
-                .aggregate(
-                    vec![],
-                    fields_iter
+            vec![RecordBatch::try_new(

Review Comment:
   I don't fully understand this change, but it seems ok.
   
   



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