xudong963 commented on code in PR #15539:
URL: https://github.com/apache/datafusion/pull/15539#discussion_r2034705121


##########
datafusion/datasource/src/statistics.rs:
##########
@@ -410,23 +410,24 @@ pub async fn get_statistics_with_limit(
 }
 
 /// Generic function to compute statistics across multiple items that have 
statistics
-fn compute_summary_statistics<T, I>(
+/// If `items` is empty or all items don't have statistics, it returns `None`.

Review Comment:
   I can't find a good way to get the schema here: 
https://github.com/apache/datafusion/pull/15539/files#diff-626cbed0ded9d8f8f096d51566824a7dced20802a643bf9748ccd7787823855eR214.
   
   Do you have any suggestions?



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