Re: [PR] fix: aggregation corner case [datafusion]

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

chenkovsky commented on PR #15457:
URL: https://github.com/apache/datafusion/pull/15457#issuecomment-2774229631

   I found that in the following sql.
   
   ```
   create table t(i integer);
   SELECT count(*) FROM (select count(*) from t);
   ```
   
   for the outer aggregation,
   both logical plan and physical plan's schemas are empty.
   
   


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