Jimexist opened a new issue #592:
URL: https://github.com/apache/arrow-datafusion/issues/592


   > looks like integration test is failing due to mismatch between logical 
schema and physical schema for window queries, i will dig into this.
   
   thanks, it might be because of some edge cases that i did miss. i didn't 
find time to fix it but so far this query will fail:
   
   ```sql
   > select max(c1) over () max_c1, max(c1) over (partition by c2) max_c1_by_c2 
from test;
   Plan("Schema contains duplicate unqualified field name 'MAX(c1)'")
   ```
   
   _Originally posted by @Jimexist in 
https://github.com/apache/arrow-datafusion/pull/55#issuecomment-864556916_


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