matthewgapp commented on code in PR #7638:
URL: https://github.com/apache/arrow-datafusion/pull/7638#discussion_r1338752948


##########
datafusion/sqllogictest/test_files/window.slt:
##########
@@ -3315,3 +3315,23 @@ SELECT
   window1 AS (ORDER BY C3)
   ORDER BY C3
   LIMIT 5
+
+# Create table with window functions that have nullable: false columns should 
result in correct schema during cross join

Review Comment:
   Note that starting with version 47.0.0 of Arrow, the tests referenced will 
no longer fail (without the fixes provided in this PR) because Arrow has 
stopped checking for schema nullability. For more context, visit [issue 
comment](https://github.com/apache/arrow-datafusion/issues/7636#issuecomment-1737225422).
   
   Therefore, I plan to introduce tests that explicitly check for nullable: 
false in the logical schema where it is expected, such as in columns created 
via row_number(), rank(), and similar functions. I will address this tonight.



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