rusackas commented on PR #27073:
URL: https://github.com/apache/superset/pull/27073#issuecomment-1972148074

   @Zakyrel it's an unusual, but valid use case. We'd probably be open to a 
proposal/PR for such a fix. 
   
   In the meantime, I wonder if you can do a workaround by adjusting the query 
to spit out a row of NULLs when there's no REAL data. Something like:
   
   ```
   SELECT company.taxnumber, company.name, company.status, 
company.termination_date
   FROM company
   WHERE company.status = 'In activity'
   AND company.termination_date IS NOT NULL
   
   UNION ALL
   
   SELECT NULL as taxnumber, NULL as name, NULL as status, NULL as 
termination_date
   WHERE NOT EXISTS (
       SELECT 1
       FROM company
       WHERE company.status = 'In activity'
       AND company.termination_date IS NOT NULL
   );
   ```


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