oleg-zinovev commented on issue #1836: DRILL-7156: empty parquet files support
URL: https://github.com/apache/drill/pull/1836#issuecomment-520812579
 
 
   > Please provide example...
   
   
   
   > Is there a way to write combined schema in this case?
   
   @arina-ielchiieva , thank you for your comment. 
   
   I can try to make a combined scheme, but:
   - What type of field should be written if the first BatchSchema contains 
field "A" with type "bigint", and the second - field "A" with type "varchar"? 
The last one wins?
   - What about union vectors?

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