liukun4515 commented on issue #1488:
URL: 
https://github.com/apache/arrow-datafusion/issues/1488#issuecomment-1001147324


   creating `external table` with CSV file, you can give the schema by sql  
just like
   ```
   crete external table test_table(c1 int, c2 float, c3 ....)  .... loacation 
'.........'
   ```


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