[GitHub] [incubator-doris] Astralidea commented on issue #4544: [SQL][Bug] Column type judgment error

[GitBox <gi...@apache.org>]

Astralidea commented on issue #4544:
URL: https://github.com/apache/incubator-doris/issues/4544#issuecomment-688531697


   https://dev.mysql.com/doc/refman/5.7/en/type-conversion.html
   MySQL automatically converts strings to numbers as necessary, and vice versa.
   
   If you follow the MySQL method, 'abc' will be converted to 0.
   other examples:
   ```
   select '2.34' = 2.34,'2.34abc' = 2.34,
          'abc2.34' = 2.34, '2 .34abc' = 2.34,
          '2 .34abc' = 2, 'abc' = 0, 'abc' = 1;
   ```
   results:
   1	1	
   0	0	
   1	1	0
   
   


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