zhuqi-lucas commented on PR #14922:
URL: https://github.com/apache/datafusion/pull/14922#issuecomment-2700908676

   > Thank you for this PR and report @zhuqi-lucas
   > 
   > It seems like the problem is that `VARCHAR` in SQL is treated as `Utf8` 
(see my comment here [#14909 
(comment)](https://github.com/apache/datafusion/issues/14909#issuecomment-2700708838))
   > 
   > It seems to me like this PR is a workaround -- if we make this change SQL 
VARCHAR will be treated as Utf8View for create table statements with parquet 
but Utf8 otherwise. I think this discrepancy is why you had to change the 
insert cases
   > 
   > I think a better approach would be to change the mapping of `VARCHAR` to 
`Utf8View` everywhere (change this line
   > 
   > 
https://github.com/apache/datafusion/blob/c0d53adf8323b840d0adaa62ba868d6acd4ba886/datafusion/sql/src/planner.rs#L561
   > 
   > ) though this might be significantly more disruptive
   
   Thank you @alamb for review and explain, mapping of `VARCHAR` to `Utf8View` 
everywhere is really a better solution, i will try to address this idea.


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