alamb commented on issue #1468:
URL: https://github.com/apache/datafusion/issues/1468#issuecomment-2308899611

   > one thing is how easy it is to get there (i get that likely pretty hard 
per "alias is used widely")
   
   I agree
   
   > and the other is whether we would want to get there at all (is this the 
right direction)
   
   I don't have any strong feeling in this regard -- in general `Expr::Alias` 
seems to work ok, though there are some places where having to handle it (in 
filters, etc) have caused some issues in the past (which is why there is 
`Expr::unalias` and various other methods)


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