comphead commented on issue #2430:
URL: 
https://github.com/apache/arrow-datafusion/issues/2430#issuecomment-1117140190

   > @comphead I have assigned this to you. I have spent some time working on 
this and keep running into problems with the way we try and compute names and 
determine type information based on an expression and a schema. I will be 
interested to see what you find.
   > 
   > I am now going to start working on #1468 and see where that takes me. If 
the expressions carry their names with them then perhaps it helps with some of 
these issues? I am still learning and exploring ...
   
   @andygrove I'm not sure this will solve all the problems. Currently the test 
like `select count(1), count(1) from t` will fail because the name gets 
generated based on colname + function + types. You may want include some 
increment like position, or reference to current query block hashcode, 
something like that


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