Michael Bayer wrote:
> with regards to CAST, the CAST youre seeing is generated by the  
> polymorphic_union function and was needed to support postgres'  
> pickiness with regards to typing.  if some versions of sqlite do not  
> support CAST (which versions ? hopefully its at least a sqlite3...)  
> then the visit_cast() function in the sqlite.py module should be  
> overridden to produce just the straight column name.

 From the changelog, it looks like SQLite 3.2.3 is where CAST was 
introduced.



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