Ted, this is why your participation in Drill is such a gift: cast push-down is 
an elegant, simple solution that even works in views. Beautiful.

- Paul


    On Friday, April 6, 2018, 11:35:37 AM PDT, Ted Dunning 
<ted.dunn...@gmail.com> wrote:  
 On Thu, Apr 5, 2018 at 9:43 PM, Paul Rogers <par0...@yahoo.com.invalid>

> Great discussion. Really appreciate the insight from the Drill users!
> To Ted's points: the simplest possible solution is to allow a table
> function to express types. Just making stuff up:
> SELECT a FROM schema(myTable, (a: INT))

Why not just allow cast to be pushed down to the reader?

Why invent new language features?

Or, really ugly, a session option:
> ALTER SESSION SET schema.myTable="a: INT"

These are a big problem.

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