InsertQuery   (children 2)
 Function file (children 1)
  ExpressionList (children 1)
   Literal \'i16.orc\'
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 1)
    ExpressionList (children 1)
     Function CAST (alias x) (children 1)
      ExpressionList (children 2)
       Function materialize (children 1)
        ExpressionList (children 1)
         Literal Int64_-32768
       Literal \'Int16\'
