InsertQuery   (children 2)
 Function file (children 1)
  ExpressionList (children 1)
   Literal \'u64.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 UInt64_9223372036854775808
       Literal \'UInt64\'
