AlterQuery  tp (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_PROJECTION (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 3)
      Identifier type
      Function uniq (children 1)
       ExpressionList (children 1)
        Function cityHash64 (children 1)
         ExpressionList (children 1)
          Identifier device
      Function sum (children 1)
       ExpressionList (children 1)
        Identifier cnt
     ExpressionList (children 1)
      Identifier type
 Identifier tp
