SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 4)
    Function cityHash64 (alias x1) (children 1)
     ExpressionList (children 3)
      Literal UInt64_1
      Literal UInt64_2
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'\'
    Function cityHash64 (alias x2) (children 1)
     ExpressionList (children 2)
      Literal Tuple_(UInt64_1, UInt64_2)
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'\'
    Function cityHash64 (alias x3) (children 1)
     ExpressionList (children 2)
      Literal UInt64_1
      Function tuple (children 1)
       ExpressionList (children 2)
        Literal UInt64_2
        Function materialize (children 1)
         ExpressionList (children 1)
          Literal \'\'
    Function cityHash64 (alias x4) (children 1)
     ExpressionList (children 1)
      Function tuple (children 1)
       ExpressionList (children 3)
        Literal UInt64_1
        Literal UInt64_2
        Function materialize (children 1)
         ExpressionList (children 1)
          Literal \'\'