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