SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function murmurHash2_64 (children 1)
     ExpressionList (children 1)
      Function materialize (children 1)
       ExpressionList (children 1)
        Function map (children 1)
         ExpressionList (children 6)
          Literal UInt64_1
          Literal \'a\'
          Literal UInt64_2
          Literal \'b\'
          Literal UInt64_3
          Literal \'c\'