SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function toTypeName (children 1)
       ExpressionList (children 1)
        Function initializeAggregation (children 1)
         ExpressionList (children 2)
          Literal \'uniqExactState\'
          Function toNullable (children 1)
           ExpressionList (children 1)
            Literal UInt64_123
      Function toTypeName (children 1)
       ExpressionList (children 1)
        Function arrayReduce (children 1)
         ExpressionList (children 2)
          Literal \'uniqExactState\'
          Function array (children 1)
           ExpressionList (children 1)
            Function toNullable (children 1)
             ExpressionList (children 1)
              Literal UInt64_123