SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function tupleElement (children 1)
     ExpressionList (children 3)
      Function array (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList (children 1)
          Function tuple (children 1)
           ExpressionList (children 2)
            Function count (children 1)
             ExpressionList (children 1)
              Literal \'2147483646\'
            Literal UInt64_1
      Literal \'aaaa\'
      Literal Array_[Array_[UInt64_1, UInt64_2, UInt64_3]]
