SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function plus (children 1)
     ExpressionList (children 2)
      Function toDateTime (children 1)
       ExpressionList (children 2)
        Literal UInt64_1234567890
        Literal \'UTC\'
      Function toIntervalHour (children 1)
       ExpressionList (children 1)
        Subquery (children 1)
         SelectWithUnionQuery (children 1)
          ExpressionList (children 1)
           SelectQuery (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
