Dynamic SQL Update - sql-server

Question

I have the following SQL Server 2008 table:
ID Destination Last Result
01 [phone] Disconnect
02 [phone] Duplicate
03 [phone] Duplicate
04 [phone] Duplicate
05 [phone] Duplicate
06 [phone] Busy
07 [phone] Duplicate
08 [phone] No Answer
09 [phone] Duplicate
My goal is to dynamically set the 'Last Result' column for all matching phone numbers. So, in the example table above for Destination([phone]), the result for all matching phone numbers(555) 319-5170) with the value 'Disconnect'. The sample update statement is below:
UPDATE C
SET [Last Result] = (
SELECT Destination
FROM Call
WHERE [Last Result] NOT IN ('Duplicate','No Phone #')
GROUP BY Destination
HAVING COUNT(Destination) > 1)
FROM Call C
INNER JOIN
(
SELECT Destination
FROM Call
WHERE [Last Result] NOT IN ('Duplicate','No Phone #')
GROUP BY Destination
HAVING COUNT(Destination) > 1
) Dup ON Dup.Destination = C.Destination
WHERE C.[Last Result] NOT IN ('Duplicate','No Phone #')
But I am getting an error:
Msg 512, Level 16, State 1, Line 1
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
**EXPECTED OUTPUT**:
ID Destination Last Result
01 [phone] Disconnect
02 [phone] Disconnect
03 [phone] Disconnect
04 [phone] Duplicate
05 [phone] Duplicate
06 [phone] Busy
07 [phone] Busy
08 [phone] No Answer
09 [phone] No Answer
Thanks in advance for any assistance with a possible solution.

Answer 1

You can look up the first Last Result with the row_number() window function. However, there has to be a way to define "first". In the example, I'm assuming you have an identity column:
update t1
set [Last Result] = t2.[Last Result]
from Table1 t1
join (
select row_number() over (partition by Destination
order by Id) as rn
, *
from Table1
) t2
on t1.Destination = t2.Destination
and t2.rn = 1;
Example at SQL Fiddle.
If you do not have an identity column, please update the question with how you define "first". There could be a CreateDt column for example.