SELECT
CAST(DATEDIFF(SECOND, Start.WorkQueueStartWorkDate, Finish.WorkQueueEndWorkDate) / 3600 AS varchar(3)) +
RIGHT(CONVERT(char(8), Finish.WorkQueueEndWorkDate - Start.WorkQueueStartWorkDate, 8), 6)
from (
select CAST('20121216 20:57:01.293' AS datetime) AS WorkQueueStartWorkDate
) AS start
cross join (
select CAST('20121218 01:26:57.573' AS datetime) AS WorkQueueEndWorkDate
) as finish
SQL DBA,SQL Server MVP(07, 08, 09) A socialist is someone who will give you the shirt off *someone else's* back.