I have searched for this solution for a while and after some guidance from Damon I was able to come up with the following.
This will give you a list of all users that resolved a ticket between the @StartDate and @EndDate. They are listed by email, first, then last name. There are 2 parts to the Time Spent. The columns labeled Days and H:M:S are split because of formating limitations and the last column is a sum of seconds. Feel free to use this as needed and respond if you see areas for improvement or if I have made an error.
DECLARE @StartDate datetime
,@EndDate datetime
SET @StartDate = '2012-07-01'
SET @EndDate = '2013-07-01'
SELECT [u].[PrimaryEmail]
,[u].[FirstName]
,[u].[LastName]
,case
when (SUM(rpt.[TimeSpent]) > 86400) then ((SUM(rpt.[TimeSpent]))/86400)
else '0'
end as [Days]
,CONVERT(varchar(10), DATEADD(second, SUM(rpt.[TimeSpent]), 0), 108) AS [H:M:S]
,SUM(rpt.[TimeSpent]) AS [Seconds]
FROM [ReportProcessTiming] rpt
left join [ReportProcess] rp on rpt.[SessionID] = rp.[SessionID]
left join [ServiceDeskIncidentManagement] sd on rp.ReportProcessID = sd.process_id
inner join [User] u on u.UserID = sd.resolved_by_user_id
where
(rp.Result in('Closed')
or rp.Result in('Subtasks Completed')
or rp.Result in('Success')
)
and rp.ProcessEnded > @StartDate
and rp.ProcessEnded < @EndDate
group by [u].[PrimaryEmail], [u].[FirstName], [u].[LastName]
order by [Days] desc, [H:M:S] desc