Is there a way to find which database is using how much of total CPU

hi all,
Is there a way to find particularly on database to database like how much of CPU is a particular database using?

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This won't tell you a percent, but you should be able to get an idea of the load for each DB:

--This first thing to check if CPU is at 100% is to look for parallel queries:
-- Tasks running in parallel (filtering out MARS requests below):

* from sys.dm_os_tasks as t 
where t.session_id in (
select t1.session_id 
from sys.dm_os_tasks as t1 
group by t1.session_id 
having count(*) > 1 
and min(t1.request_id) = max(t1.request_id));

-- Requests running in parallel:
select *
from sys.dm_exec_requests as r 
join (
select t1.session_id, min(t1.request_id)
from sys.dm_os_tasks as t1 
group by t1.session_id 
having count(*) > 1 
and min(t1.request_id) = max(t1.request_id)
) as t(session_id, request_id)
on r.session_id = t.session_id 
and r.request_id = t.request_id;

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Microsoft SQL Server 2008

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