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    <p>Sort of. Check this query out:</p> <pre><code>SELECT total_worker_time/execution_count AS AvgCPU , total_worker_time AS TotalCPU , total_elapsed_time/execution_count AS AvgDuration , total_elapsed_time AS TotalDuration , (total_logical_reads+total_physical_reads)/execution_count AS AvgReads , (total_logical_reads+total_physical_reads) AS TotalReads , execution_count , SUBSTRING(st.TEXT, (qs.statement_start_offset/2)+1 , ((CASE qs.statement_end_offset WHEN -1 THEN datalength(st.TEXT) ELSE qs.statement_end_offset END - qs.statement_start_offset)/2) + 1) AS txt , query_plan FROM sys.dm_exec_query_stats AS qs cross apply sys.dm_exec_sql_text(qs.sql_handle) AS st cross apply sys.dm_exec_query_plan (qs.plan_handle) AS qp ORDER BY 1 DESC </code></pre> <p>This will get you the queries in the plan cache in order of how much CPU they've used up. You can run this periodically, like in a SQL Agent job, and insert the results into a table to make sure the data persists beyond reboots.</p> <p>When you read the results, you'll probably realize why we can't correlate that data directly back to an individual database. First, a single query can also hide its true database parent by doing tricks like this:</p> <pre><code>USE msdb DECLARE @StringToExecute VARCHAR(1000) SET @StringToExecute = 'SELECT * FROM AdventureWorks.dbo.ErrorLog' EXEC @StringToExecute </code></pre> <p>The query would be executed in MSDB, but it would poll results from AdventureWorks. Where should we assign the CPU consumption?</p> <p>It gets worse when you:</p> <ul> <li>Join between multiple databases</li> <li>Run a transaction in multiple databases, and the locking effort spans multiple databases</li> <li>Run SQL Agent jobs in MSDB that "work" in MSDB, but back up individual databases</li> </ul> <p>It goes on and on. That's why it makes sense to performance tune at the query level instead of the database level.</p> <p>In SQL Server 2008R2, Microsoft introduced performance management and app management features that will let us package a single database in a distributable and deployable DAC pack, and they're promising features to make it easier to manage performance of individual databases and their applications. It still doesn't do what you're looking for, though.</p> <p>For more of those, check out the <a href="http://www.toadworld.com/platforms/sql-server/w/wiki/10040.transact-sql-code-library.aspx" rel="noreferrer">T-SQL repository at Toad World's SQL Server wiki (formerly at SQLServerPedia)</a>.</p> <p><em>Updated on 1/29 to include total numbers instead of just averages.</em></p>
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    1. COPardon my ignorance, but what are the units of AvgCPU and AvgDuration?
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    2. COMilliseconds for both - milliseconds of CPU time, and milliseconds of duration. They can be different because queries can wait on IO, locks, clients, etc. I'll modify the query to grab totals too. (I was going to say foot-pounds but I couldn't keep a virtual straight face.)
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