SELECT TOP(10) mc.[type] AS [Memory Clerk Type], 
       CAST((SUM(mc.pages_kb)/1024.0) AS DECIMAL (15,2)) AS [Memory Usage (MB)] 
FROM sys.dm_os_memory_clerks AS mc WITH (NOLOCK)
GROUP BY mc.[type]  
ORDER BY SUM(mc.pages_kb) DESC OPTION (RECOMPILE);

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