How much memory usage in sql query ?

If we doing an insert,delete , select or updates, how do we know how much memory sql being use for the operation ? any idea how to check this ?
motioneyeAsked:
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s_chilkuryConnect With a Mentor Commented:
One way is to use PERFMON (SYSMON) to get the values for the above counters alongwith others for further assessment.

To investigate potential memory bottleneck, you can use this query:

SELECT  cntr_value/1024 as 'MBs used'from master.dbo.sysperfinfowhere object_name = 'SQLServer:Memory Manager' and   counter_name = 'Total Server Memory (KB)'

For other counters

SELECT  'ProcedureCache Allocated',     CONVERT(int,((CONVERT(numeric(10,2),cntr_value)* 8192)/1024)/1024)as 'MBs'from master.dbo.sysperfinfowhere object_name = 'SQLServer:Buffer Manager' and   counter_name = 'Procedure cache pages'UNIONSELECT  'Buffer Cache database pages',     CONVERT(int,((CONVERT(numeric(10,2),cntr_value)* 8192)/1024)/1024)as 'MBs'from master.dbo.sysperfinfowhere object_name = 'SQLServer:Buffer Manager' and   counter_name = 'Database pages'UNIONSELECT  'Free pages',     CONVERT(int,((CONVERT(numeric(10,2), cntr_value)* 8192)/1024)/1024)as 'MBs'from master.dbo.sysperfinfowhere object_name = 'SQLServer:Buffer Manager' and   counter_name = 'Free pages'  


Also ... Check the following links:

http://blog.colinmackay.net/archive/2008/07/20/2996.aspx
http://social.msdn.microsoft.com/Forums/en/sqlgetstarted/thread/b860a9c4-27da-4b24-b5bf-097dd99f2629
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