Query Statistics
In addition to the new dynamic management objects, SQL Server 2008 still provides the SET STATISTICS IO
and SET STATISTICS TIME
options, which display the actual logical and physical page reads incurred by a query and the CPU and elapsed time, respectively. These two SET
options return actual execution statistics, as opposed to the estimates returned by SSMS and the SHOWPLAN
options discussed previously. These two tools can be invaluable for determining the actual cost of a query.
In addition to the IO
and TIME
statistics, SQL Server also provides the SET STATISTICS PROFILE
and SET STATISTICS XML
options. These options are provided to display execution plan information while still allowing the query to run.
Get Microsoft® SQL Server 2008 R2 Unleashed now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.