troubleshooting Question

Any difference in performance for the following two queries in SQL Server? Thanks.

Avatar of thomaszhwang
thomaszhwangFlag for United States of America asked on
Microsoft SQL ServerMicrosoft SQL Server 2008SQL
5 Comments3 Solutions346 ViewsLast Modified:
SELECT
	*
FROM
(
	SELECT
		ProductId
	FROM
		dbo.Tracking_Product WITH(NOLOCK)
) AS refTable
WHERE
	refTable.ProductId = 919213

and

SELECT
	ProductId
FROM
	dbo.Tracking_Product WITH(NOLOCK)
WHERE
	ProductId = 919213
Join the community to see this answer!
Join our exclusive community to see this answer & millions of others.
Unlock 3 Answers and 5 Comments.
Join the Community
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 3 Answers and 5 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros