How to force some commands to run by using certain index

Hi,
Can i force some of the update command by using the
index that i want. Normally when we update something, we
will let sql to select the index, how can i choose the
index that i want in the transact-sql statement?
Can anyone teach me and give me an example?
Thanks a lot!
regards,
florence> Can i force some of the update command by using the
> index that i want. Normally when we update something, we
> will let sql to select the index, how can i choose the
> index that i want in the transact-sql statement?
Yes, you can use optimizer hints. But a common advice is to do everything
else before using hnts. Check how to tune queries, including optimzer hints,
at
http://www.microsoft.com/technet/prodtechnol/sql/70/books/inside14.mspx#EDAA.
--
Dejan Sarka, SQL Server MVP
Associate Mentor
www.SolidQualityLearning.com