Possible to check how much time an update statement on a table would take ?

Hello @all
I have a table with a fragmented Index, the table has an actula "user_updates" from 226'699.
How can i find out how much time an update on this table takes ?
i would like to check if there is any performance increase when i regroup the index (rebuild), cause the index has a fragementation of 85% now... (or should i delete the index completely) cause there are no user_seeks... only user_updates on the table...
and i thought that indexes only makes sense if users are reading from the table... am i wrong ? (cause on every update from the table, the index (indexes) have to be updated too...
Thanks and Regards
Dominic

Rebuilding the index will not likely result in a modification be quicker. At least not more than marginal. In fact, it might wven be slower, since if you currently have space on the index page for the new row and then rebuild so you *don't* have space then
the index rebuild will make that update be slower (at least for the cases where you get page splits).
However if the index isn't used to find rows (any of the other three columns), then you have an index which only cost you and doesn't help you!
Tibor Karaszi, SQL Server MVP |
web | blog
Tibor, check out this forum thread:
http://social.technet.microsoft.com/Forums/sqlserver/en-US/64ad4f52-2fd8-4266-b4a4-5657c8870246/needed-more-answerers?forum=sqlgetstarted
Ed Price, Power BI & SQL Server Customer Program Manager (Blog,
Small Basic,
Wiki Ninjas,
Wiki)
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