_WA_SYS% indexes

Does _WA_SYS%(I understand these are optimizer statistics indexes) indexes in
sysindexes impact performance on update, delete or insert?
Any answer will be helpful.
Thanks
TarloNo, These are not indexes, they don't have a b-tree associated with them, don't store any data.
--
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
http://www.sqlug.se/
"Tarlo" <Tarlo@.discussions.microsoft.com> wrote in message
news:500DE04C-0239-49B3-BD6C-6B90D44D6C1A@.microsoft.com...
> Does _WA_SYS%(I understand these are optimizer statistics indexes) indexes in
> sysindexes impact performance on update, delete or insert?
> Any answer will be helpful.
> Thanks
> Tarlo|||Thanks a bunch it helps.
Regards
Tarlo
"Tibor Karaszi" wrote:
> No, These are not indexes, they don't have a b-tree associated with them, don't store any data.
> --
> Tibor Karaszi, SQL Server MVP
> http://www.karaszi.com/sqlserver/default.asp
> http://www.solidqualitylearning.com/
> http://www.sqlug.se/
>
> "Tarlo" <Tarlo@.discussions.microsoft.com> wrote in message
> news:500DE04C-0239-49B3-BD6C-6B90D44D6C1A@.microsoft.com...
> > Does _WA_SYS%(I understand these are optimizer statistics indexes) indexes in
> > sysindexes impact performance on update, delete or insert?
> >
> > Any answer will be helpful.
> >
> > Thanks
> >
> > Tarlo
>
>