_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
Tarlo
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
|||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...
>
>

_WA_SYS% indexes

Does _WA_SYS%(I understand these are optimizer statistics indexes) indexes i
n
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, do
n'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...
>
>

_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
>
>

[Performance Discussion] To schedule a time for mssql command, which way would be faster a

1. Use mssql server agent service to take the schedule
2. Use a .NET windows service with timers to call SqlClientConnection

above, which way would be faster and get a better performance?I don't think you'll see any performance difference.

but go with agent.|||ok, but will have a difference when busy