EXEC WITH RECOMPILE

Hi,
It seems that when you execute an SP along with WITH RECOMPILE option, the
SP is recompiled for that particular execution (only) and the old plan is
not replaced with new one in ProcCache. Is it correct or there's something
wrong with my experimentations?!
Thanks in advance,
LeilaThat's the way it works. Consider an EXEC WITH RECOMPILE to be an
"exception" - a one-time use of the plan. If you want a "permanent' new
plan, check out sp_recompile in the BOL.
Tom
----
Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
SQL Server MVP
Toronto, ON Canada
.
"Leila" <Leilas@.hotpop.com> wrote in message
news:u6K4wp0VGHA.1204@.TK2MSFTNGP12.phx.gbl...
Hi,
It seems that when you execute an SP along with WITH RECOMPILE option, the
SP is recompiled for that particular execution (only) and the old plan is
not replaced with new one in ProcCache. Is it correct or there's something
wrong with my experimentations?!
Thanks in advance,
Leila|||Per Books Online:
RECOMPILE
Indicates that the Database Engine does not cache a plan for this procedure
and the procedure is compiled at run time. This option cannot be used when
FOR REPLICATION is specified. RECOMPILE cannot be specified for CLR stored
procedures.
To instruct the Database Engine to discard plans for individual queries
inside a stored procedure, use the RECOMPILE query hint. For more
information, see Query Hint (Transact-SQL). Use the RECOMPILE query hint whe
n
atypical or temporary values are used in only a subset of queries that belon
g
to the stored procedure.
"Leila" wrote:

> Hi,
> It seems that when you execute an SP along with WITH RECOMPILE option, the
> SP is recompiled for that particular execution (only) and the old plan is
> not replaced with new one in ProcCache. Is it correct or there's something
> wrong with my experimentations?!
> Thanks in advance,
> Leila
>
>|||"Leila" <Leilas@.hotpop.com> wrote in message
news:u6K4wp0VGHA.1204@.TK2MSFTNGP12.phx.gbl...
> Hi,
> It seems that when you execute an SP along with WITH RECOMPILE option, the
> SP is recompiled for that particular execution (only) and the old plan is
> not replaced with new one in ProcCache. Is it correct or there's something
> wrong with my experimentations?!
A quick experiments with BOL confirms your findings:
WITH RECOMPILE
Forces a new plan to be compiled, used, and discarded after the module is
executed. If there is an existing query plan for the module, this plan
remains in the cache.
Use this option if the parameter you are supplying is atypical or if the
data has significantly changed. This option is not used for extended stored
procedures. We recommend that you use this option sparingly because it is
expensive.
David|||Thanks every body :-)
"Tom Moreau" <tom@.dont.spam.me.cips.ca> wrote in message
news:%23YCk3t0VGHA.2760@.TK2MSFTNGP11.phx.gbl...
> That's the way it works. Consider an EXEC WITH RECOMPILE to be an
> "exception" - a one-time use of the plan. If you want a "permanent' new
> plan, check out sp_recompile in the BOL.
> --
> Tom
> ----
> Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
> SQL Server MVP
> Toronto, ON Canada
> .
> "Leila" <Leilas@.hotpop.com> wrote in message
> news:u6K4wp0VGHA.1204@.TK2MSFTNGP12.phx.gbl...
> Hi,
> It seems that when you execute an SP along with WITH RECOMPILE option, the
> SP is recompiled for that particular execution (only) and the old plan is
> not replaced with new one in ProcCache. Is it correct or there's something
> wrong with my experimentations?!
> Thanks in advance,
> Leila
>