query plan caching?

SQL Server has the concept of caching the query plan. Parameterized queries can take advantage of this feature.

I'm wondering if there's an equivalent feature in SSAS. If I use MDX parameters (i.e. using @.Param in the query and setting the Parameters object of the AdomdCommand object) and run the same query twice with similar parameter values, will SSAS be able to reuse the query plan at all?

What I'm wondering is whether it is better (a) to use parameters and then StrToSet to convert those parameters into MDX objects... OR (b) to just run dynamic MDX with no parameters. (Yes, I'm referring to how Reporting Services does MDX queries. Wondering if it would be worth suggesting to the SSRS team that they take the parameter values and build dynamic MDX instead of using MDX parameters.)

There is no equivalent for cached query plans in the SSAS 2005 version.

> What I'm wondering is whether it is better (a) to use parameters and then StrToSet to convert those parameters into MDX objects... OR (b) to just run dynamic MDX with no parameters.

In SSAS 2005, building MDX on the fly is always better than using StrToSet and parameters.

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Thanks Mosha. That answered my question. I reported this as a suggestion for Katmai SSRS:

https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=263472

|||I diagree that this is SSRS issue. SSRS is absolutely correct using StrToSet( @.param, CONSTRAINED ) for many reason, one being security. This should be reported as suggestion for Katmai SSAS - to optimize StrToXXX( , CONSTRAINED) family of functions.