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spilling the beans

Username and StrToMember

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It returns the TM1 username (or Windows domain username depending on the security system being used – for example, “GER\JEREMY”) of the user who runs the query. Note that you may need to give all users Read access to the }Clients dimension and all its elements.

It is not documented in the help file as being officially supported by TM1 but it is a standard MDX feature that appears to work in v8.3. However, since 8.4.3 until it is reported as failing to automatically update when a new user uses the subset. This can be circumvented by running a frequent TI process that uses the subset as its datasource and the following line in Prolog (Workaround reported by Steve Vincent on the Applix Forum, 2nd August 2006):
With this “micro-process” workaround set to run every few minutes a pseudo-dynamic result is possible. An actual solution to the problem should be tested for in your version if it is 9.1 or later.

To save a dynamic subset it needs to be set up on the }Clients dimension – choose View / Control Objects in Server Explorer to see this dimension. Once you have saved the public subset (e.g. as “Current User”) you can turn this option off again.

As an alternative to the above method, and as a way of including the current username directly in queries use the StrToMember function which converts a plain string into a valid MDX member reference.
{StrToMember("[}Clients].["+USERNAME+"]") }


Either way the subset can then be referred to on Excel spreadsheets, VBA processes and, as it is simply a standard TM1 subset, in TM1 Websheets.


As a non-MDX alternative v9.1.2.49 introduced a =TM1User(servername) worksheet function which could be used in some circumstances.

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