QUESTION
How can we filter a Cognos report to show only data belonging to the resource executing the report?
ANSWER
The current resourceId can be referred to as
#sq($account.parameters.ResourceId)#
So a filter could look like
[ResourceId] = #sq($account.parameters.ResourceId)#
and then it would only show data for the resource running the report. [ResourceId] is just an example here, it could be [createdby] or other fields that are part of the report and that contain a resourceId.