We are trying to quantify the impact of our BI efforts and visualizations. We would like to have one of our KPI's be "% monthly active users". That is, what percentage of existing user accounts has logged in during a given month. Drilling down to sheet level would give a pointer as to what content and visualizations work better.
I've managed to connect to Tableau Servers built-in PostGreSQL. However, I am only permitted access to tables prefixed with underscore. Some of the fields i typically need are only present in the tables that I cannot access. For the active users KPI I would need login times by account, which is available,but also account creation date, which is not.