Using Scoped Assignments To Show Calendar and Financial Year-To-Date Values In The Same Calculated Measure


Chris Webb's BI Blog

I’ve had a lot of requests for more MDX content on my blog, so here’s something I’ve been meaning to write up for a long time: a worked example of how to use scoped assignments to implement two different types year-to-date calculation on two different hierarchies in the same dimension. Knowledge of how to use scoped assignments is the sign of a true MDX master (you can watch a video of a session I gave on the basics of scoped assignments at SQLBits here if you’re unfamiliar with them) but that’s because they can be very difficult to write and there’s surprisingly little information out there on the internet about them. They are incredibly powerful, though, and often they provide the most elegant and best-performing way to solve a problem.

Let’s start by looking at the Date dimension in the Adventure Works DW sample database, and more specifically the attributes…

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