By Tomislav Piasevoli
This ebook deals sensible, task-based, and instantly usable recipes overlaying quite a lot of MDX calculations and queries. as well as its cookbook variety, which guarantees the options are provided in a transparent step by step demeanour, the reasons are performed in nice aspect, which makes it solid studying fabric for everybody who has event in MDX and needs to enhance. The booklet is designed in this type of approach so you might learn it bankruptcy by means of bankruptcy or consult with recipes in no specific order. despite the fact that, a few of the recipes rely on every one one other. whilst this is often the case, you'll be notified. The ebook is targeted on Microsoft SQL Server 2008 R2 research providers, yet lots of the strategies and clarification also are acceptable to past types of Microsoft SQL Server research providers. while you're a Microsoft SQL Server research companies developer and wish to enhance your strategies utilizing MDX, then this ebook is for you. The e-book assumes you might have a operating wisdom of MDX and a uncomplicated realizing of dimensional modeling and dice layout.
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Additional resources for MDX with Microsoft SQL Server 2008 R2 Analysis Services Cookbook
30 Chapter 1 Getting ready Start a new query in SSMS and check that you're working on the right database. & ) The query returns fiscal months on rows and two measures: a count of customers and their growth compared to the previous month. Mountain bikes are in slicer. Now let's see how we can get the number of days the growth was positive for each period. How to do it… Follow these steps to reduce the initial set: 1. Create a new calculated measure in the query and name it Positive growth days.
One by one, each week of the year in context is passed inside the definition of this measure and evaluated. In case of a leaf member, the Order Count measure would be evaluated and returned to the outer evaluation context. Otherwise, another turn of the child member's evaluation would occur. And so on until we would finally hit leaf-level members. 39 Elementary MDX Techniques In this example, weeks are the leaf level of the hierarchy being used in the query. They would be evaluated using the True part of the condition.
2. Expand the Discount Percent hierarchy and its level. 3. Take the first 3 members (with the names 0, 2 and 5) and drag them one by one below the query, then form a set of them using curly brackets. 4. Expand the query by adding the WHERE part. 5. Add the set with those 3 members using a minus sign in front of the set. E-2] } ) 24 Chapter 1 6. Execute the query and see how the results change. Double-click each promotion and verify that no promotion has discount percent equal to 0, 2 or 5 anymore.