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So, whenever you refresh your model if new records have been changed in or added to the source of the lookup query, your table will automatically include the new values in the filter step in Power Query. It is quite simple, you just need to use the name of the query. So, if I want to reference another query, in a new blank query, then the Power Query M scripts would look like below:. Referencing a column is also quite simple.

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When you reference a column you need to mention the referencing query name, explained above, along with the column name in brackets. The result is a list of values of that particular column. The Time dimension I explained was in Minutes.

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In this post I show you simple way to create Time dimension supporting Seconds. If you need to add time bands time buckets check this out for more details. In real world SSAS Tabular projects, you need to run many different testing scenarios to prove your customer that the data in Tabular model is correct.

If you are running a Tabular Model on top of a proper data warehouse then your life would be a bit easier than when you build your semantic model on top of an operational database. However it would be still a fairly time-consuming process to run many test cases on Tabular Model, then run similar tests on the data warehouse and compare the results. So your test cases always have two sides, one side is your source database that can be a data warehouse and the other side is the Tabular Model.

There are many ways to test the system, you can browse your Tabular Model in Excel, connecting to your Data Warehouse in Excel and create pivot tables then compare the data coming from Tabular Model and the data coming from the Data Warehouse. But, for how many measures and dimensions you can do the above test in Excel?

If your source database is a SQL Server database, then you need to run T-SQL queries on the database side then match the results of both sides to prove the data in Tabular Model is correct. Straight away, this is going to be a long post, so you can make or take a cup of coffee while enjoying your reading. While I will not cover the other side, the source or the data warehouse side, it is worth to automate that part too as you can save heaps of times.

Perhaps it is not perfect, but, it is a good starting point. If you have a better idea it would be great to share it with us in the comments section below this post. I want to generate and run DAX queries and capture the results.

Transact SQL Desk Reference For Microsoft SQL Server

The first step is to get all measures and their relevant dimensions, then I slice all the measures by all relevant dimensions and get the results. In addition, the concepts of SQL are laid out in a simple, concise language and instructions to help you learn the steps properly. If you head over to Amazon you will see great reviews for one of our favorite SQL guides for beginners.

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