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The newest PPTs from the SharePoint Conference 2014 and the just-started Microsoft Business Analytics 2014 Roadshow, covering Power BI and Microsoft SQL Server 2014, and Power Query, Power Pivot, Power Map, Power View, as well as presentations from PASS 2014 about Data Science with SQL Server and R are now available!

You will also find presentations from the PASS Rally 2013, European and US SharePoint Conference 2013 and the Microsoft Business Analytics Roadshow 2013, including: HDInsight and Apache Hadoop, SQL Server 2012 SP1, SharePoint 2013, and Office 2013 BI with Power View and PowerPivot, and plenty of older, but still useful conference decks.

How to Make Enterprise Dashboards in Excel

Carmel Shows a Finished Enterprise Dashboard Made in Excel

Carmel Gunn is a Data Management Specialist from Prodata. Let her show you Excel as an enterprise-grade BI client in this short video, in which she builds a fully fledged enterprise dashboard—in under 30 minutes!—and then shares it with others, even on mobile devices, such as an iPad, iPhone, Android, or a Surface.

DAX in Action!

DAX Formula for Counting New Customers Using CALCULATE, FILTER, and COUNTROWS

See the power of Data Analysis Expression (DAX) language in BI Semantic Model (BISM) with PowerPivot and SQL Server Data Tools (SSDT) in this free, 20-minute video by Alberto Ferrari. In the demo shown in this video we create a simple data model, based on the AdventureWorks sample database. We show you how to write a challenging formula: counting how many new and returning customers make a purchase every month. If you would like to gain DAX skills, this video, first one in our series focusing on DAX, shows you what could be accomplished without even having to change the model of your data.

MDX Basic Concepts

MDX Basic Concepts: Cubes and Tuples

MDX, or Multidimensional Expressions, has the reputation of being a difficult language, but this reputation is undeserved, even if the concepts it uses are different from those of relational databases. In this free, 29-minute video, part of our series on MDX, world-renowned SQL Server Analysis Services expert Chris Webb of Crossjoin Consulting and Technitrain introduces three basic concepts: the use of unique names to refer to objects, tuples and how they are used to return values from a cube, and sets, which are ordered lists. Understanding these ideas will give you the theoretical foundation you need to write your own MDX calculations, and queries, for SSAS and PowerPivot.

Apache Hadoop, Big Data, Microsoft

Apache Hadoop technologies integrate with the entire Microsoft Application Platform on many levels. The purpose of this article is to outline some of those integration points, and to outline the possibilities of solutions and applications that this combination enables. Rafal discusses the business potential of this technology in some detail, focussing on both already-tested, and the more future-oriented applications, at all times trying to answer the question “Why should we use Apache Hadoop in conjunction with the Microsoft platform?”.

Power View and BISM: A Short Introduction

Power View Scatter Plot (Animated Bubble Chart)

Power View, part of SQL Server 2012 Reporting Services, and the BI Semantic Model (BISM) are briefly introduced in this 10-minute video. The demo shows how to create the animated bubble chart (scatter plot) from your data.

What Are Decision Trees?

What are Decision Trees?

A decision tree is a tree of nodes. Each node represents an input value that makes the most profound difference to an output that you wish to study. This free 10-minute video by Rafal introduces this powerful analytical tool, and explains the concepts while analysing simple retail data in a demo.

Introduction to Data Mining with Microsoft SQL Server

If you ever wanted to learn data mining, and predictive analyticss, start right here! Microsoft SQL Server comes with easy-to-use data mining tools, requiring very little formal knowledge of the subject to get started. This free data mining video tutorial is the first module, in this series, dedicated to explaining how to perform advanced analytics of your own data. In this video we explain: what is data mining, why would you use it, and how it is related to Big Data analytics, and we illustrate it with two short demos, showing Outlier Detection and Market Basket Analysis.

Microsoft SQL Server 2012 Business Intelligence (Article)

SQL Server 2012 Logo

This article, by Rafal, discusses pivotal BI aspects of Microsoft SQL Server 2012: BI Semantic Model (BISM), PowerPivot 2, Data Analysis Expressions (DAX), the future of OLAP Cubes and MDX (Multidimensional Expressions), and, briefly, it touches on the role of the Cloud for analytics.

DAX: Calculated Columns vs. Measures

DAX Formula for Classifying Data Using a Calculated Column

Learn the difference between calculated columns and measures in Data Analysis Expression (DAX) in this free, 10-minute video by Marco Russo, a well-known book author on the subject. Calculated columns are calculated row-by-row when the content of a table is refreshed, whereas measures are computed at query time, by aggregating rows. However, they have different uses, including filtering or classifying data, so you often need to make a trade-off between purpose and performance.

Introduction to SQL Server 2012 Business Intelligence (Video) (requires full access membership)

Big Data

In this first, 45-minute module of our training course introducing Microsoft Business Intelligence technologies, we focus on Microsoft SQL Server 2012. The main objective of this video is to introduce the big picture of Microsoft’s data platform engine, released in 2012. This module discusses its 10 key BI innovations: BI Semantic Model (BISM), Analysis Services Tabular Mode, PowerPivot for SQL Server 2012, Power View, Self-Service Data Alerts, Big Data and Apache Hadoop integration, Columnstore Indexes (xVelocity for Data Warehousing), Spatial Data, Unstructured Data, and, briefly, Data Quality Services. Through a number of slides, graphics, and a short demo showing Power View in PowerPoint, you will learn how to take advantage of the newest abilities of SQL Server in your own BI projects. If you would like to deepen your skills, make sure you also watch the remaining modules in this series, which focus on: the new release of PowerPivot for SQL Server 2012, Power View, and the BI Semantic Model and Analysis Services Tabular Mode.

Dashboards and Scorecards with Microsoft SQL Server and SharePoint Server

Dashboards and Scorecards Using Microsoft SharePoint Server and SQL Server

From an attractive, composite dashboard consisting of performance management scorecards, and reports, to the highly visual PivotViewer, this video introduces the world of dashboards running on Microsoft BI platform, focussing on SharePoint Server PerformancePoint Services and SQL Server.

Geospatial Data Exploration with Excel Power View and SharePoint

Bing Map Showing Data from Excel Using Power View

Create zoomable world maps that show your data using Power View in Excel 2013, and Bing! Rafal also shows geospatial aggregations, and a SharePoint dashboard with an animated bubble chart, in this free, 16-minute video.

Querying with DAX (requires full access membership)

Querying with Data Analysis Expressions using DAX Studio by Marco Russo

Data Analysis Expressions (DAX) is useful for querying data, in addition to its more common use for defining measures and calculated columns in PowerPivot or tabular models. Marco Russo explains the tools, including DAX Studio, and the syntax necessary for writing DAX queries in this 46-minute video, containing 7 detailed demos, part of our series on DAX. You will learn about the EVALUATE statement, how to control projection of data by using ADDCOLUMNS and SUMMARIZE functions, how to use the ROW function to test new measures for your data model, and how to use DAX measures within MDX queries. By learning these concepts you will be able to use DAX queries as a data source for your reports, and for Excel tables.

Introduction to BI Semantic Model & SQL Server 2012 Analysis Services (requires full access membership)

Using SQL Server Data Tools to Create a New Tabular Project

The fourth module of this course focuses on the new BI Semantic Model (BISM), and its implementation as a tabular model hosted by SQL Server 2012 Analysis Services (SSAS) Tabular Mode. This 1 hour 20 minute video includes discussions, slides, and diagrams, and an in-depth, 35 minute demo block, showing you the key BISM and SSAS Tabular Mode principles in 13 detailed, hi-resolution demonstrations, which you can select, follow, pause and repeat at any time, by using Jump to a chapter links.

DAX: The CALCULATE Function (requires full access membership)

DAX: CALCULATE Function with ALL and FILTER

CALCULATE is the most important function in Data Analysis Expression (DAX) because it allows you to manipulate filter context, which is necessary for building real-world calculations. Let Marco Russo explain it to you in this 47-minute video tutorial that contains 5 detailed demos. You will learn: when to use CALCULATE, its syntax, how to manipulate filters at column granularity level, and how to transform a row context into a filter context. Learning these concepts will enable you to write advanced calculations in DAX, and it will make following the remaining modules of our DAX video series easier.

Introduction to DAX (requires full access membership)

Using Aggregation Iterators (SUMX) to Calculate Gross Profit Margins

Introduce yourself to Data Analysis Expression (DAX) by learning the syntax and the fundamental functions of this language in this 40-minute video by Marco Russo and Alberto Ferrari, world-known SSAS experts. DAX is the language used to define calculation expressions in PowerPivot. It works in Excel 2010, and it is in the core of Excel 2013. DAX is also the programming language for Microsoft SQL Server Analysis Services Tabular Models. It has a simple syntax that will be instantly familiar to Excel users, because it replicates Excel syntax wherever possible. Nevertheless, DAX also introduces many new functions, in order to express tabular and columnar concepts, which are not part of Excel workbooks—Excel is focused on cells and ranges, while DAX focuses on entire columns and tables. By watching this video, which includes 9 demos, you will become familiar with the basic syntax of DAX, and you will be ready to write your first calculations.

Introduction to PowerPivot for SQL Server 2012 (requires full access membership)

The second module in this online training course, offers a 1 hour introduction to PowerPivot for SQL Server 2012, sometimes referred to as PowerPivot “2”. This module is of importance to those who need to model tabular data for analytics, or who simply want to explore a data set, before making a decision if it is worthwhile analysing it further. Also, if you plan on learning about BI Semantic Model, you need to know about PowerPivot “2”, as Tabular Mode of SSAS, and BI Semantic Model, make extensive use of the new PowerPivot features, extending them to enterprise needs. This module is presented as a series of slides, graphics, discussions, and 15 demos, recorded in high-resolution, so that you can follow the steps yourself.

Data Mining Concepts and Tools (requires full access membership)

This 50-minute video introduces the fundamental concepts of Data Mining, a powerful analytical technology. You will learn about the process of data mining and the SQL Server Analysis Services (SSAS) Data Mining architecture, and its key concepts, including: Cases, representing your data, Mining Structures, used to describe Cases, Mining Models, and Mining Algorithms, which extract patterns hiding in your data. We briefly introduce 9 of the Microsoft data mining algorithms: Naïve Bayes, Clustering, Decision Trees, Association Rules, Sequence Clustering, Neural Networks, Logistics Regression, Linear Regression, and Time Series. You will also learn about Column Content and Data Types, Discretization, and data Distributions, as you follow the module and the 5 demos shown in it.

Books about BI

This article lists books about BI, Statistics, Data Warehousing and Management, which we recommend in conjunction with our courses and seminars.

Why Cluster and Segment Data?

Cluster-based data segmentation

Clustering is a popular data mining technique, often used for segmentation. In this short, 9–minute video, Rafal introduces these concepts, focusing on the reasons why it is useful to use clustering to find non-traditional segments. In the demo, you will see a clustering model, and we will use it to categorise new data in Excel.

Introduction to Power View in SQL Server 2012 Reporting Services (requires full access membership)

Introduction to SQL Server 2012 Reporting Services Power View

The third module of this course introduces the newest addition to the Microsoft Business Intelligence platform: Power View, which is part of SQL Server 2012 Reporting Services. You will hear explanations of the fundamental concepts of Power View, such as Measures, and you will see all of its key features, including data visualizations, such as the animated Bubble Charts, in 17 hi-def easy-to-follow demos. You will hear how to source data for Power View, and how to share your reports by exporting them to PowerPoint, as a presentation, with slides that literally come alive in front of your audience!

Predictive Analysis with Microsoft SQL Server & Excel

Market Basket Analysis Using Microsoft SQL Server 2008 R2 and Excel

Predictive Analysis is an advanced form of Business Intelligence, which uses Data Mining. In this short demo you will see how Microsoft Excel makes it easy to use.

PI: Performance Intelligence

What is the purpose of Business Intelligence? Wouldn’t the term Performance Intelligence make more sense, especially if we consider that BI is perfectly useful for non-business domains such as: government, education, military, healthcare, and many others? This article discusses Rafal’s experience working with BI as a tool for achieving better performance, even if that performance is not directly related to a financial perspective of an organisation.

Data Mining Model Building, Testing and Predicting with Microsoft SQL Server and Excel (requires full access membership)

Data Mining Model Building, Testing, and Predicting Using Microsoft SQL Server and Excel

This 1-hour-20-minute video discusses the entire lifecycle of a Data Mining Model. You will learn how to build models and mining structures, starting by creating a Data Source and Data Source View, how to train it with your data, and how to view the results. Most importantly, you will also understand how to verify a model’s validity, by applying tests of accuracy, reliability, and usefulness. You will understand, and you will also see being used, such key verification techniques as: a Lift Chart, Profit Chart, Classification Matrix, and Cross Validation. Finally, you will see how to predict unknown outcomes using your model. Not only will you hear in-depth explanations, but you will also see 11 live demos, showing you all the aspects of working with Data Mining Models, including using SQL Server Data Tools (SSDT), and Microsoft Excel, for predicting (scoring) sales to future, potential customers, based on their demographic characteristics, and their shopping habits, just discovered using a Decision Tree, and a simple mining model.

Multidimensional Analysis with Microsoft Excel and SQL Server

Multidimensional Analysis with Microsoft Excel and SQL Server

For most people, the easiest tool for opening and navigating a multidimensional (OLAP) cube is Microsoft Excel. In this short demo you can also see how to perform basic slice-and-dice analysis, drill into and filter using dimensions, and summarise trends with a sparkline.

Microsoft Business Analytics with Office 2013, SharePoint 2013 and SQL Server 2012 (requires full access membership)

Microsoft Business Analytics with Office 2013, SharePoint Server 2013, and SQL Server 2012

Microsoft Business Analytics combines Business Intelligence with Data Warehousing and Big Data Analytics. This 1-hour 20-minute video by Rafal Lukawiecki introduces this concept by showing you how real-world analytics, created by a power user in Excel 2013, can be shared with others in a company, using SharePoint Server 2013, and subsequently scaled-up to the needs of an enterprise, by means of a SQL Server 2012 SP1 Analysis Services Tabular Model. Rafal covers the entire subject broadly, showing you some of the new Excel and SharePoint 2013 BI features, such as: the new Power View, Interactive Geospatial Maps, Data Models, Quick Explore, Timelines, and many more, in an extensive, 9-part, 55-minute, high-def demo, focusing on the enterprise lifecycle of user-created analytics, which forms the core of this video tutorial.

Spatial Reporting with Microsoft SQL Server and SharePoint Server

Spatial Reporting with SQL Server Report Builder and SharePoint Server

Spatial reports can be created using Report Builder, which comes with SQL Server. They execute in SQL Server Reporting Services (SSRS) and they can be hosted in SharePoint Server. This video shows the steps you need to take to create a simple bubble report that displays customer numbers, taken from a cube, on a map of the United States. You will also see how to share that report with co-workers using SharePoint.

MDX Queries

Chris Webb introduces a basic MDX SELECT statement

In most cases an MDX SELECT statement is used to retrieve data from a SQL Server Analysis Services cube. Let Chris Webb introduce this important statement to you in this 20-minute video.

DAX Evaluation Context (requires full access membership)

FILTER and ALL DAX Function for Context Manipulation

Evaluation Context is fundamental to understanding the behavior of DAX. Marco Russo explains: row and filter contexts, their propagation through relationships, and manipulation using: FILTER, ALL, EARLIER, VALUES, RELATED, and RELATEDTABLE functions in this 50-minute video that contains 8 detailed demos. Learning these concepts will enable you to write correctly functioning formulas, and it will prepare you to fully understand CALCULATE, the most important function in Data Analysis Expressions, as well as the remaining modules of our DAX video series.

Self-Service Data Mash-ups with Microsoft PowerPivot and SharePoint Server

Creating a Relationship Using Microsoft PowerPivot

This video shows data being mashed-up from multiple sources using Microsoft PowerPivot and DAX, all by the end user, in a self-service way.

Data Warehousing and Integration with Microsoft SQL Server

Data Warehousing and Data Integration with Microsoft SQL Server

This video outlines basic concepts of Data Warehousing and Data Integration using Microsoft SQL Server, focussing on its Integration Services (SSIS) component.

Excel BI: Basic Concepts (requires full access membership)

Basic Excel Business Intelligence Concepts: Measures, Attributes, Dimensions, Hierarchies

Carmel Gunn, a Data Management Specialist from Prodata introduces fundamental concepts of Excel BI: measures, dimensions, attributes, and hierarchies, while explaining how to use them in your pivot tables. In the extensive, 30-min demo, you will also learn about the layout of the Excel BI tools, including the Pivot Table Fields List and its Fields Section, the Design ribbon, and even how to add a new calculated measure.

What is Time Intelligence?

TOTALYTD DAX Time Intelligence Function

Time Intelligence just means doing calculations over periods of time, or over calendar dates. Let Alberto Ferrari, best-selling author of books on DAX, and a renowned SSAS expert, show you how to use TOTALYTD in this short 2-min video, in which he uses it to compute Total Sales Year-to-Date in a simple Excel data model.

DAX Time Intelligence (requires full access membership)

Time Intelligence Semi-Additive Measures in DAX

Time Intelligence is a set of techniques for performing time and date-based calculations. It covers a broad set of calculations needed for business reporting. Let Alberto Ferrari, book author and a renowned Data Analysis Expressions expert, show you an in-depth tour of these functions, in this 1-hour video that contains 6 detailed, hi-def demos. You will learn about: calendar tables, time-based role dimensions, TOTALYTD, TOTALQTD, TOTALMTD, and the CALCULATE function used with time-oriented, predefined and custom filters, and dealing with semi-additive measures, including last-day, or last-non-empty aggregations.

HappyCars Sample Data Set for Learning Data Mining (requires full access membership)

Data Mining Structures Included in the HappyCars Sample Data Set

HappyCars is our educational sample data set, used for teaching Data Mining. It comes with SQL Server tables containing sample data, such as Customers, NonCustomers, Sales, and CustomerActivity, plus a few utility views, amongst others. It also comes with a SQL Server Data Tools (SSDT) project, HappyCarsDM, which contains a prebuilt data source and views, and a series of Mining Structures containing Mining Models, which we explain in the videos of our online Data Mining training course. It is available, at no additional cost, to our Full Access Members, as an educational aide, helpful when following our videos. 

Decision Trees in Depth (requires full access membership)

Microsoft Decision Trees

Decision Trees are the most useful Microsoft data mining technique: they are easy to use, simple to interpret, and they work fast, even on very large data sets. At heart, a decision tree is just a tree of nodes. Each node represents a logical decision, which you can just think of as a choice of a value of one of your inputs that would make the most profound difference to the output that you wish to study. This almost 2-hour, in-depth video by Rafal starts with an explanation of the three key uses of decision trees, which are: data classification, regression, and associative analysis, and then takes you on a comprehensive tour of this data mining algorithm, covering it in slides and detailed, hi-def demos, which you can follow. Once you try a decision tree a few times, you will realise how easy, and useful they are to help you understand any sets of data.

Many-to-many Relationships in DAX

Alberto shows DAX formula for handling a many-to-many relationship

Learn how to use many-to-many relationships in DAX by applying formulas which correctly handle filter context propagation over relationships in this short, 3-minute video by Alberto Ferrari.

MDX Calculated Members (requires full access membership)

Chris Webb explains three ways to create calculated members in MDX

Calculated members are the most commonly used way of performing calculations in MDX. Let Chris Webb explain the different ways in which they can be created in this 45-minute video, part of our online MDX course.

Information Security

Information Security, with a focus on data protection, cryptography, and holistic security has been a long-term area of specialisation for Project Botticelli. Although most of our current work focuses on Business Intelligence, we continue to maintain our InfoSec skills and we actively apply stringent best security practices in our work.

Clustering in Depth (requires full access membership)

Clustering: Cluster Profiles Diagram in SSDT

Microsoft Clustering is a workhorse algorithm of data mining. It is used to explore data, segment and categorise it, and to detect outliers (or exceptions, anomalies). Each cluster represents naturally occuring groupings of your data points, grouped by their similarities, as described by their various attributes. In this in-depth, 1-hour 50-minute video, Rafal explains clustering concepts, the entire process, and all of the algorithm parameters. The detailed 12-part demo, which forms the heart of this tutorial, shows you the iterative process of clustering, explaining how to segment your own data, such as customers, or products.

DAX AW Sample Data Set (requires full access membership)

If you would like to follow Marco and Alberto’s demos, you will find it easier if you use the same data as they do in the video. This workbook already contains calculated columns and measures created in the video. You can create new ones or remove the existing ones and creating the same ones as you have seen in the video. We offer this workbook as a free bonus for Full Access Members who are following our DAX online course.

Selecting, Filtering, and Sorting Data in Excel (requires full access membership)

Selecting, Sorting, and Filtering Data with Excel BI

There are many ways to select data in Excel: basic and advanced filtering, range selections, pivot table filtering, date and context filtering, sorting, ranking, grouping, slicing (including timelines), creating user-defined sets, and advanced data navigation. If you want to do things faster and better in Excel, make sure you become proficient with all the different ways of selecting data by watching this in-depth, 48-minute video tutorial by Carmel Gunn, Data Specialist from Prodata, and follow her many hands-on demos.

What is the MDX Current Member Function?

Chris Webb explains what is the CurrentMember MDX function

The CurrentMember function is, probably, the most important function in MDX: understanding how it works is the key to being able to write all kinds of really useful calculations in MDX, such as time intelligence calculations. Let Chris Webb, noted authority on MDX, explain this function to you in this short, free video.

MDX: Member and Set Functions (requires full access membership)

Chris Webb explains the Ancestor MDX function

Being able to think in sets is the key to being able to write more advanced queries and calculations in MDX. Chris Webb introduces the commonest MDX functions that return sets in this 40-minute, demo-driven video, including: .MEMBERS, CROSSJOIN(), .PARENT, DESCENDANTS( ), ANCESTOR(), .NEXTMEMBER, .PREVMEMBER, .LEAD() and .LAG(). You will need these functions for rudimentary navigation using MDX.

DAX Patterns: Banding, New vs Old, Many-to-many (requires full access membership)

Alberto Ferrari Explains Many-to-many DAX Pattern

Alberto Ferrari, BI expert from sqlbi.com shows how to solve common business patterns using the DAX language in this 50-minute, demo-focused video. Patterns are useful for two reasons: they let you learn advanced DAX techniques and, by adapting their code to your needs, you can use them as a quick recipe for your own scenarios. This video discusses banding, computing new vs old metrics, and many-to-many relationship patterns.

Hierarchies in DAX (requires full access membership)

Marco Russo explains Parent/Child Hierarchies in DAX

Hierarchies, including parent-child ones, can be created using a combination of a few DAX formulas and a data model in Power Pivot or SSAS Tabular. Marco Russo, BI expert from sqlbi.com, shows you how to work with them in this 55-minute video. Well-implemented hierarchies can greatly enhance navigation and usability, so learn how to implement their calculation logic by watching this demo-rich tutorial.

How to Calculate with Hierarchies in DAX?

Marco shows an example of the use of hierarchies, to calculate Ratio-to-total, in DAX

Learn how to calculate hierarchical ratio-to-parent measures in DAX, and how to use them in pivot tables, with Marco Russo, BI expert from sqlbi.com.

MDX: Previous Period Growths, Shares & Moving Averages (requires full access membership)

Chris Webb discusses Previous Period Growth MDX Pattern

In this 40-minute video by Chris Webb you will see common business calculations implemented in MDX: the relative tuple pattern, used for previous period growth calculations, percentage share calculations, and the relative set pattern, used for obtaining three-period moving averages.

MDX Numeric Functions and CURRENTMEMBER (requires full access membership)

Chris Webb discuses the Sum() MDX function

There are a number of important functions in MDX that return numeric values. Chris Webb explains these in this 30-minute, demo-driven tutorial, focusing on Sum(), Count(), Aggregate(), and other numeric functions like Min(), Max(), and Avg(). Importantly, however, half of this video is dedicated to the most important MDX function, CurrentMember, which is essential to writing real-world calculations, such as time intelligence.

More MDX Member & Set Functions (requires full access membership)

Chris Webb shows how to set date dimension type properties

MDX has a lot of set and member functions that make it easy to create all kinds of advanced common business calculations. Watch this full-length, 1-hour 40-minute, demo-rich video by Chris Webb to learn how to compute important business reporting metrics using MDX. You will learn about: ParallelPeriod(), PeriodsToDate(), YTD(), QTD(), MTD(), Filter(), NonEmpty(), TopCount(), BottomCount(), TopPercent(), BottomPercent(), Head(), Tail(), Generate(), StrToX/XToStr function family.

Chris explains the MDX Subselect

Chris Webb introduces the subselect in this short 3-min video. It uses an MDX SELECT statement instead of a cube’s name, and it allows you to pre-filter the members on a hierarchy before you run a query.

Exists, MDX Solve Order, and Subselects (requires full access membership)

MDX Solve Order

This 50-min video, part of our MDX course, by Chris Webb, covers three separate, advanced MDX topics: autoexists and the Exists() function and the Existing operator, solve order, and subselects. Not only does Chris carefully explain these important topics, but he also takes time to show everything in his detailed, live demos, discussing the code, and the results.