Stairway Series

Stairway to DAX and Power BI - Level 16: The DAX ALLEXCEPT() Function

  • Stairway Step

Business Intelligence Architect, Analysis Services Maestro, and author Bill Pearson introduces the DAX ALLEXCEPT() function, discussing its syntax, uses and operation. He then provides hands-on exposure to ALLEXCEPT(), focusing largely upon its most popular use in removing filters from all columns in a table - except the filters we specify.

2020-10-14

1,044 reads

Stairway to Advanced T-SQL

Stairway to Advanced T-SQL Level 11: Using Logical Operators

  • Stairway Step

SQL Server supports a number of different logical operators.  These operators can be used for testing Boolean conditions that return true, false and unknown in your T-SQL code.  Logical operators are useful for defining constraints to limit the rows be processed when selecting or updating data. This chapter will provide an overview of the logical […]

4 (1)

2020-11-04 (first published: )

2,441 reads

Stairway to DAX and Power BI

Stairway to DAX and Power BI - Level 15: The DAX ALLSELECTED() Function

  • Stairway Step

Business Intelligence Architect, Analysis Services Maestro, and author Bill Pearson introduces the DAX ALLSELECTED() function, discussing its syntax, uses and operation. He then provides hands-on exposure to ALLSELECTED(), focusing largely upon its most popular use in supporting “visual totals” in Power BI.

4 (2)

2020-09-02

1,228 reads

Stairway to DAX and Power BI

Stairway to DAX and Power BI - Level 14: DAX CALCULATE() Function: The Basics

  • Stairway Step

Business Intelligence Architect, Analysis Services Maestro, eight-year Microsoft Data Platform MVP and author Bill Pearson introduces the DAX CALCULATE() function, discussing its syntax, basic uses and operation. He then provides hands-on exposure to CALCULATE(), focusing largely upon its most basic uses in evaluating an expression in a context that is modified by specified filters.

5 (1)

2020-08-12

1,589 reads

Stairway to U-SQL icon

Stairway to U-SQL Level 22: Creating a Custom Extractor

  • Stairway Step

Throughout this series, we’ve consistently dealt with delimited text files; comma and tab, for instance. We’ve used the U-SQL built-in extractors to process these files. But what if we need to deal with different types of file, like JSON, XML or fixed width? That’s where custom extractors come in. U-SQL provides us with the ability […]

2020-07-01

1,126 reads

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