Stairway Series

Stairway to DAX and Power BI

Stairway to DAX and Power BI - Level 17: Time Intelligence Functions: The DAX DATEADD() Function

  • Stairway Step

Business Intelligence Architect, Analysis Services Maestro, and author Bill Pearson introduces the DAX DATEADD() function, discussing its syntax, uses and operation. He then provides hands-on exposure to DATEADD(), focusing largely upon a popular use in creating prior-period values at multiple Date hierarchy levels.

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2026-04-15 (first published: )

2,730 reads

Stairway to DAX and Power BI

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

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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.

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2026-04-15 (first published: )

5,012 reads

Stairway to Advanced T-SQL

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

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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 […]

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2022-04-20 (first published: )

3,791 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.

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2026-04-15 (first published: )

3,765 reads

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RegEx Functions I

By Steve Jones - SSC Editor

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Question of the Day

RegEx Functions I

Which of these RegEx functions need compatibility level 170 in SQL Server 2025?

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