KB2974373 - FIX: Poor performance when you use DAX functions on a String or Boolean column in SSAS 2014

Applies To
SQL Server 2014 Enterprise - duplicate (do not use) SQL Server 2014 Developer - duplicate (do not use) SQL Server 2014 Standard - duplicate (do not use) SQL Server 2014 Express - duplicate (do not use)

Symptoms

When you use Data Analysis Expression (DAX) functions such as COUNTA, AVERAGEA, COUNTBLANK among other functions to perform some operations on a String or Boolean column, you may experience poor performance on Microsoft SQL Server 2014 Analysis Services (SSAS).

Resolution

The issue was first fixed in the following cumulative update of SQL Server.

Cumulative Update 2 for SQL Server 2014 /en-us/help/2967546

About cumulative updates for SQL Server

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:

      

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.