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Showing page 2 of 4 (34 total posts)
  • DATE function does not support all the dates in DAX by design #powerpivot #tabular #dax

    The DATE function in DAX has this simple syntax: DATE( <year>, <month>, <day> ) If you are like me, you never read the BOL notes that says in a clear way that it supports dates beginning with March 1, 1900. In fact, I was wrongly assuming that it would have supported any date that can be represented in a Date data type in Data ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on November 5, 2012
  • CUBEMEMBER and CUBEVALUE stop working after #PowerPivot upgrade to #Excel 2013

    I found an issue upgrading an Excel workbook containing PowerPivot data from Excel 2010 to Excel 2013. All CUBEMEMBER and CUBEVALUE functions point to a cube name that has been changed between the two version – you have to no longer reference the PowerPivot Data name, replacing it with ThisWorkbookDataModel instead. I wrote an article describing ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on October 31, 2012
  • A proposal for #DAX Code Formatting #ssas #powerpivot #tabular

    I recently published a set of rules for DAX code formatting. The following is an example of what I obtain: CALCULATE (     SUMX (         Orders,         Orders[Amount]     ),     FILTER ( ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on October 22, 2012
  • Optimize SUMMARIZE with ADDCOLUMNS in Dax #ssas #tabular #dax #powerpivot

    If you started using DAX as a query language, you might have encountered some performance issues by using SUMMARIZE. The problem is related to the calculation you put in the SUMMARIZE, by adding what are called extension columns, which compute their value within a filter context defined by the rows considered in the group that the SUMMARIZE uses ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on September 4, 2012
  • New videos available #dax #ssas #powerpivot

    The collaboration I and Alberto started with Project Botticelli is starting producing content. At this point we have three videos available: DAX in Action shows the power of DAX in PowerPivot solving common patterns not so easy or fast to solve in other languages DAX: Calculated Columns vs. Measures shows the difference between calculated ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on August 24, 2012
  • DAX Studio 1.0 beta available #dax #tabular #powerpivot

    Are you waiting for a usable and interactive DAX editor? Are you tired of using the MDX editor provided by SSMS as a temporary solution to write and execute a DAX query? The wait is over! DAX Studio is a free Excel add-in that enables you to write a DAX query in a small dialog box that offer a productive environment, with a tabular object browser ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on July 30, 2012
  • Analysis Services Tabular books #ssas #tabular

    Many people are looking for books about Analysis Services Tabular. Today there are two books available and they complement each other: Microsoft SQL Server 2012 Analysis Services: The BISM Tabular Model by Marco Russo, Alberto Ferrari and Chris Webb Applied Microsoft SQL Server 2012 Analysis Services: Tabular Modeling by Teo Lachev The ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on July 9, 2012
  • Optimize Many-to-Many with SUMMARIZE and Other Techniques

    We are still in the early days of DAX and even if I have been using it since 2 years ago, there is still a lot to learn on that. One of the topics that historically interests me (and many of the readers here, probably) is the many-to-many relationships between dimensions in a dimensional data model. When I and Alberto wrote the The Many to Many ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on June 1, 2012
  • A new SQL, a new Analysis Services, a new Workshop! #ssas #sql2012

    One week ago Microsoft SQL Server 2012 finally debuted with a virtual launch event and you can find many intro sessions there (20 minutes each). There is a lot of new content available if you want to learn more about SQL 2012 and in this blog post I’d like to provide a few link to sessions, documents, bits and courses that are available now or ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on March 14, 2012
  • String Comparison in #DAX

    In DAX you don’t have the LIKE operator and you have to use SEARCH instead. However, performance are not very good and it is better to use LEFT and RIGHT if you just need to compare the initial (or ending) match of a string. I just wrote an article about string comparison in DAX. During my exploration of LIKE replacement functions in DAX, I have ...
    Posted to SQLBI - Marco Russo (Weblog) by sqlbi on December 30, 2011
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