DAX expressions resolve to T-SQL queries in the Formula and Storage Engines that drive the data model, abstracting the more verbose and tedious work of writing formal queries to excel-like formula expressions. DAX expressions allow a user to create measures based on the data model, which can summarize and aggregate millions of rows of table data in seconds. ![]() Power Pivot primarily uses DAX (Data Analysis Expressions) as its expression language, although the model can be queried via MDX in a row set expression. This allows Excel to act as a Self-Service BI platform, implementing professional expression languages to query the model and calculate advanced measures. This allows a user to build a ROLAP model in Power Pivot, and use pivot tables to explore the model once it is built. Power Pivot extends a local instance of Microsoft Analysis Services Tabular that is embedded directly into an Excel Workbook. ![]() It is available as an add-in in Excel 2010, 2013 in separate downloads, and as an add-in included with the Excel 2016 program. ![]() Power Pivot is a feature of Microsoft Excel. Microsoft SQL Server 2012 - Power Pivot for Microsoft Excel 2010 - Service Pack 2
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