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Query Plans

Every DAX query generates query plans describing operations performed by the xVelocity (VertiPaq) engine. This page contains documents and resources enabling you to read these query plans and use such information to optimize your DAX queries.



DIVIDE Performance

DIVIDE Performance 01

The DIVIDE function in DAX is usually faster to avoid division-by-zero errors than the simple division operator. However, there are exceptions to this rule, described in this article through a simple performance analysis.

WHITEPAPER

Using Tabular Models in a Large-scale Commercial Solution

large-scale

Analysis Services Tabular can be used in large-scale solutions and SQLBI already helped several companies in the challenging effort of defining a reliable and scalable architecture, designing the right data model and optimizing the queries. One of these stories is now a case study published as a Microsoft White Paper.

WHITEPAPER

Understanding Distinct Count in DAX Query Plans

distinctcount-web

Distinct Count calculations in DAX are very fast compared to other engines. But when you have a large number of values, performance might be different depending on the query you write. This paper investigates different techniques that produce the same result with different performance, showing that you need to make

WHITEPAPER

Understanding DAX Query Plans

queryplans

Understanding DAX query plans is a long process. This paper explains how to capture and read a DAX query plan, helping you to find possible optimizations of your DAX queries.