This page has 0 threads | Add post

Blogs

Finding our blogs useful? Please consider helping us to share more!

How to write queries in DAX to interrogate SSAS tabular models Part eight of an eight-part series of blogs
As well as creating measures to aggregate data in tabular models using DAX, you can also write queries to extract data - this blog shows you how! Writing DAX queries DAX and SQL compared The EVALUATE command in the DAX query language Using SUMMARIZE to group or aggregate DAX query data Filtering in DAX queries using CALCULATETABLE or FILTER Adding columns in a DAX query using ADDCOLUMNS Combining the results of two or more tables Other useful DAX functions (this blog) This blog is part of our online SSAS Tabular tutorial; we also offer lots of other Analysis Services training resources.

How to write queries in DAX to interrogate SSAS tabular models

Part eight of an eight-part series of blogs

As well as creating measures to aggregate data in tabular models using DAX, you can also write queries to extract data - this blog shows you how!

Writing DAX queries
DAX and SQL compared
The EVALUATE command in the DAX query language
Using SUMMARIZE to group or aggregate DAX query data
Filtering in DAX queries using CALCULATETABLE or FILTER
Adding columns in a DAX query using ADDCOLUMNS
Combining the results of two or more tables
Other useful DAX functions (this blog)

This blog is part of our online SSAS Tabular tutorial; we also offer lots of other Analysis Services training resources.

Posted by Andy Brown on 12 February 2016

Other useful DAX functions

To wrap up this section, I thought I'd show a couple of other potentially useful DAX functions.

Using ROW to Display One Row of Data

It can be useful when testing DAX to be able to show single values, using the ROW function. The syntax is:

ROW(

Name for the first column you want to display,
Calculation expression for this column,

...,

Name for the last column you want to display,
Calculation expression for this column

)

The ROW function is similar to a SELECT statement in SQL run without a FROM clause.

Here's an example query, listing out the current user name, time and number of products:

-- show the current user and time

EVALUATE

ROW (

"Current user",

USERNAME (),

"Current time",

FORMAT ( NOW (), "HH:mm:ss" ),

"Number of products",

COUNT ( Product[ProductId] )

)

This would give these results:

This query would display these 3 bits of information.

Using CONTAINS to Check if a Field Value Exists

The CONTAINS function has the following syntax, and returns TRUE or FALSE:

CONTAINS(

Name of table to search,

Name for the first column to look in,
Value to look for,

...,

Name of the last column to look in,
Value to look for

)

Here's an example of the function, showing whether there's a product called Wol with a list price of £3.95 (there is):

-- look for product with specific

-- name and price

EVALUATE

ROW (

"Does WOL exist?",

CONTAINS (

Product,

Product[ProductName],

"Wol",

Product[FullPrice],

3.95

)

Here are the unexciting results from running this query:

A product called WOL costing £3.95 does exist in the Product table.

And on that slightly anti-climactic note, I've finished showing the DAX query syntax that I wanted to cover!

Parts of this blog
Writing DAX queries DAX and SQL compared The EVALUATE command in the DAX query language Using SUMMARIZE to group or aggregate DAX query data Filtering in DAX queries using CALCULATETABLE or FILTER Adding columns in a DAX query using ADDCOLUMNS Combining the results of two or more tables Other useful DAX functions (this blog)

Some other pages relevant to the above blogs include:

This blog has 0 threads

Add a new post

Book any course as classroom, onsite or online training, or as one-to-one consultancy

Free resources

Paid services

Getting help

Where we are

Where you are

Online

Transparent reviews

Delivery of courses

Nicer to work with

Reliable and established

Our training courses

C#

Excel

MySQL

Power Apps

Power Automate

Power BI and DAX

Python

Report Builder

SQL

SQL Server

VBA Macros

Other training resources

Blogs

Exercises

YouTube tutorials

YouTube shorts

Test your skills

Consultancy

Courseware

Self-paced courses

Newsletters

Publications

Our training venues

London

Manchester

Across the UK

At your site

Online

Why we are different

Hundreds of published reviews

Small class sizes

Outstanding courseware

Online classroom

(Almost) no cancellations

Wise Owl trainers only

Genuine integrity

Invoices after training

30+ years of Wise Owl

Our top 100 clients

BLOGS BY TOPIC

BLOGS BY AUTHOR

Other useful DAX functions

Using ROW to Display One Row of Data

Using CONTAINS to Check if a Field Value Exists

Head office

London

Manchester