Skip to main content

DAX Language - Data Analysis Expression



The DAX language was created specifically for the handling of data models, through the use of formulas and expressions. DAX is used in several Microsoft Products such as Microsoft Power BI, Microsoft Analysis Services and Microsoft Power Pivot for Excel.

Below are the types of Dax functions 

1. Aggregate 
2. Date and time
3. Filter
4. Financial 
5. Information 
6. Logical
7. Maty and trig
8. Other
9. Parent and child
10. Relationship Management 
11. Statistical 
12. Table manipulation 
13. Text
14. Time intelligence 

From the above list of functions 3 types of functions are basic and commonly used, those are Aggregate , Logical and Date and time.


Other important entities which are used with the above function are as follows 

1. Operators 
Example -  ( ), + , Not, &, =, < >, ||

2. Statements 
Define , Evaluate,  Order by, Return, Var

3. Data Types
Binary, boolean,  Currency,  date time, decimal, integer, String , Variant.


In crude language DAX is an advanced version of Excel formulas.
DAX contains similar formulas as in Excel. With dax functions you can filter the data according to specific conditions as we do it with slicers and filter we do in excel.
In DAX data is stored in tabular format. 
There are two Primary calculation you can create using DAX 
1. Calculated column
It means formulas written in columns 

2. Measures 
Formulas written in the area below table.
A formula used to manipulate data is called a measures. 


Advice - I have worked in many automation projects and used Dax functions for past 3 years. While working don't limit your thought process to what you know think what you want i.e the final result. If you don't know the formula but you have a basic idea of the end result then you are on track just search on google and you will get the answers.



Labels:

Comments

Post a Comment

Popular posts from this blog

Data Cleaning Functions in Excel

  The CLEAN function Using the CLEAN function removes nonprintable characters text. For example, if the text labels shown in a column are using crazy nonprintable characters that end up showing as solid blocks or goofy symbols, you can use the CLEAN function to clean up this text. The cleaned‐up text can be stored in another column. You can then work with the cleaned text column. The CLEAN function uses the following syntax: CLEAN(text) The text argument is the text string or a reference to the cell holding the text string that you want to clean. For example, to clean the text stored in Cell A1, use the following syntax: CLEAN(A1) The CONCATENATE function The CONCATENATE function combines, or joins, chunks of text into a single text string. The CONCATENATE function uses the following syntax: CONCATENATE(text1,text2,text3,...) The text1, text2, text3, and so on arguments are the chunks of text that you want to combine into a single string. For example, if the city, state, and ZIP co...
Post a Comment
Read more

Import CSV In Power BI

  Import CSV file Click on Get Data à More à File option and select Text/CSV . Navigate to the CSV file which needs to be imported FL_insurance_sample.csv . Select the file and click on Open. FL_insurance_sampleDownload In the CSV window on top we have 3 dropdowns, preview of data and data load options.  Select Load and it will load to power query editor window. In the Power query editor the CSV file is loaded as a Queries . In power query editor we can edit, clean and transform the file as required. 3 Dropdowns and Data Load File Origin – Type of file origin. By default its 1252 Wester European (Windows). It’s the file type as per OS and region and country. Delimiter – Delimiter for column separation. By default it detects the delimiter from data , If the delimiter is not from the default options then we can select custom delimiter. Data Type Detection – By default it detects data types of columns based on top 200 rows, we can select entire data or do not detect data type ...
Post a Comment
Read more

Formatting In Excel - helps you find meaning in the spreadsheet

  Formatting In Excel -  helps you find meaning in the spreadsheet  Spreadsheets are often seen as boring and pure tools of utility, but that doesn't mean that we can't bring some style and formatting to our spreadsheets Formatting helps your user find meaning in the spreadsheet without going through each and every individual cell. Cells with formatting will draw the viewer's attention to the important cells. In Excel, formatting worksheet data is easy. You can use several fast and simple ways to create professional-looking worksheets that display your data effectively. For example, you can use document themes for a uniform look throughout all of your Excel spreadsheets, styles to apply predefined formats, and other manual formatting features to highlight important data. Formatting a Data Raw Data   Using Font, Number tabs as shown in image to do a simple formatting   Formatting a Data with help of formatting tools in Excel  As shown in image , we have Prod...
Post a Comment
Read more