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Helper I
Helper I

How to reduce heavy Index column size

Hello Comunity,

 

I add Index column, and when I analyzing performance with DAX Studio, I found that Index column cost 30% of table size, 

I need Index column, because I split all rows in my rawdata to several rows.

 

Is there any way to reduce this size to increase performance?

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Community Champion
Community Champion

Re: How to reduce heavy Index column size

@Denis_Slav 

Having index columns in your model will create high cardinality, better if you could avoid it. One way you can boost your model and calculation performance is to create summary tables and base your measures on them. Also, try and use the aggregation functionality.

Refer to these articles as well: 
https://docs.microsoft.com/en-us/power-bi/guidance/power-bi-optimization
https://blog.pragmaticworks.com/power-bi-performance-tips-and-techniques

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Super User IX
Super User IX

Re: How to reduce the heavy size of the index column

@Denis_Slav - You can't really help it. Index columns are all unique row values, so column compression is almost useless. This is also why date tables tend to be large consumers of data model space as well.


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3 REPLIES 3
Highlighted
Community Champion
Community Champion

Re: How to reduce heavy Index column size

@Denis_Slav 

Having index columns in your model will create high cardinality, better if you could avoid it. One way you can boost your model and calculation performance is to create summary tables and base your measures on them. Also, try and use the aggregation functionality.

Refer to these articles as well: 
https://docs.microsoft.com/en-us/power-bi/guidance/power-bi-optimization
https://blog.pragmaticworks.com/power-bi-performance-tips-and-techniques

________________________

Did I answer your question? Mark this post as a solution, this will help others!.

Click on the Thumbs-Up icon on the right if you like this reply 🙂

YouTube, LinkedIn

View solution in original post

Highlighted
Super User IX
Super User IX

Re: How to reduce the heavy size of the index column

@Denis_Slav - You can't really help it. Index columns are all unique row values, so column compression is almost useless. This is also why date tables tend to be large consumers of data model space as well.


---------------------------------------

Not link spamming! If I posted a link in reply it is because I did assume you know how to search the web but thought it was the fastest way to fix your issue.

I have a NEW book! 
DAX Cookbook from Packt
Over 120 DAX Recipes!




Did I answer your question? Mark my post as a solution!

Proud to be a Super User!




View solution in original post

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