How to reduce heavy Index column size

[Denis_Slav]

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?

[Fowmy · Accepted solution]

@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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[Greg_Deckler · Accepted solution]

@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.

[amitchandak]

@Denis_Slav , refer if this can help

https://www.youtube.com/watch?v=vrgeDfO8RXQ

Best Practices
https://maqsoftware.com/expertise/powerbi/power-bi-best-practices
https://docs.microsoft.com/en-us/power-bi/guidance/power-bi-optimization
https://www.c-sharpcorner.com/article/power-bi-best-practices-part-1/
https://www.knowledgehut.com/blog/business-intelligence-and-visualization/power-bi-best-practices
https://community.powerbi.com/t5/MBAS-Gallery/Microsoft-Power-BI-The-Do-s-and-Don-ts-of-Power-BI-Rel...
https://community.powerbi.com/t5/MBAS-Gallery/Microsoft-Power-BI-My-Power-BI-report-is-slow-What-sho...

[Fowmy · Accepted solution]

@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 🙂

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