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You're reading from  Expert Data Modeling with Power BI - Second Edition

Product typeBook
Published inApr 2023
PublisherPackt
ISBN-139781803246246
Edition2nd Edition
Concepts
Business Intelligence
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Author (1)
Soheil Bakhshi
Soheil Bakhshi
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Soheil Bakhshi

Soheil Bakhshi is the founder of Data Vizioner and is a sought after BI consultant. Working in data and analytics for more than 20 years, Soheil's experience lies in Microsoft BI, Data Warehousing, and Power BI platform. He possesses MSCE, MCSA certifications and is a Microsoft MVP (Most Valuable Professional). He has a passion for sharing knowledge via his website and speaking at conferences and Power BI community events locally and globally. In following his desire for simplicity and efficiency, he is behind Power BI community tools and commercial products such as Power BI Exporter and Power BI Documenter.
Read more about Soheil Bakhshi

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Be mindful of query folding and its impact on data refresh

Data modelers need to pay extra attention to query folding. Not only can query folding affect the performance of a data refresh but it can also hit resource utilization during the data refresh. Query folding is essential for the very same reason an incremental data refresh is, so if the refresh takes too long due to the queries not being folded, the incremental data refresh never happens. It is also crucial for the models in either DirectQuery or Dual storage mode as each transformation step must be folded. As query folding is a vital topic, it is good to spend some time to see what it is all about.

Understanding query folding

Query folding is simply the Power Query engine’s capability to translate the transformation steps into the native query language. Therefore, based on the Power Query engine’s capability, a query in the Power Query Editor may be fully folded or partially folded. For instance, we...

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Expert Data Modeling with Power BI - Second Edition
Published in: Apr 2023Publisher: PacktISBN-13: 9781803246246
© 2023 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Soheil Bakhshi

Soheil Bakhshi is the founder of Data Vizioner and is a sought after BI consultant. Working in data and analytics for more than 20 years, Soheil's experience lies in Microsoft BI, Data Warehousing, and Power BI platform. He possesses MSCE, MCSA certifications and is a Microsoft MVP (Most Valuable Professional). He has a passion for sharing knowledge via his website and speaking at conferences and Power BI community events locally and globally. In following his desire for simplicity and efficiency, he is behind Power BI community tools and commercial products such as Power BI Exporter and Power BI Documenter.
Read more about Soheil Bakhshi

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