Earn a 50% discount on the DP-600 certification exam by completing the Fabric 30 Days to Learn It challenge.
Hi,
I have a transformation that is very fast in query editor (when I click on each of the steps in turn), but extremely slow (runs for more than an hour) when I "close and apply". Please do you know of any general reasons why this may happen? (I'm just connecting to a excel worksheet, transposing and filtering)
Thanks,
CM
Solved! Go to Solution.
Hi @CloudMonkey ,
The performance for your data model is related on many aspects, you could refer to below link:
Below link explains how you can use a process monitor to find out how much data Power Query reads from a file:
Below link has some information about how Power Query caches data, which is particularly important if you have queries referencing other queries:
https://blog.crossjoin.co.uk/2016/11/20/referenced-queries-and-caching-in-power-bi-and-power-query/
Also if you don't need to preview all of the queries you can turn off Background Data; go to Query Options > Data Load > deselect 'Allow data preview to download in the background'.
Hope it could help you.
Regards,
Daniel He
Hi @CloudMonkey ,
Could you please tell me if your problem has been solved? If it is, could you please mark the helpful replies as Answered to close this topic?
Regards,
Daniel He
Hi @CloudMonkey ,
The performance for your data model is related on many aspects, you could refer to below link:
Below link explains how you can use a process monitor to find out how much data Power Query reads from a file:
Below link has some information about how Power Query caches data, which is particularly important if you have queries referencing other queries:
https://blog.crossjoin.co.uk/2016/11/20/referenced-queries-and-caching-in-power-bi-and-power-query/
Also if you don't need to preview all of the queries you can turn off Background Data; go to Query Options > Data Load > deselect 'Allow data preview to download in the background'.
Hope it could help you.
Regards,
Daniel He
User | Count |
---|---|
107 | |
87 | |
81 | |
76 | |
71 |
User | Count |
---|---|
112 | |
105 | |
96 | |
74 | |
66 |