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Super User III
Super User III

Power Query Diagnostics - What does "Generate Preview" mean?

I am trying to diagnose a slow query (merging a CSV source with a SQL source) and can't really understand what the diagnostics is telling me.  Any idea what Power Query is doing when it creates a preview?

 

Annotation 2020-06-24 163914.png

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Community Support
Community Support

Hi @lbendlin ,

 

Here is an official document about "Query Diagnostics" feature in power query. You could refer to it:

https://docs.microsoft.com/en-us/power-query/querydiagnostics

 

Community Support Team _ Eads
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