How is data refreshed?

[nadian]

Hi,

What would be the reason that I see 2 concurent queries (same) running on my datasource when I'm refreshing only one query in pbix?

[v-sihou-msft]

@nadian

What's your data source? 

As I tested with SQL and SSAS data source, I see the underlying T-SQL query/MDX is only executed one time, but it will also execute other queries agains system tables and DMVs.

SQL data source: 

SSAS: