How to control getting preview data for WEB data connector

[Mateusz]

I am trying to understand how PowerBI desktop does data preview while loading full data into dataset. At the moment it looks like that PowerBI will do two requests: once to do the preview, second to load data into dataset. I would like to optimize this, so preview request does not trigger full export job in my API.

Ideally, I would like to be able to provide some query parameter indicating that given request is only for the preview so I can respond with some small / static data chunk.

[v-yuezhe-msft · Accepted solution]

@Mateusz，

As far as I know, there is no query parameter that can be used to optimize the request, but you can deselect "Allow Data Preview To Download In The Background" option instead.



Regards,
Lydia