Data feed query not returning any data

[Isaura Claeys]

Hi,

I am trying to fetch some ad stats for a dynamic display ad. The campaign of the ad is linked to a data feed. I am using the following query to get the stats for every item in the feed:

SELECT 

  feed_item.id, 

  metrics.clicks, 

  metrics.impressions, 

  segments.date
FROM feed_item
WHERE feed_item.feed = 'customers/{client_id}/feeds/{feed_id}'
AND segments.date DURING LAST_30_DAYS

However, this query does not return anything, even though the campaign is live and has spent budget. It does not throw an error, it just simply doesn't return any results. Is querying item stats with data feeds not completely supported yet, or is it possible I am doing something wrong?

Thanks for the help in advance!

Kind regards,

Isaura