As with other campaign types, you can use
GoogleAdsService.SearchStream
to
retrieve performance metrics for Smart Display campaigns and their ads. For
example, the query below will retrieve impressions and clicks from the last 30
days for all responsive display ads in Smart Display campaigns.
SELECT
campaign.id,
ad_group.id,
ad_group_ad.ad.responsive_display_ad.business_name,
ad_group_ad.ad.responsive_display_ad.call_to_action_text,
ad_group_ad.ad.responsive_display_ad.descriptions,
ad_group_ad.ad.responsive_display_ad.headlines,
ad_group_ad.ad.responsive_display_ad.long_headline,
metrics.clicks,
metrics.impressions
FROM ad_group_ad
WHERE campaign.advertising_channel_type = 'DISPLAY'
AND campaign.advertising_channel_sub_type = 'DISPLAY_SMART_CAMPAIGN'
AND segments.date DURING LAST_30_DAYS