GAQL metrics.X is effected by segments.Y?

I have this GAQL:

  var query = 'SELECT \     customer.id,\     customer.descriptive_name,\     group_placement_view.placement_type,\     group_placement_view.display_name,\     metrics.average_cpm\  FROM group_placement_view\  WHERE\     group_placement_view.placement_type IN ("YOUTUBE_CHANNEL")\     AND campaign.advertising_channel_type = "VIDEO"\     AND segments.date BETWEEN "'+ fromDate.query_date + '" AND "' + toDate.query_date + '"\     AND metrics.impressions >= 100\     AND metrics.average_cpm > 1000000' 

IIUC it segments data by days. Correct? segments.date

But the metrics.impressions >= 100 relates to the aggregated data of the whole period. Right?