Hi Kelly,
Thank you for reaching out. You could refer to this link for the fields/resources that can be selected with segment.date and this link for that of segment.hour. If the field/resource is available in both lists, then you can use both segmentations. As there is a data freshness mechanism for the metrics, once they are available you would be able to fetch the data. Please note that for some metrics they could take longer time to be updated or would be updated a few times so you may see some change on the data as time goes by. Please let me know if you have any further concerns.
Thanks and regards,
Xiaoming, Google Ads API Team
Hi Kelly,
Thank you for reaching out. Could you please elaborate your question and provide more information on what specifically you want to achieve?
Thanks and regards,
Xiaoming, Google Ads API Team