We execute the following query to fetch metrics on a monthly basis.
SELECT metrics.cost_micros,metrics.impressions,metrics.clicks,metrics.all_conversions,metrics.search_budget_lost_impression_share,metrics.search_rank_lost_impression_share FROM customer WHERE segments.month = '{0}'
The problem is when we onboard a new client we want to fetch their historical data, how do we know when their data starts, is there a query we could use to fetch that? Because if I pass in a start date that is older than the data that exists I get a bad request error. Thanks