Dimensions for aggregation:
`year` int COMMENT 'year of pageviews',
`month` int COMMENT 'month of pageviews',
`day` int COMMENT 'day of pageviews',
`hour` int COMMENT 'hour of pageviews',
`project` string COMMENT 'Project name, computed out of requests hostname',
`access_method` string COMMENT 'Method used to access the pages, can be desktop, mobile web, or mobile app',
`agent_type` string COMMENT 'Agent accessing the pages, can be spider or user',
`country_code` string COMMENT 'Country iso code of the accessing agents (computed using maxmind GeoIP database)',
`referer_class` string COMMENT 'Indicates if a referer is internal, external or unknown.'
`cache_status` string COMMENT 'Cache status',
`http_status` string COMMENT 'HTTP status of response',
browser_name
browser_major
device_family
os_name
os_major
`is_zero` boolean COMMENT 'Indicates if the webrequest is accessed through a zero provider',
`uri_path` string COMMENT 'Path of request'
`uri_query` string COMMENT 'Query of request',
`article` string Refinement of uri_path and uri_query