private IQueryable <VideoMetricPersona> MetricsByPersona(DateTime start, DateTime end, ApplicationDbContext context, Tag[] filters, ArchiveMode archive)
{
var videoList = context.ApplicationVideos.AsQueryable();
return(from v in ApplyFilters(context, videoList, filters, archive)
join vc in context.ApplicationVideoSourceCampaigns on v.Id equals vc.VideoId
join a in ApplySourcAdFilters(context, filters).ToList().AsQueryable() on vc.CampaignId equals a.CampaignId
join am in context.SourceAdMetrics.Where(am => (am.EventDate >= start && am.EventDate <= end)) on a.Id equals am.AdId
join aau in context.SourceAdSets on a.AdSetId equals aau.Id
join ap in context.ApplicationPersonaVersionSourceAdSets on aau.Id equals ap.AdSetId into AdSetPersonaVersions
from ap in AdSetPersonaVersions.DefaultIfEmpty()
join pv in context.ApplicationPersonaVersions on ap.PersonaVersionId equals pv.Id into PersonaVersions
from pv in PersonaVersions.DefaultIfEmpty()
join p in context.ApplicationPersonas on pv.PersonaId equals p.Id into Personas
from p in Personas.DefaultIfEmpty()
select new VideoMetricPersona()
{
VideoId = v.Id, Metric = am, Persona = p.Name ?? "None", Platform = a.Platform
});
}