考虑以下Linq to Entities查询:
return (from lead in db.Leads
join postcodeEnProvincie in postcodeEnProvincies
on lead.Postcode equals postcodeEnProvincie.Postcode
where (lead.CreationDate >= range.StartDate) && (lead.CreationDate <= range.EndDate)
group lead by postcodeEnProvincie.Provincie into g
select new Web.Models.GroupedLeads() {
GroupName = g.Key,
HotLeads = g.Count(l => l.Type == Data.LeadType.Hot),
Leads = g.Count(),
PriorityLeads = g.Count(l => l.Type == Data.LeadType.Priority),
Sales = g.Count(l => l.Sold),
ProductA = g.Count(l => l.Producten.Any(a => ((a.Name.Equals("productA", StringComparison.CurrentCultureIgnoreCase)) || (a.Parent.Name.Equals("productA", StringComparison.CurrentCultureIgnoreCase))))),
ProductB = g.Count(l => l.Producten.Any(a => ((a.Name.Equals("productB", StringComparison.CurrentCultureIgnoreCase)) || (a.Parent.Name.Equals("productB", …