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PONeed help converting query with joins and group by/count to LINQ to SQL
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  1. PONeed help converting query with joins and group by/count to LINQ to SQL
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    copied!<p>I need help converting this query to linq to sql:</p> <pre><code>select rd.RouteDispatchID, r.RouteNumber, s.ShortDescription Status, rd.DispatchDate, rd.CreationDate CreatedDate, e.FirstName, e.LastName, count(md.MachineDispatchID) NumMachines from dbo.RouteDispatch rd inner join dbo.Route r on rd.RouteID = r.RouteID inner join dbo.Reference s on rd.StatusCodeReferenceID = s.ReferenceID inner join dbo.Employee e on rd.CreatedByEmployeeID = e.EmployeeID left join dbo.MachineDispatch md on rd.RouteDispatchID = md.RouteDispatchID and md.IsSelected = 1 </code></pre> <p>Here's what I have so far, but I can't figure out how to get the group by/count to work and neither can my Linqer tool...</p> <pre><code>var query = from rd in db.RouteDispatches join r in db.Routes on rd.RouteID equals r.RouteID join s in db.References on new { StatusCodeReferenceID = rd.StatusCodeReferenceID } equals new { StatusCodeReferenceID = s.ReferenceID } join e in db.Employees on new { CreatedByEmployeeID = rd.CreatedByEmployeeID } equals new { CreatedByEmployeeID = e.EmployeeID } join md in db.MachineDispatches on new { RouteDispatchID = rd.RouteDispatchID, IsSelected = true } equals new { RouteDispatchID = md.RouteDispatchID, IsSelected = md.IsSelected.Value } into md_join from md in md_join.DefaultIfEmpty() select new RouteView { RouteDispatchID = rd.RouteDispatchID, RouteNumber = r.RouteNumber, Status = s.ShortDescription, DispatchDate = rd.DispatchDate.Value, CreatedDate = rd.CreationDate.Value, FirstName = e.FirstName, LastName= e.LastName, NumMachines = 0//.Count() }; </code></pre> <p>Thanks to whoever can figure this out, I'm still a newbie with linq to sql so am coming up with like 2-3 new questions per day!! :)</p>
 

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