Linq “Could not translate expression… into SQL and could not treat it as a local expression.”

Question

I started out with this question, which I sort of answered there, and now I\'m asking the more fundamental question here. I\'ve simplified the query down to this:

Answer 1

@Marc Gravell beat me to the answer, credit also to the various answerers to this question who put me on the right track.

I did it much like Marc's first suggestion, like so:

var q1 = from ent in LinqUtils.GetTable()
         from tel in ent.Telephones.DefaultIfEmpty()
         select new { ent, tel };
var q2 = from q in q1.AsEnumerable()
         select new {
           Name = q.ent.FormattedName,
           Tel = q.tel != null ? q.tel.FormattedNumber : ""
         };

And that did it! Thanks, all!