Converting a LEFT OUTER JOIN to Entity Framework

Question

Here is a SQL Query I want to convert to EF4.3

        command = database.GetSqlStringCommand(@\"
                                select 
                            


        

Answer 1

Given the foreign keys that exist in the question diagram, how about something like this?

var query = from a in context.Authentications
            select new
            {
                a.AuthenticationID,
                a.Username,
                a.Authorisations.Permissions ?? false,
                a.Authorisations.Organisations.OrganisationIdentifier ?? 0
                a.Authorisations.Organisations.OrganisationID ?? 0
            };