Union in entity framework

Question

I have two tables: Vehicles and Workers.

Vehicle(Id, Number)
Workers(Id, Name, ContractorVehicleNumber)

I would like to write lambda que

Answer 1

You cant create entities in the select statement. Try this instead:

public class VehicleDTO
{
  public int Id { get; set; }
  public int Number { get; set; }
} 

public IQueryable Get(bool includeContractorVehicles)
{
    var query = GetQuery().Select(x => new VehicleDTO(){ ID = c.ID, Number = c.Number });

    if (includeContractorVehicles)
    {
        WorkerRepository rep = new WorkerRepository();
        var contractorsVehicles = rep.GetWirkers().
            Select(x => new VehicleDTO(){ Number = x.ContractorVehicleNumber});
        query = query.Union(contractorsVehicles);
    }

    return query;
} 

Also are you sure you want a Union and not a Concat ?