Question

I have four tables:

- Client with PK ClientID. - Destination with PK DestinationID. - Language with PK LanguageID. - DestinationDetail with PK DestinationID. - RL-Client-Destination with PKs ClientID and DestinationID. 

The Client may have zero or n Destinations. A destination has n DestinationDetails, each of these DestinationDetail has a language.

Ok. I need to retrieve all of DestinationDetails for a given client and a given language.

I start writing this:

 try    {       ObjectQuery clientes =            guiaContext.Cliente;       ObjectQuery destinos =           guiaContext.Destino;       ObjectQuery idiomas =           guiaContext.Idioma;       ObjectQuery detalles =           guiaContext.DetalleDestino;        IQueryable detalleQuery =           from cliente in clientes           from destino in destinos           from idioma in idiomas           from detalleDestino in detalles           where destino.           select detalleDestino;     }    catch    {    } }  

Any advice?

Thanks!

Answer 1

Its along the lines:

var detalleQuery =           from client in guiaContext.Clients           where client.ID == 1           from destination in cliente.Destinations           from destinationDetail in destination.DestionationDetails           where destinationDetail.Language.Iso2Code == 'es'           select destinationDetail;