Question

I’m trying to replicate the following SQL query in linq:

Select
     l.*,
    ISNULL( i.InterestPercentage,0)
     as InterestPercentage
FROM properties l
LEFT JOIN interest i on i.ListingKey = l.ListingKey
Where i.userId = {0}

I don’t really have much to go with at the moment:

var results = from l in context.properties
              join s in context.interest on l.ListingKey equals s.ListingKey
              where s.userId == "";

This returns me a full join, but I’d like to return the properties with a single additional value, the InterestPercentage. I think I might need to create a new object that is all the columns of properties with an additional property of InterestPercentage. Then add select new MyObject { tons of property setters }.

Additionally though, I’m trying to expose this via Odata, would I lose the queryable ability by doing this?

Answer 1

You can try to return

new {MainObj = l, InterestPercentage = (your calculated field)}

Or create an object which will have similar structure as above. This will help you avoid all property setting.