Entity framework and Exists clause

.net, entity-framework, linq

Solution

`EXISTS` in SQL ~= `Any` in LINQ:

var q = from p in Context.Products
        where Context.GenericInformation.Any(gi => gi.Product_K == p.Product_K)
        // add other columns to the where if need be; I can't tell what the 
        // relationship is supposed to be
        select p;

Problem

I'm a rookies of EF so, sorry for my perhaps foolish question. I've 2 entities without any relationship (VS does not load the join and I can't manually add it because the primary key of the child uses a derivated key of its parent). Example Entity master Products keys GKey_K, Product_K fields ..... Entity detail GenericInformation keys GKey_K, GI_K fields Product_K, .... Well, my question is simple (I hope also my english!), how I can read only the products that have some reference on GenericInformation? TIA Possible duplicate: Best way to check if object exists in Entity Framework?

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