How to convert this foreach loop into Linq code?

Question

I am new one with Linq and I would like to modify my old c# code to use Linq. The idea of this code to select all tables where it\'s not set and reference’s field PrimaryTab

Answer 1

Just need to use two from's

        var q = from table in dbServer.Tables
                where !table.IsSet
                from refer in table.References
                where refer.PrimaryTable == "myTable"
                select table;