使用LINQ to SQL和动态表

I am trying to migrate an old project to using LINQ but I have run into a pretty major problem. The problem is we have dynamic tables for search indexing (CM-system with dynamic attributes). The search index has columns for each searchable attribute { attribute_x, attribute_y, ... }. Now the problem is I cannot statically define which columns are available (or even which table to use as we divide search indexes), so I need a way to do this on the fly.I am trying to migrate an old project to using