title: RavenDB: How to query many different documents in a single query?
body: <p>I am new to RavenDB and I'm not sure how to address this issue.</p>
  
  <p>I have a document store with around 200 different document types. Each type can contain thousands of documents.
  <br/>In my business logic all the different document types are treated the same - they can be all mapped to a generic object such as a DataTable.</p>
  
  <p>I would like to query all the properties of all the documents from all types in a single free text search. What is the best way to do that?</p>