title: SQL - Many to Many relations
body: <p>I got these 3 tables </p>
  
  <p>tblDocument(DocId, DocName) tblSubPerson(DocId, PersonId) and tblPerson(PersonId, PersonName)</p>
  
  <p>i'm trying to write a mssql query where i want to return all the documents ind tblDocument which  person with eksample PersonID = 1 has an relation to</p>
  
  <p>Hope you can help me. </p>