title: How do Microsoft reports (RDL) query the data?
body: <p>I am not creating RDL from scratch so maybe this is a problem -- I work on already prepared files. </p>
  
  <p>MSDN states that CommandText in RDL file can contain T-SQL query. Ok, this I understand, but what else it can contains?</p>
  
  <p>I am asking because the phrasing clearly indicates you can put some other expression there
  So if I understand correctly, I can look at RDL code (in Visual Studio, RMB on RDL file, "view code") and the interesting parts would be...?</p>
  
  <ul>
  <li>DataSourceName -- this is a "link" to database via definitions of data sources</li>
  <li>CommandText -- I thought this is the place to put query, like SELECT... but from what I see there are no queries used</li>
  </ul>