title: How to create BIRT report based on multiple data sets
body: <p>I need help in creating a BIRT report;
  the situation is that I have multiple queries but the report all columns should be grouped by One column for example (Operator) Like :</p>
  
  <h2>Operator | Expr1 | Expr2 | Expr3 | Expr4 |</h2>
  
  <p>op1      | ##    | ##    | ##    | ##    |</p>
  
  <p>op2      | ##    | ##    | ##    | ##    |</p>
  
  <p>op3      | ##    | ##    | ##    | ##    |</p>
  
  <hr>
  
  <p>How can i accomplish that ?
  I 'm trying to make the Operator separate data set and put it in the first column and add a parameter in all quires i.e (where (operator = ?)) to get the Operator from the current row of operators column..But I can not attach the parameter value in each dataset to a the Operator dataset data set.
  Is this strategy right ?
  If yes .. how can I do that.
  If no, what is the correct strategy?
  Million thanks in advance,</p>