title: Expand in odata
body: <p>I have two tables:</p>
  
  <pre><code>T1 with attributes: commonG, g1, g3,g7,g8
  T2 with attributes: commonG, g2,g5,g6
  </code></pre>
  
  <p>WHERE T1.commonG is same as T2.commonG,
  for this query:</p>
  
  <pre><code>select t1.commonG, T1.g1, T2.g2
  from T1 and T2
  where T1.g3=777 and T1.commonG=T2.commonG
  </code></pre>
  
  <p>so I want to access this select data using an <strong>odataquery</strong>  for some g3 value.</p>