title: BIRT Report Error "Failed to prepare the query execution for the data set"
body: <p>Hi I am getting the below exception</p>
  
  <pre><code>org.eclipse.datatools.connectivity.oda.OdaException: Query command is not valid.
      at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.populateDimension(DataRequestSessionImpl.java:1358)
      at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.populateDimensions(DataRequestSessionImpl.java:1204)
      at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.createCube(DataRequestSessionImpl.java:797)
      at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.materializeCube(DataRequestSessionImpl.java:739)
      ... 47 more
  Caused by: org.eclipse.birt.report.data.adapter.api.AdapterException: Failed to prepare the query execution for the data set
  </code></pre>
  
  <p>I am new to BIRT Report, not sure why this error is getting generated.</p>