loadGroupUtil( StreamManager.ROOT_STREAM, StreamManager.SELF_SCOPE  ),
	ExprResultSet loadExprResultSet( ) throws DataException	{		if ( streamManager.isSecondRD( ) == true				&& streamManager.isSubquery( ) == true )			return new ExprResultSet2( streamManager,					loadGroupUtil( StreamManager.ROOT_STREAM, StreamManager.SELF_SCOPE  ),					version,					streamManager.isSecondRD( ) );				return new ExprResultSet( streamManager,				loadGroupUtil( StreamManager.ROOT_STREAM, StreamManager.SELF_SCOPE ),				version,				streamManager.isSecondRD( ) );	}