CActive

gistfile1.txt

$dataProviderSt = new CActiveDataProvider('VehicleLogbookTbl', array(
    'criteria'=>array(
        'select'=>'t.vehId, SUM(t.finalReading - t.iniReading) AS TMilg',
        'group'=>'project.id',
        'condition'=>'t.vehId=10',
        //'order'=>'create_time DESC',
        'with'=>array('project'),
    ),
    'pagination'=>false,
));