Question

I would like how to use UNION ALL on CActiveDataProvider criteria.

Table Example:

ID    NAME
1     John

Query Example:

SELECT * FROM users 
  UNION ALL 
SELECT * FROM users

Response:

ID    NAME
1     John
1     John

Answer 1

It sems that CDbCriteria doesn’t handle the UNION ALL

Instead you could use the CSqlDataProvider class

$sql='SELECT * FROM tbl_user UNION ALL SELECT * FROM tbl_user ';
$dataProvider=new CSqlDataProvider($sql, array(
    'totalItemCount'=>$count,
    'sort'=>array(
        'attributes'=>array(
             'id', 'username', 'email',
        ),
    ),
    'pagination'=>array(
        'pageSize'=>10,
    ),
));
// $dataProvider->getData() will return a list of arrays.