Yii - activeRecord - with adds an automatic orderby clause - activerecord

Question

I try to find out why and where "orderBy" clause is added when I do a with (CDCriteria) but nothing on the Internet and unable to find in the code..
I have 3 tables defining place types (id, name for each):
Category > Activity > Specialty
I have a table place :
id | name | place_type_id | place_type_spe_id
I have several defined relations in Place model:
public function relations() {
return array(
'placeType' => array(self::BELONGS_TO, 'PlaceType', 'place_type_id'),
'placeTypeSpecialty' => array(self::BELONGS_TO, 'PlaceTypeSpecialty', 'place_type_specialty_id'),
);
}
Defined relations in PlaceType (actiivty) model :
public function relations() {
return array(
'places' => array(self::MANY_MANY, 'Place', 'place_secondary_type(place_type_id, place_id)'),
'placeTypeCategory' => array(self::BELONGS_TO, 'PlaceTypeCategory', 'place_type_category_id'),
'placeTypeSpecialties' => array(self::HAS_MANY, 'PlaceTypeSpecialty', 'place_type_id'),
);
I would like to search keywords in place name, relative activity name, relative specialty name and relative category name (depending on activity..).
I tried :
$criteria = new CDbCriteria();
$criteria->with = array('placeType', 'placeType.placeTypeSpecialties', 'placeType.placeTypeCategory');
$criteria->together = true;
$words = StringHelper::parseKeywords($keywords);
$keywordsCriteria = new CDbCriteria();
foreach ($words as $w) {
$wordCriteria = new CDbCriteria();
$wordCriteria->compare('t.name', $w, true, 'OR');
$wordCriteria->compare('placeTypeCategory.name', $w, true, 'OR');
$wordCriteria->compare('placeTypeCategory.expression', $w, true, 'OR');
$wordCriteria->compare('placeType.name', $w, true, 'OR');
$wordCriteria->compare('placeType.common_words', $w, true, 'OR');
$wordCriteria->compare('placeTypeSpecialties.name', $w, true, 'OR');
$keywordsCriteria->mergeWith($wordCriteria, 'OR');
}
$criteria->mergeWith($keywordsCriteria);
$this->getDbCriteria()->mergeWith($criteria);
return $this;
But... SQL query failed because of :
SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'name' in order clause is ambiguous.
And the ORDER BY clause is :
ORDER BY distance ASC, placeType.name ASC, name ASC
"name" is obviously ambigous but I dont' want to order by this field ! Adding $criteria->with = array('placeType.placeTypeCategory'); adds this order by clause..
My questions are :
Why this is added and how to ignore it..
Thanks

Answer 1

I found out the problem.
The previous developper has added, in PlaceTypeCategory model, a defaultScope function :
public function defaultScope()
{
return array(
'order' => 'name ASC'
);
}
I did not know this possibility.