嗨，我有以下查询结果：
public function getCityCategory($city_id)
{
$select = $this->getDbTable()->getAdapter()->select();
$select->from('business as b', array('b.cat_id'))
->joinInner('business_category as bc','b.cat_id = bc.cat_id',array('bc.cat_name'))
->where('b.city_id='.$city_id);
$result = $this->getDbTable()->getAdapter()->fetchAll($select);
return $result;
}
Array
(
[0] => Array
(
[cat_id] => 1
[cat_name] => Restaurants
)
[1] => Array
(
[cat_id] => 1
[cat_name] => Restaurants
)
[2] => Array
(
[cat_id] => 1
[cat_name] => Restaurants
)
[3] => Array
(
[cat_id] => 5
[cat_name] => Arts & Entertainment
)
[4] => Array
(
[cat_id] => 11
[cat_name] => Hotels & Travel
)
[5] => Array
(
[cat_id] => 7
[cat_name] => Nightlife
)
[6] => Array
(
[cat_id] => 20
[cat_name] => Financial Services
)
[7] => Array
(
[cat_id] => 22
[cat_name] => Attractions
)
[8] => Array
(
[cat_id] => 2
[cat_name] => Active Life
)
[9] => Array
(
[cat_id] => 22
[cat_name] => Attractions
)
[10] => Array
(
[cat_id] => 7
[cat_name] => Nightlife
)
[11] => Array
(
[cat_id] => 1
[cat_name] => Restaurants
)
[12] => Array
(
[cat_id] => 1
[cat_name] => Restaurants
)
)
现在，当我添加不同的上述代码时，查询返回特定的所有类别，city_id我得到以下结果：
public function getCityCategory($city_id)
{
$select = $this->getDbTable()->getAdapter()->select();
$select->from('business as b', array('b.cat_id'))
->joinInner('business_category as bc','b.cat_id = bc.cat_id',array('bc.cat_name'))
->distinct()
->where('b.city_id='.$city_id);
$result = $this->getDbTable()->getAdapter()->fetchAll($select);
return $result;
}
Array
(
[0] => Array
(
[cat_id] => 1
[cat_name] => Restaurants
)
[1] => Array
(
[cat_id] => 5
[cat_name] => Arts & Entertainment
)
[2] => Array
(
[cat_id] => 11
[cat_name] => Hotels & Travel
)
[3] => Array
(
[cat_id] => 7
[cat_name] => Nightlife
)
[4] => Array
(
[cat_id] => 20
[cat_name] => Financial Services
)
[5] => Array
(
[cat_id] => 22
[cat_name] => Attractions
)
[6] => Array
(
[cat_id] => 2
[cat_name] => Active Life
)
)
现在的问题是如何在最后一个查询中添加计数，以便我可以获得每个类别的业务总数，因为不同的删除重复类别？所以最终的结果应该是这样的
[0] => Array
(
[cat_id] => 1
[cat_name] => Restaurants
[count] => 5
) ....
谢谢