我有一个表'order'看起来有点像这样:
order_id parent_id item
14056 14054 Cheese
14055 14054 Butter
14054 NULL Bread
现在,当我有订单id = 14055时,我想返回所有相关的行。如果order_id = 14056或14054,则相同。
答案 0 :(得分:2)
我认为这会奏效:
解决方案1
定义Orders
模型中的关系:
/**
* @return \yii\db\ActiveQuery
*/
public function getParent()
{
return $this->hasOne(Orders::className(), ['order_id' => 'parent_id']);
}
/**
* @return \yii\db\ActiveQuery
*/
public function getOrders()
{
return $this->hasMany(Orders::className(), ['parent_id' => 'order_id']);
}
然后你可以运行以下内容:
$data = Orders::find()
->from('orders orders')
->joinWith('parent parent')
->where(['parent.order_id' => 14054])
->all();
生成的SQL是:
SELECT `orders`.*
FROM `orders` `orders`
LEFT JOIN `orders` parent
ON `orders`.`parent_id` = `parent`.`order_id`
WHERE `parent`.`order_id`= 14054
解决方案2
如果没有关系,你可以这样:
$sub_query = Orders::find()
->select(['order_id'])
->where(['order_id' => 14054]);
$query = Orders::find()->where(['in', 'parent_id', $sub_query]);
$data = $query->all();
解决方案3
使用嵌套查询:
$sub_query = Orders::find()
->select(['order_id'])
->where(['order_id' => 14054]);
$query = Orders::find()
->from('orders orders');
$query->innerJoin(['parent' => $sub_query], 'orders.parent_id = parent.order_id');
$data = $query->all();
生成的SQL如下:
SELECT `orders1`.*
FROM `orders` `orders1`
INNER JOIN (
SELECT `order_id` FROM `orders` WHERE `order_id` = 14054
) `parent`
ON orders.parent_id = parent.order_id
解决方案4
我认为以下内容也会起作用:
在inverted
模型中定义新的Orders
关系:
public function getOrders1()
{
return $this->hasMany(Orders::className(), ['parent_id' => 'order_id'])->inverseOf('orders');
}
现在运行查询:
$data = Orders::find()
->with(['orders1'])
->all();
关于倒置关系的更多信息here。