yii - yii2 中的 LEFT join AND 命令

Question

我想在 yii2 中写一个查询
我不知道怎么写
我从文档中尝试了一些东西，但它不起作用
这是我的查询

SELECT notification.*,event.title,user.firstname,user.lastname FROM notification 
LEFT JOIN event ON event.id = notification.source_id 
AND notification.activity_type = "checkin"
Where user.firstname in (select id from user where user_id=1) 
LEFT JOIN user ON user.id = notification.source_id 
AND notification.activity_type = "friend" 
Where user.firstname in (select id from user where user_id=1)

这是我现在编写的查询，我需要添加 AND 函数，就像它在查询中一样

    $query  ->select(['notification.*,event.title,user.firstname,user.lastname'])
            ->from('notification')
            ->leftJoin('event', 'event.id = notification.source_id')
            ->leftJoin('user', 'user.id = notification.source_id');

Answer 1

您是否尝试过以下操作:

$query  ->select(['notification.*,event.title,user.firstname,user.lastname'])
            ->from('notification')
            ->leftJoin('event', 'event.id = notification.source_id AND notification.activity_type = "checkin" ')
            ->leftJoin('user', 'user.id = notification.source_id AND notification.activity_type = "friend"');