Codeigniter活动记录在/ db.field = db.field [英] Codeigniter Active Record HAVING / WHERE db.field = db.field

问题描述

有人可以告诉我，如果有活动记录，这是否可行-以及如何？

Can someone tell me, if this is possible with active record - and how??

$this->db->select('*');
$this->db->from('table1');
$this->db->join('table2', 'table1.id = table2.fi_id', 'left');
$this->db->having('table1.second_id','table2.fi_second_id', false);
$query = $this->db->get();

问题在于， table2.fi_second_id始终被视为字符串-不作为数据库字段。在哪里也尝试过-同样的问题。

The problem ist, that 'table2.fi_second_id' is always treated as a string - not as a database field. Tried this with 'where' also - it's the same problem.

Thx

推荐答案

我认为您需要以下内容：

I think that you want the following:

$this->db->having('table1.second_id = table2.fi_second_id',false);

您可以或可以不使用 false 参数，如果您不需要转义的SQL查询。

You may or may not apply the false parameter if you don't need escaped SQL queries.

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