Php 如何在Codeigniter中使用相关子查询进行活动记录查询

我正在努力从不同的表格中获取客户详细信息。我已经创建并测试了这个查询，它运行良好。问题是用户如何将此查询转换为活动记录查询。谢谢你

            SELECT c.cust_id, `c`.`cust_contact_name`, `c`.`cust_active_flag`, 
            (select COUNT(`pm`.`cust_id`)  from property_master as pm 
            Where pm.cust_id = c.cust_id) as prop_count,
            (select a.addr_phoneno1 from address as a
            WHERE a.cust_id = c.cust_id AND a.addr_type_flag IN ('C', 'CP')) as cust_phone,
            (select count(ci.cust_id) from customer_inquiry as ci
            WHERE ci.cust_id = c.cust_id) as inquiry_count,
            (select max(inq_date) from customer_inquiry as ci
            WHERE ci.cust_id = c.cust_id) as last_inq_date
            FROM customer as c
            GROUP BY c.cust_ID

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CodeIgniter活动记录类不直接支持子查询。您可以使用任何第三方库，如或

$this->db->query（）

以执行查询

不过，您可以使用以下方法。但是我建议使用

$this->db->query（）

谢谢@Bikram，但我正在寻找除直接使用查询之外的其他选项。您可以使用任何第三方CI库。您能推荐任何人或直接链接查看吗？我已更新了答案，其中有一个库的链接。@hekmat您能帮上忙吗，先生
$this->db->select('c.cust_id, `c`.`cust_contact_name`, `c`.`cust_active_flag`, 
            (select COUNT(`pm`.`cust_id`)  from property_master as pm ' Where pm.cust_id = c.cust_id) as prop_count, (select a.addr_phoneno1 from address as a
            WHERE a.cust_id = c.cust_id AND a.addr_type_flag IN ('C', 'CP')) as cust_phone,
            (select count(ci.cust_id) from customer_inquiry as ci
            WHERE ci.cust_id = c.cust_id) as inquiry_count,
            (select max(inq_date) from customer_inquiry as ci
            WHERE ci.cust_id = c.cust_id) as last_inq_date)
         ->from('customer c');
$this->db->group_by('c.cust_ID');
$result = $this->db->get();