mysql - 在 CodeIgniter 中将 MySQL 查询转换为 Active Record

Question

我有这个 mysql 查询，而且我对 CodeIgniter 很陌生。如何将此 mysql 查询转换为 CodeIgniter 的 Active Record？

SELECT chp_destination, cde_name, chp_year, chp_from, chp_to, chp_budget_price_high, 
chp_medium_price_high, chp_luxury_price_high, chp_budget_price_low, chp_medium_price_low, chp_luxury_price_low, chp_timestamp, chp_comment , MAX( chp_timestamp ) AS last_updated, MAX( chp_id )
FROM crm_hotel_price
LEFT JOIN crm_destinations ON cde_id = chp_destination
GROUP BY chp_destination, chp_year
ORDER BY chp_id

Answer 1

试试这个:(Reference)

$this->db->select('chp_destination, cde_name, chp_year, chp_from, chp_to, chp_budget_price_high, chp_medium_price_high, chp_luxury_price_high, chp_budget_price_low, chp_medium_price_low, chp_luxury_price_low, chp_timestamp, chp_comment, MAX(chp_timestamp) AS last_updated, MAX(chp_id)', FALSE);
$this->db->join('crm_destinations', 'cde_id = chp_destination', 'left');
$this->db->group_by('chp_destination, chp_year');
$this->db->order_by('chp_id');
$qry = $this->db->get('crm_hotel_price');
$res = $qry->result(); // or $qry->result_array();