codeigniter active record 여러 select 문 결합

Question

활성 레코드에서 아래의 쿼리와 같은 여러 선택에 참여하는 것에 대한 참조를 찾을 수 없습니까?

select a1.act, a1.date, a2.clos 
from 
(
SELECT count(AccountActiveDate) act, DATE_FORMAT(AccountActiveDate, '%Y-%m') date 
FROM customert cust 
GROUP BY YEAR(AccountActiveDate) , MONTH(AccountActiveDate) 
) a1 
join 
(
SELECT count(AccountClosedDate) clos, DATE_FORMAT(AccountClosedDate, '%Y-%m') date 
FROM customert cust2 
GROUP BY YEAR(AccountClosedDate) , MONTH(AccountClosedDate) 
) a2 
ON a1.date = a2.date 

Answer 1

이 같은 당신에게 SQL 문자열을 넣을 수 있습니다 :

$this->db->query('YOUR QUERY HERE') 

예 :

$this->db->query('SELECT * FROM tbl_users WHERE age > 18');