agroup 2 OR之後和codeigniter

Question

問候！，我有一個小問題，這個SQL查詢，我需要連接幾個「或」的括號。我不知道該怎麼做..所以這是例如：

SELECT a.a1, b.b1, c.c1 from a inner join b on a.a1=b.b1 inner join c on a.a1 = c.c1 where c.c2='t' and (a.a1 like %XXXX% or b.b1 like %XXXX%) 

而且這是我笨上寫代碼

$this->db->select("a.a1, b.b1, c.c1"); 
$this->db->where("c.c2",'t'); 
$this->db->like("a.a1", $match); 
$this->db->or_like("b.b1", $match); 
$this->db->join("b","a.a1 = b.b1",'inner'); 
$this->db->join("c","a.a1 =c.c1",'inner'); 

但這是輸出，顯然不是我想要什麼

SELECT a.a1, b.b1, c.c1 from a inner join b on a.a1=b.b1 inner join c on : a.a1 = c.c1 where c.c2='t' and a.a1 like %XXXX% or b.b1 like %XXXX% 

Answer 1

$this->db->select("a.a1, b.b1, c.c1"); 
$this->db->where("c.c2",'t'); 
$this->db->group_start(); // (
$this->db->like("a.a1", $match); 
$this->db->or_like("b.b1", $match); 
$this->db->group_end(); //) 
$this->db->join("b","a.a1 = b.b1",'inner'); 
$this->db->join("c","a.a1 =c.c1",'inner');