Codeigniter active record with several like or?

问题

Hey.. I've run into a problem using several "like" in my sql-query (generated with Codeigniter's activerecord):

SELECT * FROM (`posts`) WHERE `city` LIKE '%test%' AND `title` LIKE '%%' OR `text` LIKE '%%'

Thing is, it appears to read this query as if there was a parenthesis around the first like and the second like, but I want there to be a parenthesis around the second and the last like (I want it to compare if the last or the next to last works).

How can I achieve this using Codeigniter's Active Record class?

Current code: if($type != 0) $this->db->where('type', $type);

    $this->db->like('city', $area);
    $this->db->like('title', $words);
    $this->db->or_like('text', $words);

    return $this->db->get('posts')->result_array();

回答1:

I don't think CI is adding any paranthesis. It will add an 'AND' between the first two statements and an 'OR' between the last two. To achieve what you want, I would write my own statement. It's very straightforward.

$sql = SELECT * FROM 'posts' WHERE city LIKE ? AND ( title LIKE ? OR text LIKE ? );
$query = $this->db->query($sql, array($area, $words, $words));

Notice how I've used binding. This automatically escapes characters for you.

回答2:

Previous answer is correct. I would like to add the following...

In Codeigniter supporting the following overall...

$this->db->like();
$this->db->or_like();
$this->db->not_like();
$this->db->or_not_like();

Hope this will help someone.

回答3:

this will do the trick

$this->db->select('*')->from('my_table')
        ->group_start()
                ->where('a', 'a')
                ->or_group_start()
                        ->where('b', 'b')
                        ->where('c', 'c')
                ->group_end()
        ->group_end()
        ->where('d', 'd')
->get();

// Generates:
// SELECT * FROM (`my_table`) WHERE ( `a` = 'a' OR ( `b` = 'b' AND `c` = 'c' ) ) AND `d` = 'd'

回答4:

when you have to use table join as well try following method

public function get_all_airports($para) {

        $this->db->select('airports.name as air_name, airports.city, airports.type, airports.home_link, country.name as con_name');
        $this->db->from('airports');

        $this->db->join('country', 'airports.iso_country = country.code', 'inner');

        $this->db->where("airports.type !=", "small_airport");
        $this->db->where("airports.type !=", "closed");
        $this->db->where("airports.type !=", "heliport");
        $this->db->where("airports.type !=", "medium_airport");
        $this->db->where("airports.type !=", "seaplane_base");

        $where = "(country.name LIKE '%$para%' OR airports.city LIKE '%$para%')";
        $this->db->where($where);

        echo json_encode($this->db->limit(20)->get()->result());
    }

来源：https://stackoverflow.com/questions/3489399/codeigniter-active-record-with-several-like-or

标签

activerecord

codeigniter

mysql