combining mysql AND OR queries in Codeigniter

Question

I want to combine AND OR mysql queries in CI. I have already seen this thread: http://codeigniter.com/forums/viewthread/92818/. But they don\'t provide the exact solution th

Answer 1

I needed this for CodeIgniter 2, but I needed the values still escaped so csotelo's answer wasn't good for me and I didn't want to rewrite the whole query like Shawn C's answer, so I ended up doing this:

$this->db->where('LastName', $lastName);
$this->db->where('Age', $age, false);
$this->db->where('1 AND ( 0', null, false); // This one starts the group
  $this->db->or_where('FirstName', $firstName1);
  $this->db->or_where('FirstName', $firstName2);
  $this->db->or_where('Gender', $gender);
  $this->db->or_where('Country', $country);
$this->db->or_where('0 )', null, false); // This one ends the group
$query = $this->db->get('Persons');

Which generates the following query:

SELECT *
FROM (`Persons`)
WHERE `LastName` =  'Svendson'
AND Age = 12
AND 1 AND ( 0 -- This one starts the group
OR `FirstName` =  'Tove'
OR `FirstName` =  'Ola'
OR `Gender` =  'M'
OR `Country` =  'India'
OR 0 ) -- This one ends the group

Which would be the same as this:

SELECT * FROM (`Persons`) WHERE
`LastName` = 'Svendson' AND Age = 12 AND 1 AND
(0 OR `FirstName` = 'Tove' OR `FirstName` = 'Ola' OR `Gender` = 'M' OR `Country` = 'India' OR 0)

Answer 2

and this will work?

$this->db->where('LastName', 'Svendson');
$this->db->where('Age', 12);
$this->db->where("(FirstName='Tove' OR FirstName='Ola' OR Gender='M' OR Country='India')", NULL, FALSE);
$query = $this->db->get('Persons');
return $query->result();

Answer 3

In Codeigniter we can use like this it easy to understand.

$sql = "SELECT
            *
        FROM
            `Persons`
        WHERE
            LastName = 'Svendson'
        AND Age = '12'
        AND (
            FirstName = 'Tove'
            OR FirstName = 'Ola'
            OR Gender = 'M'
            OR Country = 'India'
        )";

$query = $this->db->query($sql);

return $query->result();