CodeIgniter - query binding “IN” parameter

问题:

I have a following query in my CodeIgniter, which I'm trying to bind via parameter.

$q = "SELECT * FROM my_table WHERE id IN (?)"
$ids = "1,2,3,4";
$this->db->query($q, array($ids));

Above is not working, because the query binding treats $ids as string. How can I parameterize my query, but still be able to do "IN" operation?

EDIT

sorry, I have to use "raw SQL query". Above query is just a part of a much larger + complex query, which I can't use ActiveRecord for. Also I'm using Postgres.

回答1:

Instead of string put it in array

$q = "SELECT * FROM my_table WHERE id IN (?)"
$ids =  array(1,2,3,4);
$this->db->query($q, $ids);

You can achieve same thing like this without binding

Alternative

$ids =  array(1,2,3,4);
$this->db->where_in('id',$ids);
$this->db->get('my_table');

回答2:

Try this with where_in

$ids = array(1,2,3,4);
$this->db->select('*');
$this->db->from('my_Table');
$this->db->where_in('id',$ids);

回答3:

$this->db->query($q, explode(',', $ids));

or

$this->db->where_in('id', explode(',', $ids))->get('my_table');

Active Records documentation: http://ellislab.com/codeigniter/user-guide/database/active_record.html#select

回答4:

Use FIND_IN_SET like this

select * from table where FIND_IN_SET('$ids', id);

回答5:

Try this code:

$ids = "('1','2','3','4')";
$q = "SELECT * FROM my_table WHERE id IN ".$ids;
$this->db->query($q);

you should use the

$ids = array('1','2','3','4');
$this->db->where_in('id', $ids);

The where_in is used in codignitor.

回答6:

point is

$ids = "1,2,3,4";
$a = array($ids);
//$a[0] = "1,2,3,4";

//not  $a[0]=1;$a[1]=2;$a[2]=3;$a[3]=4;

want to keep your style

 $ids = "1,2,3,4";
$a = explode(",",$ids);

回答7:

$q = "SELECT * FROM my_table WHERE id IN ?"
$ids = "1,2,3,4";
$this->db->query($q, explode(",", $ids));