Active record in codeigniter - mysql

Question

Anybody can convert this query to active record codeigniter???
SELECT b.name,
SUM(CASE WHEN c.size = 'S' THEN 1 ELSE 0 END) S,
SUM(CASE WHEN c.size = 'M' THEN 1 ELSE 0 END) M,
SUM(CASE WHEN c.size = 'L' THEN 1 ELSE 0 END) L,
SUM(CASE WHEN c.size = 'XL' THEN 1 ELSE 0 END) XL
FROM orderTB a
INNER JOIN productTB b
ON a.id_product = b.id_shirt
INNER JOIN sizeTB c
ON a.id_size = c.id_size
GROUP BY b.name
i've tried like this
function get()
{
$this->db->select("b.name,SUM(CASE WHEN c.size ='S' THEN 1 ELSE 0 END) as S,SUM(CASE WHEN c.size = 'M' THEN 1 ELSE 0 END) as M,SUM(CASE WHEN c.size = 'L' THEN 1 ELSE 0 END) as L,SUM(CASE WHEN c.size = 'XL' THEN 1 ELSE 0 END) as XL");
$this->db->from('order');
$this->db->join('ukuran','order.id_size=ukuran.id_size');
$this->db->where('date',$date);
return $this->db->get();
}
but its wrong

Answer 1

Just try this one and let me know,
$this->db->select("b.name,SUM(CASE WHEN c.size = 'S' THEN 1 ELSE 0 END) S,SUM(CASE WHEN c.size = 'M' THEN 1 ELSE 0 END) M,SUM(CASE WHEN c.size = 'L' THEN 1 ELSE 0 END) L,SUM(CASE WHEN c.size = 'XL' THEN 1 ELSE 0 END) XL", FALSE );
$this->db->from('orderTB a');
$this->db->join('productTB b','a.id_product = b.id_shirt','inner');
$this->db->join('sizeTB c','a.id_size = c.id_size','inner');
$this->db->group_by('b.name');
From document here
$this->db->select() accepts an optional second parameter. If you set
it to FALSE, CodeIgniter will not try to protect your field or table
names with backticks. This is useful if you need a compound select
statement.
EDIT
Just add FALSE in your select statement
function get() {
$this->db->select("b.name,SUM(CASE WHEN c.size ='S' THEN 1 ELSE 0 END) as S,SUM(CASE WHEN c.size = 'M' THEN 1 ELSE 0 END) as M,SUM(CASE WHEN c.size = 'L' THEN 1 ELSE 0 END) as L,SUM(CASE WHEN c.size = 'XL' THEN 1 ELSE 0 END) as XL",FALSE);
$this->db->from('order');
$this->db->join('ukuran','order.id_size=ukuran.id_size');
$this->db->where('date',$date);
return $this->db->get();
}