Get the result of SUM and group field from Active record in Codeigniter

Question

I need to build this query in Codeigniter but I don\'t know how to get the result of the SUM:

SELECT 
    description, SUM(amount)
FROM
    PAYMENT
WHERE
            


        

Answer 1

try something like this:

$query = $this->db->select_sum('amount', 'Amount');
$query = $this->db->where(...)
$query = $this->db->get('payment');
$result = $query->result();

return $result[0]->Amount;