help noob with select_sum

[eluser]smilie[/eluser]
Just read once more what vbsaltydog said;

Let me give you a hint:

[quote author="vbsaltydog" date="1327693579"]From the user guide:

Code:

$this->db->select_sum('age');
$query = $this->db->get('members');
// Produces: SELECT SUM(age) as age FROM members

You are calling the select_sum() method of the db class after you run your query using get_where() which is wrong.

[/quote]

So, hints:
- after;
- code vbsaltydog already posted from user guide...

MegaHint of the day: 'before' ;-)

Cheers,
Smilie