I want to learn CodeIgniter, with an example case like this:
I have a database (tbl_points)
And I have an output like this:
id | sku | point |
---|---|---|
1 | 001 | 10 |
2 | 001 | -1 |
3 | 002 | 5 |
4 | 002 | -2 |
5 | 001 | -1 |
I'm having a hard time making groups based on SKUs and then adding up each value at that point. Can you help me to make it like this? Thank you very much.
id | sku | point |
---|---|---|
1 | 001 | 8 |
2 | 002 | 3 |
If you want to write query for ci3.
$this->db->select('sku');
$this->db->select_sum('point');
$this->db->from('tbl_points');
$this->db->group_by('sku');
$query = $this->db->get();
$row = $query->result();
print_r($row);