CodeIgniter - ActiveRecord order_by（）应用于所有查询，而不仅仅是我想要的查询

Question

Probably quite a simple one, but I'm not having any luck in the docs or searches.

I'm trying to add an order by clause to just one of my ActiveRecord queries as follows:

$result = $this->db->get('mytable');
$this->db->order_by('age', 'ASC');

It works, however I get errors because the order by clause is being applied to all my other queries and I get errors because my age column is not present in all tables.

So how do it limit $this->db->order_by('age', 'ASC') to just that one specific query?

Thanks.

Answer 1

You should have $this->db->order_by(); before $result = $this->db->get('mytable');

Answer 2

It should be in this format

$this->db->where("tablename.column", $task_id);
$this->db->order_by('tablename.column', 'ASC'); // or 'DESC'
$this->db->from('table');