codeigniter Mysql join查询结果

Question

I have three tables. users, products (user_id is foreign key), reviews_ratings (user_id & product_id are foreign keys)

mysql query is

$pid = some id;
$this->db->select('*');
$this->db->from('reviews_ratings');
$this->db->join('users', 'users.id = reviews_ratings.user_id');
$this->db->join('products', 'products.id = reviews_ratings.product_id ');
$this->db->where('reviews_ratings.id >', $pid);
$this->db->order_by('reviews_ratings.id', 'DESC');
$this->db->limit(1);

In result,

Array ( [0] => stdClass Object ( [id] => 14 [title] => blaaa [review] => blaaaa [rate] => 4 soooo on))

[id]=>14 is not the id of review_ratings table. 14 is the product_id. everything is good except this [id] value. i want review_ratings id value in [id] . please help me to correct it.

Answer 1

Try to use group by...

$pid = some id;
$this->db->select('*');
$this->db->from('reviews_ratings');
$this->db->join('users', 'users.id = reviews_ratings.user_id');
$this->db->join('products', 'products.id = reviews_ratings.product_id ');
$this->db->where('reviews_ratings.id >', $pid);
$this->db->order_by('reviews_ratings.id', 'DESC');
$this->db->group_by('reviews_ratings.id');
$this->db->limit(1);

Answer 2

Problem solved by adding this line

$this->db->select('products.*,users.*,reviews_ratings.*');

instead of this

  $this->db->select('*');