Codeigniter 3-从一个表计数行并联接

Question

I am trying to join two table and count all results from messageFiles which are related to message I have tables with following structure:

messages :

id
name
email
subject
message
date_added
read

messagesFiles

id
name
message_id
date_added

I am trying this code, but I always get result countFiles = 1 and I message is repeated for every file that is related to it (for example if I have 3 files for the message, it will be repeated 3 times). Also messages which doesn't have files will not be selected by this query. What's seems to be a problem?

$this->db->select("SQL_CALC_FOUND_ROWS *, messages.*, COUNT(messagesFiles.id) as countFiles", FALSE)->from('messages')
        ->join('messagesFiles', "messagesFiles.message_id = messages.id")
        ->where("messages.read", 1)
        ->group_by('messagesFiles.id')->get()->result_array();

Answer 1

You could try some thing like this code below and add return $this->db->count_all_results() .

http://www.codeigniter.com/docs

http://www.codeigniter.com/userguide2/database/active_record.html

public function count_test() {
    $this->db->select("*");
    $this->db->from('category c');
    $this->db->join('category_description cd', "cd.category_id = c.category_id");
    return $this->db->count_all_results();
}