phpmysqlcodeigniterdistinctcounting

How To count distinct values with a CodeIgniter query?

I'm trying to retrieve a count of all unique values in a field.

Example SQL:

SELECT count(distinct accessid) FROM (`accesslog`) WHERE record = '123'

How can I do this kind of query inside of CodeIgniter?

I know I can use $this->db->query(), and write my own SQL query, but I have other requirements that I want to use $this->db->where() for. If I use ->query() though I have to write the whole query myself.

Solution 
  • $record = '123';

$this->db->distinct();

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

$this->db->where('record', $record); 

$query = $this->db->get('accesslog');

    then

    $query->num_rows();

    should go a long way towards it.