$record = '123';$this->db->distinct();$this->db->select('accessid');$this->db->where('record', $record);$query = $this->db->get('accesslog');然后
$query->num_rows();
应该走很长的路要走。

$record = '123';$this->db->distinct();$this->db->select('accessid');$this->db->where('record', $record);$query = $this->db->get('accesslog');然后
$query->num_rows();
应该走很长的路要走。