To cut a long story short: Is it possible and if it is - how can I build a query that looks somewhat like this one
SELECT * FROM a
WHERE row = 1 AND
$this->db->where('salary_range_min >= ',$salarymin)
$this->db->where('salary_range_max <= ',$salarymax)
$this->db->where('job_title like '.$title.'% or skill like %'.$title.'%');
// OR */
$this->db->where('job_title like '.$title.'% or skill like %'.$title.'%',FALSE);
// OR */
$this->db->where('job_title like '.$title.'% or skill like %'.$title.'%',NULL);
Try this out