php - Codeigniter Fatal Error Call to a member function result() on boolean -

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i have been having problem query results in following error

php fatal error:  call member function result() on boolean on line 200

i'v had no problems other queries, on 1 have query within query, following:

$this->load->helper('date'); $datestring = "%y-%m-%d"; $time = strtotime('yesterday'); $date= mdate($datestring, $time);  $db = $this->load->database('macs', true);  $query = $db->query("select temp1.user packer, count(temp1.[order]) orders (select audit.user, audit.[order] audit audit.date > '$date' , (audit.type='i11' or audit.type =' 11') group audit.date, audit.type, audit.user, audit.[order]) temp1 group temp1.user order count(temp1.[order]) desc");  return $query->result(); $macsdb->close();

this works correctly in access (the above conversion of access query). query starts work (incorrectly however) when referencing useris removed , works when user replaced field such company. causing query not working user?

i ran query without putting return , got syntax error. problem regarding user had become [user]


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