How to use sql query?

I’m not sure if my reply really address your question, so be patient if not! :slight_smile:

use Cake\Datasource\ConnectionManager;

and then
$conn = ConnectionManager::get(‘default’);

    $results = $conn->newQuery()
                  ->select('abc')
                  ->from('TSpec')
                  ->where(['SC =' => '169/02'])
                  ->execute()
                  ->fetchAll('assoc');

or if you prefer:

   $query = "select abc from TSpec where SC='169/02'";
   $results = $this->conn->execute($query)->fetchAll('assoc');