/**
  * This function generates a "IN" query for a given array
  * 
  * @global object $wpdb
  * @param string    $model_identifier 
  * @param string    $column_to_search   name of the column to search for the values in the array
  * @param array     $types_array        array of values.
  * @return array
  */
 public static function get_results_for_array($model_identifier, $column_to_search, array $types_array)
 {
     global $wpdb;
     $table_name = RM_Table_Tech::get_table_name_for($model_identifier);
     $qry = "SELECT * FROM `{$table_name}` WHERE `{$column_to_search}` IN (";
     $i = 0;
     foreach ($types_array as $type) {
         if ($i != 0) {
             $qry .= ",";
         }
         $qry .= "'{$type}'";
         $i++;
     }
     $qry .= ")";
     $result = $wpdb->get_results($qry);
     return $result;
 }