Nette\Database\Connection::fetch PHP Method

    public function fetch($sql, ...$params)
    {
        return $this->query($sql, ...$params)->fetch();
    }

 public function setTranslation($original, $translated, $lang, $variant = 0, $namespace = NULL)
 {
     $arg = array();
     $arg[0] = "SELECT `id` FROM {$this->defaultTable} WHERE ";
     if ($namespace) {
         $arg[0] .= '`ns` = ? AND ';
         $arg[] = $namespace;
     }
     $arg[0] .= "BINARY `text` = ?";
     $arg[] = $original;
     $textId = $this->fetchField($arg);
     if ($textId) {
         $id = $this->fetchField(array("\n\t\t\t\tSELECT `id` FROM {$this->translationTable}\n\t\t\t\tWHERE `text_id` = ? AND `lang` = ? AND `variant` = ?", $textId, $lang, $variant));
     }
     if ($textId && $id) {
         $this->db->query("UPDATE {$this->translationTable} SET translation = ? WHERE id = ?", $translated, $id);
     } else {
         if (!$textId) {
             $data = array('text' => $original);
             if ($namespace) {
                 $data['ns'] = $namespace;
             }
             $this->db->query("INSERT INTO {$this->defaultTable} ?", $data);
             $textId = $this->db->fetch("SELECT LAST_INSERT_ID() id")->id;
         }
         $this->db->query("INSERT INTO {$this->translationTable} ?", array('text_id' => $textId, 'lang' => $lang, 'variant' => $variant, 'translation' => $translated));
     }
 }