if (isset($fields['week_start'])) $week_start_part = ', week_start = '.intval($fields['week_start']);
if (isset($fields['tracking_mode'])) $tracking_mode_part = ', tracking_mode = '.intval($fields['tracking_mode']);
if (isset($fields['record_type'])) $record_type_part = ', record_type = '.intval($fields['record_type']);
if (isset($fields['week_start'])) $week_start_part = ', week_start = '.intval($fields['week_start']);
if (isset($fields['tracking_mode'])) $tracking_mode_part = ', tracking_mode = '.intval($fields['tracking_mode']);
if (isset($fields['record_type'])) $record_type_part = ', record_type = '.intval($fields['record_type']);