bez Dynamic SQL każda opcja to klauzula, na przykład:
ORDER BY
case when @var1 = 'priority asc' THEN priority END ASC ,
case when @var1 = 'priority desc' then priority end DESC,
case when @var2 = 'report_date asc' then report_date end ASC,
case when @var2 = 'report_date desc' then report_date end DESC
