按低，中，高顺序排列一列？

Question

所以，我有这样的：

select ticket_trackingno, ticket_title, ticket_priority_id, ticket_status_id 
from hd_tickets 
where ticket_priority_id <> 'None' 
and ticket_status_id = 'Assigned' 
order by ticket_priority_id desc 

有了这一点，因为医学杂志，低，高我ticket_priority_id列被排序。我想要的是低，中等，高。我想知道如何去做这件事？

Answer 1

ORDER BY CASE ticket_priority_id 
     WHEN 'low' THEN 1 
     WHEN 'med' THEN 2 
     WHEN 'high' THEN 3 END