SQL orderby/case problème: orderdirection échoue

Question

J'ai obtenu une procédure stockée qui fournit une table d'étudiants, et il doit commander par nom de famille, nom etc ... il faut aussi trier ascendant, descendant, en fonction du paramètre @ orderby ...

Code:

ORDER BY 
CASE 
WHEN @orderby = 'studentkey' THEN Studentkey END ASC, 
CASE 
WHEN @orderby = 'studentkey' and @desc = 1 THEN Studentkey END DESC, 
CASE 
WHEN @orderby = 'initials' THEN Initials END ASC, 
CASE 
WHEN @orderby = 'initials' and @desc = 1 THEN Initials END DESC, 
CASE 
WHEN @orderby = 'firstname' THEN Firstname END ASC, 
CASE 
WHEN @orderby = 'firstname' and @desc = 1 THEN Firstname END DESC, 
CASE 
WHEN @orderby = 'nickname' THEN Nickname END ASC, 
CASE 
WHEN @orderby = 'nickname' and @desc = 1 THEN Nickname END DESC, 
CASE 
WHEN @orderby = 'insertion' THEN Insertion END ASC, 
CASE 
WHEN @orderby = 'insertion' and @desc = 1 THEN Insertion END DESC, 
CASE 
WHEN @orderby = 'surname' THEN Surname END ASC, 
CASE 
WHEN @orderby = 'surname' and @desc = 1 THEN Surname END DESC 
NED

Il y a une différence entre la production @desc = 1 et @desc = 0, mais pas ce que je désire ...

quelqu'un at-il un Solution?

Answer 1

Essayez ceci:

CASE 
WHEN @orderby = 'studentkey' and @desc = 0 THEN Studentkey END ASC, 
CASE 
WHEN @orderby = 'studentkey' and @desc = 1 THEN Studentkey END DESC, 
...