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Dynamic ordering without dynamic sql (See related posts) 

DECLARE @order int
SET @order = 1
SELECT * FROM users
ORDER BY 
        CASE WHEN @order = 1 THEN [name] END DESC,
        CASE WHEN @order = 2 THEN [name] END ASC,
        CASE WHEN @order = 3 THEN [email] END DESC,
        CASE WHEN @order = 4 THEN [email] END ASC

set the @order to 1-4 to get specific order by clause, setting it to anything else give results as if no order by clause supplied

remember dynamic SQL (creating SQL in a string and then executing) can not be effectively cached so this is a much better option
to sql tsql by purplefeet on Tue Dec 06 13:54:43 +0000 2005

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