Setting the 'Order By' Clause from plsql procedure parameters

What is t开发者_Go百科he best way to dynamically set the 'order by' column name and direction from parameters passed in to a plsql procedure?

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You can use variables if you order using a case:

select  *
from    YourTable
order by
        case when par_name = '1' then col1
             when par_name = '2' then col2
        end
,       case when par_name = '3' then col3
        end desc

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use dynamic sql

http://download.oracle.com/docs/cd/B10500_01/appdev.920/a96590/adg09dyn.htm