Re: CASE in ORDER BY clause

Louis-David Mitterrand wrote:
> Hi,
>
> I am trying the following:
>
> 	critik=# select start_date from show_date order by case when start_date > CURRENT_DATE then start_date desc else start_date asc end;
> 	ERROR:  syntax error at or near "desc"
> 	LINE 1: ...se when start_date > CURRENT_DATE then start_date desc else 
> 	...
>
> If I remove the "desc" and "asc" then the quey is accepted but doesn't 
> do what I want.
>
> OTOH if I try:
>
> 	critik=# select start_date from show_date order by start_date case when start_date > CURRENT_DATE then desc else asc end;
> 	ERROR:  syntax error at or near "case"
> 	LINE 1: ...ect start_date from show_date order by start_date case when ...
>
> How can i order ASC or DESC depending on a condition?
>
> Thanks,
>
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Try this:

# select start_date from show_date 
# order by 
# case when start_date > CURRENT_DATE then start_date end desc,
#      when start_date <= CURRENT_DATE then start_date end asc;