On 5/12/07, Frank Bax <[EMAIL PROTECTED]> wrote:
At 07:40 PM 5/12/07, Andreas wrote:
>I've got a stack of tasks to show in a list.
>Every task has a timestamp X that may be NULL or a date. It contains the
>date when this tasks should be done.
>Sometimes it has date and the time-part, too.
>
>
>The list should be like this:
>1) X sometime today should come first in ascending time order.
>2) X in the past should show up after (1) in descending order so that
>not so long back dates come first
>3) X = NULL
>4) X sometime in the future
>
>Could you provide a clever solution?
ORDER BY CASE WHEN X=today THEN 1 ELSE
CASE WHEN X<today THEN 2 ELSE
CASE WHEN X IS NULL THEN 3 ELSE
CASE WHEN X>today THEN 4 ELSE 5 END END END END
Less verbose:
ORDER BY CASE
WHEN x = today THEN 1
WHEN x < today THEN 2
WHEN x IS NULL THEN 3
WHEN x > today THEN 4
ELSE 5
END
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