Re: increment/rank
От | Matt Beauregard |
---|---|
Тема | Re: increment/rank |
Дата | |
Msg-id | 20001219134901.I30281@designscape.com.au обсуждение исходный текст |
Ответ на | increment/rank ("Dan Harrington" <dan@tudan.net>) |
Список | pgsql-general |
On Tue, Dec 19, 2000 at 07:29:33PM -0700, Dan Harrington wrote: > I get a two-record list of: > ---------------------------------------------------------------------------- > - > Peaceful Stream | image/stream.jpg | water peace | 102 > Wide Stream | image/wide.jpg | water peace flowing | 101 > ---------------------------------------------------------------------------- > - > ...and I select "Wide Stream", I want to change the rank number from 101 to > 102. Your description of the problem is ambiguous, and so my answer which is very simplistic may not be useful at all. Properly set-up tables need a primary key which is unique for each record; I'm making the bold assumption that in your case the image filename will do as a primary key. So if you only want to "change the rank number" you could do something like update images set rank=102 where filename='image/wide.jpg'. If the rank field has more semantics than you mentioned in your email, you should define them for us. -- Matt Beauregard Information Technology Operations, DesignScape Ph: +61 2 9361 4233 Fx: +61 2 9361 4633
В списке pgsql-general по дате отправления: