Re: problem query ...

Поиск
Список
Период
Сортировка
От Frank Bax
Тема Re: problem query ...
Дата
Msg-id 3.0.6.32.20020131123540.01b78ba0@pop6.sympatico.ca
обсуждение исходный текст
Ответ на problem query ...  (John Taylor <postgres@jtresponse.co.uk>)
Ответы Re: problem query ...  (John Taylor <postgres@jtresponse.co.uk>)
Список pgsql-novice
select mytable.* from mytable, (select id,max(update) as update from
mytable group by id) maxes where mytable.id = maxes.id and mytable.update =
maxes.update;

At 04:24 PM 1/31/02 +0000, John Taylor wrote:
>
>Hi,
>
>I hope someone can help with this query, which is causing me great problems.
>
>I have a table:
>create table mytable ( id varchar(10), name varchar(10), desc varchar(10),
update integer);
>
>I want to return 1 row for each id, that contains the maximum update value
for that id, and
>the values for name and desc.
>
>I've tried everything I can think of, but no luck :-(
>I'm sure there is some simple trick that I'm missing.
>
>Can someone please put me out of my misery !
>
>Thanks
>JohnT
>
>---------------------------(end of broadcast)---------------------------
>TIP 2: you can get off all lists at once with the unregister command
>    (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
>

В списке pgsql-novice по дате отправления:

Предыдущее
От: Tom Lane
Дата:
Сообщение: Re: problem query ...
Следующее
От: John Taylor
Дата:
Сообщение: Re: problem query ...