Re: last entry per person
От | Andreas Kretschmer |
---|---|
Тема | Re: last entry per person |
Дата | |
Msg-id | 20120203084003.GA14758@tux обсуждение исходный текст |
Ответ на | last entry per person (garry <garry@scholarpack.com>) |
Список | pgsql-general |
garry <garry@scholarpack.com> wrote: > I have a table which holds a user name and their results in exams. There > can be multiple entries per user. I am trying to return the last entry > for each user. I can get the last entry in the table using the order > by/limit method but how would this be applied per user. My table > definition is like the following: > >> gradeid serial primary key, >> user text, >> grade char(1), >> entered timestamp, > Any help would be appreciated. > Regards > Garry What about "select user, max(entered) from table group by user" ? Btw.: user is a reserved word, don't use it as column-name. Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) "If I was god, I would recompile penguin with --enable-fly." (unknown) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°
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