Re: row numbering
От | Karsten Hilbert |
---|---|
Тема | Re: row numbering |
Дата | |
Msg-id | 20050228174643.E583@hermes.hilbert.loc обсуждение исходный текст |
Ответ на | row numbering (josue <josue@lamundial.hn>) |
Ответы |
Re: row numbering
Re: row numbering |
Список | pgsql-general |
> > > > is there a way return a column with the row number automatically > > > > generated according the way the rows were processed by the query. > > > > > > No, but you can easily keep a counter in the client. > > > > How, then, do I do it if I "need" the "row number" in a view ? > > Keep the counter in the client as you process or display the result > rows. Well, but I'd like to use those "row numbers" in a comparison right inside the view definition ... Eg.: There are 5 vaccinations in a given vaccination schedule. Patient had 3 shots. I want the view to show me that shot 4 and 5 are missing without having to enter the cardinality of the vaccination in the original data. Karsten -- GPG key ID E4071346 @ wwwkeys.pgp.net E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346
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