Re: last 25 records from a dataset
| От | Jason Friedman |
|---|---|
| Тема | Re: last 25 records from a dataset |
| Дата | |
| Msg-id | 20020707025741.K1034@abigail обсуждение исходный текст |
| Ответ на | last 25 records from a dataset (Brian Scandale <Brrrian@Excite.com>) |
| Список | pgsql-novice |
I'm not a guru, but I have used a similar query successfully. On 2002.07.06 23:48 Brian Scandale wrote: > I am looking for the correct way to retrieve the last 25 records from > a dataset without having to first retrieve the entire dataset to pull > out the last 25. > > The potential dataset can be very large... 10,000 records that match > the query... yet I only can use the most recent 25. > > my first idea is: > > SELECT * > FROM table > WHERE thisField=thatValue etc... > ORDER BY table_id DESC > LIMIT 25 > > But I'm not confident in this and looking for a yeah or nay from a > guru or two or three. > > Thanks, > Brian > > > > > ---------------------------(end of > broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster > >
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