Re: UPDATE & LIMIT together?
| От | Bruce Momjian |
|---|---|
| Тема | Re: UPDATE & LIMIT together? |
| Дата | |
| Msg-id | 200209031839.g83Id9o07705@candle.pha.pa.us обсуждение исходный текст |
| Ответ на | Re: UPDATE & LIMIT together? (tp <tp@emaze.net>) |
| Список | pgsql-sql |
tp wrote: > Hmm,, > > thanks so far, it helped. > > The query is horrible slow on full tables (>100.000 rows). > Is there any other solution? I just want to have the 'next 10 entries' > WHERE state=10 and update state=20. > (so that on the next request i or another process only gets the > new entires in queue). > > > My query now looks like: > UPDATE queue SET state=20 WHERE (id) IN (SELECT id FROM queue LIMIT 10) Without an ORDER BY, I am not sure what that LIMIT is returning. I don't know of a faster way. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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