Re: insert/update
От | Jeff Eckermann |
---|---|
Тема | Re: insert/update |
Дата | |
Msg-id | 20040527134843.82786.qmail@web20803.mail.yahoo.com обсуждение исходный текст |
Ответ на | Re: insert/update (Tom Allison <tallison@tacocat.net>) |
Список | pgsql-general |
--- Tom Allison <tallison@tacocat.net> wrote: > Jeff Eckermann wrote: > > --- Tom Allison <tallison@tacocat.net> wrote: > > > >>I seemed to remember being able to do this but I > >>can't find the docs. > >> > >>Can I run a sql query to insert new or update > >>existing rows in one query? > > So I have to watch out for transactions on this? > Essentially what I'm trying to do is one of the > following two: > > if exists update a field to field+1 on one record > if it doesn't exist, insert a row with field = 1 > I'm not sure what you are asking here that is not already covered. I suggest you spend some time reading the documentation on concurrency, and searching the archives for some of the lengthy past discussions on this topic. __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/
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