Re: Getting the next sequence value safely
От | Dave Cramer |
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Тема | Re: Getting the next sequence value safely |
Дата | |
Msg-id | 1023513510.1644.788.camel@inspiron.cramers обсуждение исходный текст |
Ответ на | Getting the next sequence value safely (Jeremy Buchmann <jeremy@wellsgaming.com>) |
Список | pgsql-jdbc |
Jeremy, No just do a select nextval('sequencename') and then insert it with the result. Dave On Fri, 2002-06-07 at 17:24, Jeremy Buchmann wrote: > Hi, > > I have a situation where I want to insert a record into a table > which will give the record a unique id via a sequence. Is there > an easy and safe way to get this id number either right before > or right after the insertion? My best idea is to select last_value > from the sequence and then assume that the record will get > last_value + 1 when it is inserted (the insertion would happen > right after the select). Is this a safe assumption? > What happens if I wrap these operations in a transaction? Is > there a standard way of doing this? > > Thanks, > --Jeremy > > > ---------------------------(end of broadcast)--------------------------- > TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org) > >
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