Re: Questions on RI spec (poss. bugs)
От | Hannu Krosing |
---|---|
Тема | Re: Questions on RI spec (poss. bugs) |
Дата | |
Msg-id | 3A1BF146.7552AEE6@tm.ee обсуждение исходный текст |
Ответ на | Re: Questions on RI spec (poss. bugs) (Peter Eisentraut <peter_e@gmx.net>) |
Список | pgsql-hackers |
Peter Eisentraut wrote: > > Jan Wieck writes: > > > Stephan Szabo wrote: > > > > > > There's a message on -general about a possible > > > problem in the deferred RI constraints. He was doing a > > > sequence like: > > > begin > > > delete > > > insert > > > end > > > and having it fail even though the deleted key was back in > > > place at the end. > > > > Isn't that (delete and reinsert the same PK) what the > > standard means with "triggered data change violation"? > > Triggered data change violations can only occur if the same attribute is > changed twice during the same *statement*, not transaction. > Do we also get "Triggered data change violations" when we delete and then insert on the FK side in a single transaction ? I just had to remove a FK constraint because I could not figure ot where the violation was coming from ;( ----------------- Hannu
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