* Albe Laurenz: > The original question asked was "how can I tell an error that is caused > by incomplete isolation from another error?" > > If you have a code segment like > SELECT COUNT(id) INTO i2 FROM a WHERE id = i; > IF i2 = 0 THEN > INSERT INTO a (id) VALUES (i); > END IF; > > Then you can be certain that any "unique_violation" thrown here must > be a serialization problem (if the only unique contraint is on "id"). I want to put this into a library, so I'd like something foolproof. Right now, user code sets a flag which basically says that the wrapper should retry the transaction a few times if a unique_violation is detected, but I'd like to get rid of that because it's one thing less the programmer needs to worry about. -- Florian Weimer <fweimer@xxxxxx> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99 -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
