Well only caveat here is that I am inserting a list of objects in one go using session.add_all()
On Wednesday, July 23, 2014 2:01:18 PM UTC-5, Michael Bayer wrote: > > use a savepoint: > > from sqlalchemy import exc > try: > with session.begin_nested(): > session.add(MyObject()) > session.flush() > except exc.IntegrityError: > pass > session.commit() > > > personally I prefer just to emit a SELECT first, which may be a per-row > SELECT or may be a prefetch of all the rows from the table in question. > > > > On Jul 23, 2014, at 2:15 PM, Milind Vaidya <kav...@gmail.com <javascript:>> > wrote: > > I have a script which updates DB periodically. There are some base table > which may undergo some change but very rarely. In such case if this script > tries to insert the already present value it will throw integrity error. > Is there any way of dealing with this other that first fetch the value > manually and then only insert if not present ? > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+...@googlegroups.com <javascript:>. > To post to this group, send email to sqlal...@googlegroups.com > <javascript:>. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. > > > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
