ack ! totally missed that, sorry.
On Jul 31, 2013, at 10:56 AM, Etienne Rouxel <rouxel.etie...@gmail.com> wrote: > Hello Michael > > Thank you very much for your quick answer. > > I did provide the file test-data.sql that generates data. Didn't you see it > or maybe would you like something different next time? > > Thank you > > > Le mercredi 31 juillet 2013 10:09:54 UTC+2, Etienne Rouxel a écrit : > Hello > > Better than a long speech, here are two files (eagerloading1.py, > eagerloading2.py) which, I though, were supposed to do the same thing. > Indeed, the difference is that in the first file, the polymorphic_identity is > hard coded and in the second file, it is set dynamically afterward (like > explained in > http://stackoverflow.com/questions/15112340/how-can-i-set-polymorphic-identity-after-a-class-is-defined). > > The result is that both files trigger the query to get all the taxa. However, > the second file also triggers a new query each time there is an access to the > referenced_taxon, which is supposed to be loaded already and of course, that > query in a loop ruins the performances. > > So my question is, how can set the polymorphic_identity dynamically and still > avoid the new queries in the loop? > > I also provided some the SLQ commands to quickly reproduce the results > (test-data.sql). > Tests have been performed with SQLAlchemy==0.8.2 > > -- > 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/groups/opt_out. > >
signature.asc
Description: Message signed with OpenPGP using GPGMail
