On Wed, Apr 8, 2015 at 12:18 PM, Luis Zárate <luisz...@gmail.com> wrote: > > if you know that only have two emails for user and you check his email a lot > then the cost of join in time and machine resources increase innecessarily
"normalize until it hurts, denormalize until it runs" here the OP is way, way, behind of the very first normalizations. any consideration of an hypothetical "cost of join" would be much later, if any. -- Javier -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAFkDaoQdCZQAiyo4N5781f8eTANOSOOJUwVQs2yTjj5GFFiCng%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
