On Fri, Jan 18, 2013 at 10:58 AM, Ram Rachum <r...@rachum.com> wrote:
> I suggest copying your explanation into the documentation.

it's already there:

" This means that calling QuerySet.exists() is faster than
bool(some_query_set), but not by a large degree. If some_query_set has
not yet been evaluated, but you know that it will be at some point,
then using some_query_set.exists() will do more overall work (one
query for the existence check plus an extra one to later retrieve the
results) than simply using bool(some_query_set), which retrieves the
results and then checks if any were returned."

[https://docs.djangoproject.com/en/1.4/ref/models/querysets/#django.db.models.query.QuerySet.exists]


--
Javier

-- 
You received this message because you are subscribed to the Google Groups 
"Django developers" group.
To post to this group, send email to django-developers@googlegroups.com.
To unsubscribe from this group, send email to 
django-developers+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/django-developers?hl=en.

Reply via email to