For some reason, __exact and __isnull are described in documentation [1],
while =None is not. So which of them are historical?

[1]
http://docs.djangoproject.com/en/dev/topics/db/queries/#topics-db-queries

2009/10/20 Russell Keith-Magee <freakboy3...@gmail.com>

>
> These three queries are all exactly the same, and if you look at the
> underlying SQL that is generated by these queries, you should find
> that they compile to the same result.
>
> The __exact and __isnull versions both exist for historical reasons.
>
> Yours,
> Russ Magee %-)
>
> >
>


-- 
regards,
Mihail

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