On May 1, 12:28 pm, Liang Zhao <[email protected]> wrote:
> I'm not sure, but it seems both
>
> alerts = Alert.all().filter('expires >= ', datetime.datetime.now())
>
> and
>
> alerts = Alert.all().filter('expires >= ',
> datetime.datetime.now()).fetch(1000)
>
> should be the same, since according to documents, app engine only
> return the first 1000 records.
Fetching the records as a batch and then doing stuff with them is
faster than treating a db.Query object as an iterable.
On the other hand, fetch(1000) is fairly likely to get you a datastore
timeout, depending on your data.
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