The number is stored in a dictionary called '_extra'. The top part of
what you are getting is the dictionary key. Do something like this to
get just the number...
row = db(...).select(db.some_table.amount.sum())[0]
answer = row.'_extra['SUM(some_table.amount) ']
See pg 169 of the book.
On Mar 10, 1:23 pm, minh <mdn0...@gmail.com> wrote:
> I couldn't find much documentation on sum() and I'm not sure how to
> use it.
>
> If I have something like
>
> define_table('some_table',
> Field('amount', 'integer')
> ...
>
> I try db(...).select(db.some_table.amount.sum())
>
> When I print it out, I get something like:
>
> SUM(some_table.amount)
> 300
>
> How do I get it to print just the number?
>
> Thanks.
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