You should do a separate query and have the database calculate the sum for
you (rather than loading all the records from the database and doing the
calculation in Python).
Anthony
On Tuesday, July 24, 2018 at 3:08:12 PM UTC-4, sandeep patel wrote:
>
> Hello,
> I have a grid that is worked as I expected. now I want to sum all the
> values that have in "number_of_bags" Field.
> So that I have used grid.rows (*sum([int(grid.rows[i].number_of_bags) for
> i in range(len(grid.rows))])*) but this gives me sum of first 10 records
> but i want sum of all the values which is in my grid.
> How can I do that in an efficient way?
>
>
> *#Model db.py*
>
> db.define_table('whr',
> Field('id_inword'),
> Field('whr_number'),
>
> Field("customer_name",requires=IS_NOT_EMPTY(),label="Account Holder's
> Name"),
> Field("whr_holder_name",label="WHR Holder's Name"),
> Field("father_name", label="Father Name"),
> Field("phone_number",label="Phone Number"),
> Field("number_of_bags",label="Number of bags"),
> auth.signature)
>
> Best
>
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