problem with money datatype based calculations in python

[anusha k]

Do calculations in postgresql and then call that calculated value from the
python.So no need to calculate in python at all


Njoy the share of Freedom,
Anusha Kadambala
On Sat, May 2, 2009 at 1:15 PM, Krishnakant <krmane at gmail.com> wrote:

> hello all,
> I am using postgresql as a database server for my db application.
>
> The database is related to accounts and point of sales and many
> calculations involve money datatype.
>
> The application logic is totally done in python.  Now the problem is
> that there is a situation where we calculate tax on % of the total
> amount on the invoice.  The  percentage is in terms of float but the
> eventual amount has to be in a money datatype.
>
> The product cost comes in money datatype from postgresql and the tax %
> comes in float.  So I would like to know if python supports some thing
> similar to money datatype so that I can cast my total amount (in money )
> divided by tax% (in float ) so money divided by float should be the
> result and that result should be in money datatype.
> For example a product x has the cost Rs. 100 which is stored in the
> tabel as money type.  and in the tax table for that product the VAT is
> 5% and this 5% is stored in float datatype.  So after using both these
> values the resulting total 105Rs. should be in money type and not float.
> I awaite some reply,
> Thanks in advice.
> happy hacking.
> Krishnakant.
>
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>
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