Re: BUG #3959: Huge calculation error

Renaud Diez wrote:
> The following bug has been logged online:
>
> Bug reference: 3959
> Logged by: Renaud Diez
> Email address: rdiez(at)salesprize(dot)com
> PostgreSQL version: 8.2
> Operating system: Debian
> Description: Huge calculation error
> Details:
>
> the basic mathematical expression like the following one doesn't compute the
> correct result:
>
>> select 100*(1+(21/100));
>
> return a result of 100 instead of 121.

It does compute the correct result, because you're doing integer
calculations. 21/100 for integers is 0. To make it do float calc, you can do
select 100*(1+(21::float/100));

Or you can do
select 100*(1+(21.0/100));

which will force it to numeric.

//Magnus