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Re: Money in numeric field

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El día 20 de abril de 2012 05:51, Albe Laurenz
<laurenz.albe@xxxxxxxxxx> escribió:
> Martín Marqués wrote:
>> I have a question involving money data stored in a numeric(9,2) field,
>> and posible errors with there manipulation.
>> in short, the table has these columns:
>> store: int
>> amount: int2
>> cost: numeric(9,2)
>> What I need to find is the total amount of money spent in a particular
>> store, so I do something like the second query:
>> SELECT count(*) from material where store = 9;
>>  count
>> -------
>>    360
>> (1 fila)
>> SELECT sum(cost*amount) from material where store = 9;
>>    sum
>> ----------
>>  48244.35
>> (1 fila)
>> Is it posible to have errors after multipling the numeric value by and
>> int and then adding them all with the SUM() function?
> Not really.
> "numeric" represents numbers exactly up to 131072 digits before
> the decimal point and up to 16383 digits after the decimal point.

Yes, I read that it's stored in a PACKED DECIMAL or BCD, but I was
worried abouit the SUM() function.

For what I read so far, I guess I won't have any problem, but just
wanted to be sure.

Martín Marqués
select 'martin.marques' || '@' || ''
DBA, Programador, Administrador

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