Re: Numeric numbers

2017-09-02 18:10 GMT+02:00 Melvin Davidson <melvin6925(at)gmail(dot)com>:

>
> On Sat, Sep 2, 2017 at 11:54 AM, Francisco Olarte <folarte(at)peoplecall(dot)com>
> wrote:
>
>> On Sat, Sep 2, 2017 at 4:16 PM, Олег Самойлов <olleg(at)mipt(dot)ru> wrote:
>> > Hi all. I have silly question. Look at "numeric" type. According to
>> > docs it must be "up to 131072 digits before the decimal point; up to
>> > 16383 digits after the decimal point". Well, lets see.
>> >
>> > => select 1::numeric/3;
>> > ?column?
>> > ------------------------
>> > 0.33333333333333333333
>>
>> => select 1::numeric(100,90)/3;
>> ?column?
>> ------------------------------------------------------------
>> ----------------------------------
>> 0.333333333333333333333333333333333333333333333333333333333
>> 333333333333333333333333333333333
>> (1 row)
>>
>> It's probably doing 1(integer) => double precioson => numeric(20) or
>> something similar if you do not specify.
>>
>> Francisco Olarte.
>>
>>
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>
>
>
> *Franciso,*
> *Per the docs, is is not "must be', it is "up to 131072 digits before the
> decimal point; up to 16383 digits after the decimal point".*
>
> *https://www.postgresql.org/docs/9.6/static/datatype-numeric.html#DATATYPE-NUMERIC-TABLE
> <https://www.postgresql.org/docs/9.6/static/datatype-numeric.html#DATATYPE-NUMERIC-TABLE>*
>
> *YOU have specified a precision of numeric(100,90), which means 90
> decimals and that is exactly what you got!*
>
> *The result is correct, so what is your question?*
>
> --
> *Melvin Davidson*
> I reserve the right to fantasize. Whether or not you
> wish to share my fantasy is entirely up to you.
>

The original snippet reads:

select 1::numeric/3;

And I think Francisco is asking why only 20 digits.

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Vincenzo Romano - NotOrAnd.IT
Information Technologies
--
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