Re: How many digits are printed with double precision?

OK, I finally found it. Thanks I will try to set the value to 1 or 2 for
the moment.

On 03/23/2011 10:35 PM, Frank Bax wrote:
>
> http://lmgtfy.com/?q=postgresql+documentation+extra_float_digits
>
>
> On 03/23/11 17:24, Mathieu Dubois wrote:
>> Hi Tom,
>>
>> Thanks for the very fast answer but what do you mean exactly by :
>>
>> "See extra_float_digits."
>>
>> I have found messages on the mailing list but it doesn't help (I don't
>> want to recompile everything). Is there an option in some configuration
>> file to set?
>>
>> Mathieu
>> On 03/23/2011 10:02 PM, Tom Lane wrote:
>>> Mathieu Dubois<mathieu(dot)dubois(at)limsi(dot)fr> writes:
>>>> I have a double precision column in my DB (it's the time at which an
>>>> image was taken expressed in second from UNIX epoch). When I query the
>>>> value (SELECT time...) I get only 5 digits after the dot (while I
>>>> /suppose/ there are 6 digits). I have the same result when using
>>>> pgadmin. The results looks like the rounding of the desired time
>>>> (which
>>>> I know by the filename).
>>> See extra_float_digits. Be aware that cranking that up produces digits
>>> that are not 100% trustworthy. If you are expecting exact results of
>>> more than 15 places, you likely shouldn't be using float arithmetic.
>>>
>>> regards, tom lane
>