Re: timestamps, formatting, and internals

On 2012-05-29, David Salisbury <salisbury(at)globe(dot)gov> wrote:
>
>
> On 5/27/12 12:25 AM, Jasen Betts wrote:
>> The query: "show integer_datetimes;" should return 'on' which means
>> timestamps are microsecond precision if it returns 'off' your database
>> was built with floating point timstamps and equality tests will be
>> unreliable,
>
> I find that rather interesting. I was told that I was losing microseconds
> when I extracted an epoch from the difference between two timestamps and casted
> that value to an integer. So if I have integer timestamps ( your case above )
> I get microseconds, but integer epochs is without microseconds?

yeah, the microseconds appear as fractions of seconds, so in the
conversion to integer epoch they get rounded off.

>
> Thanks,
>
> -ds
>

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