Re: 8.3: timestamp subtraction

On May 23, 2009, at 9:13 AM, Daniel Verite wrote:
>> I don't know why this query returns false:
>> SELECT '20040506 070809.010000'::timestamp(6) - '20010203
>> 040506.007000'::timestamp(6) = '1188 day 3 hour 3 minute 3 second 3
>> millisecond'::interval;
>> If I just subtract the two timestamps, its result is the interval I
>> specified.
>> What may cause this?
>
> It works for me:
>
> test=> SELECT '20040506 070809.010000'::timestamp(6) -
> '20010203 040506.007000'::timestamp(6)=
> '1188 day 3 hour 3 minute 3 second 3 millisecond'::interval;
> ?column? ----------
> t
> (1 row)

Could this be due to the OP's build of PG using floating point
timestamps?