Re: Intervals and ISO 8601 duration
On Fri, Jan 13, 2023 at 2:41 PM Adrian Klaver <adrian.klaver@aklaver.com> wrote:
> (I'm asking because of an issue that came up about intervals that were
> "equal but not identical.")
1) Can you provide an example?
Here's an example. Note that they come out formatted differently with to_char, but evaluate as equal. The explanation(1) was that they were Equal but not Identical. I was thinking getting the raw data about how they are stored would get at the identicality issue:
WITH inters AS (
SELECT
'1 day 2 hours'::interval AS i1,
'26 hours'::interval AS i2
)
SELECT
*,
to_char(i1,'HH24:MM:SS') AS i1_char,
to_char(i2,'HH24:MM:SS') AS i2_char,
i1=i2 AS "Equal?"
FROM inters;
i1 | i2 | i1_char | i2_char | Equal?
----------------+----------+----------+----------+--------
1 day 02:00:00 | 26:00:00 | 02:00:00 | 26:00:00 | t
Cheers,
Ken
Ken
>
> Cheers,
> Ken
>
>
--
Adrian Klaver
adrian.klaver@aklaver.com
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