timestamp out of range while casting return value to function's return type

Thiemo Kellner <thiemo@gelassene-pferde.biz> writes:

I created a function that ought to return a timestamptz (another
likewise timestamp) but calling it, I get mentionied error. What do I
miss?

Whether that:

return '294277-01-01 00:59:59.999999'::timestamptz;

is in range or not depends on your timezone setting. It would
be considered in-range in UTC+1 or further east (so that the date
wraps back to 294276AD); in or west of Greenwich, not so much.

I tried to return a timestamp of the year 2000 to no avail.

Hardly ...

regards, tom lane

Hi Tom

Thanks for replying so fast. You are absolutely right.

I changed the code file but failed to install it. :-( I am sorry for
not checking the obvious.

Kind regards

Thiemo

Quoting Tom Lane <tgl@sss.pgh.pa.us>:

Thiemo Kellner <thiemo@gelassene-pferde.biz> writes:

I created a function that ought to return a timestamptz (another
likewise timestamp) but calling it, I get mentionied error. What do I
miss?

Whether that:

return '294277-01-01 00:59:59.999999'::timestamptz;

is in range or not depends on your timezone setting. It would
be considered in-range in UTC+1 or further east (so that the date
wraps back to 294276AD); in or west of Greenwich, not so much.

I tried to return a timestamp of the year 2000 to no avail.

Hardly ...

regards, tom lane

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On Sat, Aug 24, 2019 at 12:57:07AM +0000, Thiemo Kellner wrote:

Call: select utils.get_max_timestamptz();
--

Function
--
create or replace function GET_MAX_TIMESTAMPTZ()
returns timestamptz
language plpgsql
immutable
-- Include the hosting schema into search_path so that dblink
-- can find the pglogger objects. There is no need to access
-- objects in other schematas not covered with public.
as
$body$
begin
-- highest timestamps on 64bit lubuntu vanilla PostgreSQL 11.3
return '294277-01-01 00:59:59.999999'::timestamptz;
end;
$body$;

Also, but that's a nitpick perhaps not relevant to your use case:

This

$> psql -d gnumed_v22 -U <redacted>
psql (11.5 (Debian 11.5-1+deb10u1))

gnumed_v22=> select 'infinity'::timestamptz;
-[ RECORD 1 ]---------
timestamptz | infinity

gnumed_v22=>

is the highest timestamp.

(You *can* count the horses in *your* corral but there's
always more of them elsewhere ;-)

Just so you are aware.

Best,
Karsten
--
GPG 40BE 5B0E C98E 1713 AFA6 5BC0 3BEA AC80 7D4F C89B

Hi Karsten

Thanks for the infinitly good hint. I remembered the infinity
blurredly somewhen this morning, looked it up in the docs and already
dumped my functions in favour of the infinity solution. :-) Great,
that PostgreSQL has the infinity concept! Thanks

Kind regards

Thiemo

Quoting Karsten Hilbert <Karsten.Hilbert@gmx.net>:

On Sat, Aug 24, 2019 at 12:57:07AM +0000, Thiemo Kellner wrote:

Call: select utils.get_max_timestamptz();
--

Function
--
create or replace function GET_MAX_TIMESTAMPTZ()
returns timestamptz
language plpgsql
immutable
-- Include the hosting schema into search_path so that dblink
-- can find the pglogger objects. There is no need to access
-- objects in other schematas not covered with public.
as
$body$
begin
-- highest timestamps on 64bit lubuntu vanilla PostgreSQL 11.3
return '294277-01-01 00:59:59.999999'::timestamptz;
end;
$body$;

Also, but that's a nitpick perhaps not relevant to your use case:

This

$> psql -d gnumed_v22 -U <redacted>
psql (11.5 (Debian 11.5-1+deb10u1))

gnumed_v22=> select 'infinity'::timestamptz;
-[ RECORD 1 ]---------
timestamptz | infinity

gnumed_v22=>

is the highest timestamp.

(You *can* count the horses in *your* corral but there's
always more of them elsewhere ;-)

Just so you are aware.

Best,
Karsten
--
GPG 40BE 5B0E C98E 1713 AFA6 5BC0 3BEA AC80 7D4F C89B

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