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* BUG #18883: Epoch issue
@ 2025-04-08 12:00 PG Bug reporting form <noreply@postgresql.org>
2025-04-08 12:29 ` Re: BUG #18883: Epoch issue David G. Johnston <david.g.johnston@gmail.com>
0 siblings, 1 reply; 2+ messages in thread
From: PG Bug reporting form @ 2025-04-08 12:00 UTC (permalink / raw)
To: pgsql-bugs@lists.postgresql.org; +Cc: ravi105173@gmail.com
The following bug has been logged on the website:
Bug reference: 18883
Logged by: RAVI KANT BHUSHAN
Email address: ravi105173@gmail.com
PostgreSQL version: 16.1
Operating system: Windows 10
Description:
Number of days calculation using EPOCH is not providing right answer:
Query: SELECT (EXTRACT(EPOCH FROM ('2025-04-08 11:25:01'::timestamp -
'2025-03-13 15:33:30'::timestamp)) / 86400)::INT
==> output is 26, but right answer is 25 days
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: BUG #18883: Epoch issue
2025-04-08 12:00 BUG #18883: Epoch issue PG Bug reporting form <noreply@postgresql.org>
@ 2025-04-08 12:29 ` David G. Johnston <david.g.johnston@gmail.com>
0 siblings, 0 replies; 2+ messages in thread
From: David G. Johnston @ 2025-04-08 12:29 UTC (permalink / raw)
To: ravi105173@gmail.com <ravi105173@gmail.com>; pgsql-bugs@lists.postgresql.org <pgsql-bugs@lists.postgresql.org>
On Tuesday, April 8, 2025, PG Bug reporting form <noreply@postgresql.org>
wrote:
> The following bug has been logged on the website:
>
> Bug reference: 18883
> Logged by: RAVI KANT BHUSHAN
> Email address: ravi105173@gmail.com
> PostgreSQL version: 16.1
> Operating system: Windows 10
> Description:
>
> Number of days calculation using EPOCH is not providing right answer:
>
> Query: SELECT (EXTRACT(EPOCH FROM ('2025-04-08 11:25:01'::timestamp -
> '2025-03-13 15:33:30'::timestamp)) / 86400)::INT
> ==> output is 26, but right answer is 25 days
>
>
select 1.75::int; — yields 2
We don’t document the precise rules for what casting does but rounding
seems reasonable. Use the floor function to get your expected answer.
David J.
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