Re: BUG #16939: Plural interval for negative singular

On Tue, Mar 23, 2021 at 12:03:36PM -0400, Bruce Momjian wrote:
> On Tue, Mar 23, 2021 at 05:21:30AM +0000, PG Bug reporting form wrote:
> > The following bug has been logged on the website:
> >
> > Bug reference: 16939
> > Logged by: Max Neverov
> > Email address: neverov(dot)max(at)gmail(dot)com
> > PostgreSQL version: 13.2
> > Operating system: alpine
> > Description:
> >
> > Execute the query:
> > postgres=# set intervalstyle='postgres';
> > SET
> > postgres=# select interval '-1 year -1 day';
> > interval
> > ------------------
> > -1 years -1 days
> > (1 row)
> >
> > Expected output:
> > -1 year -1 day
> >
> > The code
> > (https://github.com/postgres/postgres/blob/master/src/backend/utils/adt/datetime.c#L4193)
> > pluralizes a time unit if the value is not 1, should check both -1 and 1.
> >
>
> Wow, interesting. Seems there were a few places in the code that
> handled this properly, and several that didn't. The attached patch
> fixes these and updates the regression tests. I will apply this for PG
> 14 in the next few days. This is too likely to break something to
> backpatch. Thanks for the report.

Patch applied and will appear in PG 14. Thanks for the report.

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

If only the physical world exists, free will is an illusion.