Re: Collation version tracking for macOS

On Wed, 2022-11-30 at 07:18 +1300, Thomas Munro wrote:
> On Wed, Nov 30, 2022 at 7:03 AM Jeremy Schneider
> <schneider(at)ardentperf(dot)com> wrote:
> > It seems to me that the collator_version field is not a good
> > version
> > identifier to use.
> >
> > Just taking a quick glance at the ICU home page right now, it shows
> > that
> > all of the last 5 versions of ICU have included "additions and
> > corrections" to locale data itself, including 68 to 69 where the
> > collator version did not change.
> >
> > Is it possible that this "collator_version" only reflects the code
> > that
> > processes collation data to do comparisons/sorts, but it does not
> > reflect updates to the locale data itself?
>
> I think it also includes the CLDR version for *some* locales.  From a
> quick look, that includes 'ar', 'ru', 'tr', 'zh'.  Jeff, would you
> mind sharing the same table for one of those?  Perhaps 'en' really
> does depend only on the UCA?

=# select * from pg_icu_collation_versions('ar') order by icu_version;
icu_version | uca_version | collator_version
-------------+-------------+------------------
50.2 | 6.2 | 58.0.0.50
51.3 | 6.2 | 58.0.0.50
52.2 | 6.2 | 58.0.0.50
53.2 | 6.3 | 137.51.25
54.2 | 7.0 | 137.56.26
55.2 | 7.0 | 153.56.27.1
56.2 | 8.0 | 153.64.28
57.2 | 8.0 | 153.64.29
58.3 | 9.0 | 153.72.30.3
59.2 | 9.0 | 153.72.31.1
60.3 | 10.0 | 153.80.32.1
61.2 | 10.0 | 153.80.33
62.2 | 11.0 | 153.88.33.8
63.2 | 11.0 | 153.88.34
64.2 | 12.1 | 153.97.35.8
65.1 | 12.1 | 153.97.36
66.1 | 13.0 | 153.14.36.8
67.1 | 13.0 | 153.14.37
68.2 | 13.0 | 153.14.38.8
69.1 | 13.0 | 153.14.39
70.1 | 14.0 | 153.112.40
(21 rows)

=# select * from pg_icu_collation_versions('zh') order by icu_version;
icu_version | uca_version | collator_version
-------------+-------------+------------------
50.2 | 6.2 | 58.0.0.50
51.3 | 6.2 | 58.0.0.50
52.2 | 6.2 | 58.0.0.50
53.2 | 6.3 | 137.51.25
54.2 | 7.0 | 137.56.26
55.2 | 7.0 | 153.56.27.1
56.2 | 8.0 | 153.64.28
57.2 | 8.0 | 153.64.29
58.3 | 9.0 | 153.72.30.3
59.2 | 9.0 | 153.72.31.1
60.3 | 10.0 | 153.80.32.1
61.2 | 10.0 | 153.80.33
62.2 | 11.0 | 153.88.33.8
63.2 | 11.0 | 153.88.34
64.2 | 12.1 | 153.97.35.8
65.1 | 12.1 | 153.97.36
66.1 | 13.0 | 153.14.36.8
67.1 | 13.0 | 153.14.37
68.2 | 13.0 | 153.14.38.8
69.1 | 13.0 | 153.14.39
70.1 | 14.0 | 153.112.40
(21 rows)

--
Jeff Davis
PostgreSQL Contributor Team - AWS