Horton
Menu

Re: First draft of PG 19 release notes

jian he <jian.universality@gmail.com>

View thread
From: jian he <jian.universality@gmail.com>
To: Bruce Momjian <bruce@momjian.us>
Cc: PostgreSQL-development <pgsql-hackers@lists.postgresql.org>
Date: 2026-04-15T14:59:13Z
Lists: pgsql-hackers 
On Wed, Apr 15, 2026 at 9:19 AM Bruce Momjian <bruce@momjian.us> wrote:
>
> I have completed the first draft of the PG 19 release notes:
>
>         https://www.postgresql.org/docs/devel/release-19.html
>

https://git.postgresql.org/cgit/postgresql.git/commit/?id=ecd9288624a1582a732cf86ac5a01475a1ce7815
https://git.postgresql.org/cgit/postgresql.git/commit/?id=4edd6036d69ce42ac1af236f659f20daed65c8d4
Do you think these two are worth adding to the release notes?

"""
Allow COPY TO to output partitioned tables (Jian He, Ajin Cherian) § §
Previously COPY (SELECT ...) has to be used to output partitioned tables.
"""
The second commit uses this feature, so i guess the commit message
needs a slight change.

"""
Improve timing performance measurements (Lukas Fittl, Andres Freund,
David Geier, Lukas Fittl, David Geier) § §
This benefits EXPLAIN (ANALYZE, TIMING) and pg_test_timing, and is
controlled via server variable timing_clock_source.
"""
Duplicated name entry.

"""
Allow IS [NOT] DISTINCT FROM NULL to be converted to IS [NOT] NULL for
proven null arguments (Richard Guo) §
The latter form is more easily optimized.
"""
Two optional ``[NOT]`` introduce ambiguity.

"""
Add support for INSERT ... RETURNING ... ON CONFLICT DO SELECT
(Andreas Karlsson, Marko Tiikkaja, Viktor Holmberg) §
This allows conflicting rows to be returns, and optionally locked with
FOR UPDATE/SHARE.
"""
I think it's:
INSERT... ON CONFLICT DO SELECT...RETURNING



--
jian
https://www.enterprisedb.com/

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. doc PG 19 relnotes: remove VALIDATE CONSTRAINT lock item

  2. Fix ALTER DOMAIN VALIDATE CONSTRAINT locking

  3. Revert "Enable fast default for domains with non-volatile constraints"

  4. doc PG 19 relnotes: improve awkward or confusing wording

  5. doc PG 19 relnotes: more fixes

  6. doc PG 19 relnotes: various corrections

  7. doc PG 19 relnotes: adjust item to mention pg_replication_slots

  8. doc PG 19 relnotes: remove "Add fake LSN support to hash index"

  9. doc PG 19 relnotes: add two optimizer hooks

  10. doc PG 19 relnotes: remove "Optionally" for CPU optimizations

  11. doc PG 19 relnotes: adjustments/removal of items

  12. doc PG 19 relnotes: add UTF-8 case folding performance item

  13. doc PG 19 relnotes: correct two items

  14. doc PG 19 relnotes: add missing commits and details

  15. doc PG 19 relnotes: fix typo, "date" -> "data"

  16. doc PG 19 relnotes: add author and move items

  17. doc PG 19 relnotes: update author

  18. doc PG 19 relnotes: add free space map all-visible item

  19. doc PG 19 relnotes: remove "Lakshmi N" as author of checksums

  20. doc PG 19 relnotes: fix "now targets"

  21. doc PG 19 relnotes: adjust ShmemRequestStruct item

  22. Improve various new-to-v19 appendStringInfo calls

  23. doc: Fix data_checksums data type

  24. Fix WITHOUT OVERLAPS' interaction with domains.

  25. Online enabling and disabling of data checksums

  26. Doc: split functions-posix-regexp section into multiple subsections.

  27. make immutability tests in to_json and to_jsonb complete

  28. Optimize tuple deformation

  29. pgstattuple: Optimize pgstattuple_approx() with streaming read

  30. Use fake LSNs to improve nbtree dropPin behavior.

  31. Use streaming read for VACUUM cleanup of GIN

  32. Clean up ICU includes.

  33. ICU: use UTF8-optimized case conversion API

  34. Add the MODE option to the WAIT FOR LSN command

  35. Speedup tuple deformation with additional function inlining