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Re: First draft of PG 19 release notes

Bruce Momjian <bruce@momjian.us>

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From: Bruce Momjian <bruce@momjian.us>
To: Chao Li <li.evan.chao@gmail.com>
Cc: PostgreSQL-development <pgsql-hackers@lists.postgresql.org>
Date: 2026-06-16T18:14:35Z
Lists: pgsql-hackers 
On Tue, Jun  9, 2026 at 02:59:17PM +0800, Chao Li wrote:
> This feature has been reverted by a0354e29c41a9fb7491b3c7c23f079b1923c045a.
> 
> ```
> <!--
> Author: Andrew Dunstan <andrew@dunslane.net>
> 2026-03-12 [a0b6ef29a] Enable fast default for domains with non-volatile constr
> -->
> 
> <listitem>
> <para>
> Allow the <link linkend="sql-altertable">addition of columns</link> based on domains containing constraints to usually avoid a table rewrite (Jian He)
> <ulink url="&commit_baseurl;a0b6ef29a">&sect;</ulink>
> </para>
> 
> <para>
> Previously this always required a table rewrite.
> </para>
> </listitem>
> ```
> 
> So this item can be removed from the release note.

Thanks.  Reading the revert commit message, I am not sure I would have
associated it with this release note item's visible text.  Thanks.  I
updated the release notes to current.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  Do not let urgent matters crowd out time for investment in the future.

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