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Re: ICU for global collation

Julien Rouhaud <rjuju123@gmail.com>

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From: Julien Rouhaud <rjuju123@gmail.com>
To: Daniel Verite <daniel@manitou-mail.org>
Cc: Peter Eisentraut <peter.eisentraut@enterprisedb.com>, Pgsql-Hackers <pgsql-hackers@postgresql.org>
Date: 2022-01-11T11:47:00Z
Lists: pgsql-hackers 
On Tue, Jan 11, 2022 at 12:36:46PM +0100, Daniel Verite wrote:
> 
> If CREATE DATABASE referred to a collation in the template db,
> either that collation already exists, or the user would have to add it
> to the template db with CREATE COLLATION.
> initdb already populates the template databases with a full set of
> ICU collations through pg_import_system_collations().
> I don't quite see what change you're seeing that would be needed in
> initdb.

Yes, there are already the system collation imported.  But you still need to
make sure that that collation does exist in the template database, and it's
still impossible to connect to that database to check when processing the
CREATE DATABASE.  Also, if the wanted collation wasn't imported by
pg_import_system_collations() and isn't the server's default collation, then
the user would have to allow connection on the template0 database and create
the wanted collation there.  It doesn't seem like something that should be
recommended for a reasonably standard use case.

Commits

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

  1. Add CHECK_FOR_INTERRUPTS while restoring changes during decoding.

  2. Improve ICU option handling in CREATE DATABASE

  3. Don't allow creation of database with ICU locale with unsupported encoding

  4. Make locale option behavior more consistent

  5. pg_dump: Dump colliculocale

  6. Remove further unwanted linker flags from perl_embed_ldflags

  7. Doc: document possible need to raise kernel's somaxconn limit.

  8. Reduce warnings with -Wshadow=compatible-local builds

  9. Remove redundant spaces in _outA_Expr() output

  10. Fix outdated --help message for postgres -f

  11. pg_upgrade: Fix version comparison for global ICU support

  12. Silence -Wmaybe-uninitialized compiler warning in dbcommands.c.

  13. Add option to use ICU as global locale provider

  14. DefineCollation() code cleanup

  15. Change collate and ctype fields to type text

  16. Call pg_newlocale_from_collation() also with default collation

  17. Use libc version as a collation version on glibc systems.

  18. Silence -Wmaybe-uninitialized compiler warnings in dbcommands.c.

  19. Make LC_COLLATE and LC_CTYPE database-level settings. Collation and