Horton

Re: First draft of PG 17 release notes

jian he <jian.universality@gmail.com>

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From: jian he <jian.universality@gmail.com>
To: Bruce Momjian <bruce@momjian.us>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2024-05-17T13:22:59Z
Lists: pgsql-hackers

Commits

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

  1. Revert support for ALTER TABLE ... MERGE/SPLIT PARTITION(S) commands

  2. When creating materialized views, use REFRESH to load data.

  3. Revert temporal primary keys and foreign keys

  4. Avoid needless large memcpys in libpq socket writing

  5. Enhance nbtree ScalarArrayOp execution.

  6. Introduce a non-recursive JSON parser

  7. Combine freezing and pruning steps in VACUUM

  8. Allow SIGINT to cancel psql database reconnections.

  9. Provide API for streaming relation data.

  10. Add hash support functions and hash opclass for contrib/ltree.

  11. Pull up ANY-SUBLINK with the necessary lateral support.

  12. Read WAL directly from WAL buffers.

  13. Introduce the dynamic shared memory registry.

  14. Add macros for looping through a List without a ListCell.

  15. Support +/- infinity in the interval data type.

  16. Extend ALTER OPERATOR to allow setting more optimization attributes.

  17. Consider cheap startup paths in add_paths_to_append_rel

On Thu, May 9, 2024 at 12:04 PM Bruce Momjian <bruce@momjian.us> wrote:
>
> I have committed the first draft of the PG 17 release notes;  you can
> see the results here:
>
>         https://momjian.us/pgsql_docs/release-17.html
>
> It will be improved until the final release.  The item count is 188,
> which is similar to recent releases:
>

This thread mentioned performance.
actually this[1] refactored some interval aggregation related functions,
which will make these two aggregate function: avg(interval), sum(interval)
run faster, especially avg(interval).
see [2].
well, I guess, this is a kind of niche performance improvement to be
mentioned separately.


these 3 items need to be removed, because of
https://git.postgresql.org/cgit/postgresql.git/commit/?id=8aee330af55d8a759b2b73f5a771d9d34a7b887f

>> Add stratnum GiST support function (Paul A. Jungwirth)

>> Allow foreign keys to reference WITHOUT OVERLAPS primary keys (Paul A. Jungwirth)
>> The keyword PERIOD is used for this purpose.

>> Allow PRIMARY KEY and UNIQUE constraints to use WITHOUT OVERLAPS for non-overlapping exclusion constraints (Paul A. Jungwirth)


[1] https://git.postgresql.org/cgit/postgresql.git/commit/?id=519fc1bd9e9d7b408903e44f55f83f6db30742b7
[2] https://www.postgresql.org/message-id/CAEZATCUJ0xjyQUL7SHKxJ5a%2BDm5pjoq-WO3NtkDLi6c76rh58w%40mail.gmail.com