Re: First draft of PG 19 release notes - Mailing list pgsql-hackers

From Chao Li
Subject Re: First draft of PG 19 release notes
Date
Msg-id 402C0CBE-B5C3-41BD-9D6D-E739B9E1E390@gmail.com
Whole thread
In response to Re: First draft of PG 19 release notes  (Bruce Momjian <bruce@momjian.us>)
Responses Re: First draft of PG 19 release notes
List pgsql-hackers

> On Jun 8, 2026, at 22:13, Bruce Momjian <bruce@momjian.us> wrote:
>
> On Sun, Jun  7, 2026 at 11:43:16PM -0400, Bruce Momjian wrote:
>>> * In section E.1.3.1.1 Optimizer, I think the item
>>>  "Allow extended statistics on virtual generated columns"
>>>  should come before all other items, because it's the only one that
>>>  requires user action in order for them to take advantage of it.  All
>>>  the other items refer to some optimization that occurs automatically.
>>
>> While the first item in each section is the most important, I then list
>> later items in groups that have similar characteristics, which I think
>> simplifies reading.  While I could order all items in importance order,
>> I think it would be much more confusing to read.  Right now the item you
>> mention is in a group of items about optimizer statistics.
>
> Actually, if there is no "most important" item in a section, I just
> order by placing the largest group of similar items first.  Here are the
> detais:
>
> https://wiki.postgresql.org/wiki/Creating_Major_Release_Notes
> order inside of sections
>               most important item first in section
>                  if none, then largest group first
>               group similar items together
>               order group by item importance
>               ideally the last item in a group will relate to the first item in the next group
>
> --
>  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.
>
>

Hi Bruce,

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
avoida table rewrite (Jian He) 
<ulink url="&commit_baseurl;a0b6ef29a">§</ulink>
</para>

<para>
Previously this always required a table rewrite.
</para>
</listitem>
```

So this item can be removed from the release note.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/







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