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From: Chao Li <[email protected]>
To: Bruce Momjian <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: First draft of PG 19 release notes
Date: Tue, 9 Jun 2026 14:59:17 +0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>



> On Jun 8, 2026, at 22:13, Bruce Momjian <[email protected]> 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  <[email protected]>        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 <[email protected]>
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.

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










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