Re: Detailed release notes

> On 26 Jul 2024, at 14:30, Marcos Pegoraro <marcos@f10.com.br> wrote:
>
> I'm now using version 14 and planning to update to 17 as soon as it comes available. Then looking carefully to
releasenotes to see exactly what I'll get when updated I see lots of unexplained features. Just because release notes
doesnot explain exactly what that change does. And I don't have a way to get what code or messages generated that
feature.

There is a way, but it's not exactly visible from reading the release notes.

>     • Allow query nodes to be run in parallel in more cases (Tom Lane)
> Cool this feature, but when and what kind of query will use this ?

Reading the source of the release notes will show a comment which links to the
commit.  The source can be seen here:

    https://github.com/postgres/postgres/blob/REL_17_STABLE/doc/src/sgml/release-17.sgml

..and the comment for this item is:

<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2023-07-14 [e08d74ca1] Allow plan nodes with initPlans to be considered paralle
-->

      <listitem>
       <para>
       Allow query nodes to be run in parallel in more cases (Tom Lane)
       </para>
      </listitem>

This comment tells us the relevant commit is e08d74ca1, which can be found here:

    https://github.com/postgres/postgres/commit/e08d74ca1

This in turn leads to the mailinglist discussion for this specific feature:

    https://www.postgresql.org/message-id/1129530.1681317832@sss.pgh.pa.us

--
Daniel Gustafsson