From: Bruce Momjian <bruce@momjian.us>
Date: Wed, 15 May 2024 00:36:36 +0000 (-0400)
Subject: doc PG 17 relnotes:  add two optimizer items
X-Git-Tag: REL_17_BETA1~46
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=1a48f8b40dc0fe0af67303d7e05df5f93cad36fb;p=postgresql.git

doc PG 17 relnotes:  add two optimizer items

One is about subqueries becoming joins and the other is about optimizing
LIMIT by improving startup cost.

Reported-by: Andy Fan

Discussion: https://postgr.es/m/87h6f4ncc6.fsf@163.com

Reviewed-by: David Rowley

Backpatch-through: master
---

diff --git a/doc/src/sgml/release-17.sgml b/doc/src/sgml/release-17.sgml
index 38c14970822..fa0a703629c 100644
--- a/doc/src/sgml/release-17.sgml
+++ b/doc/src/sgml/release-17.sgml
@@ -356,6 +356,28 @@ Improve optimization of range values when using containment operators &lt;@ and
 </para>
 </listitem>
 
+<!--
+Author: Alexander Korotkov <akorotkov@postgresql.org>
+2024-02-15 [9f1337639] Pull up ANY-SUBLINK with the necessary lateral support.
+-->
+
+<listitem>
+<para>
+Allow correlated IN subqueries to be transformed into joins (Andy Fan, Tom Lane)
+</para>
+</listitem>
+
+<!--
+Author: David Rowley <drowley@postgresql.org>
+2023-10-05 [a8a968a82] Consider cheap startup paths in add_paths_to_append_rel
+-->
+
+<listitem>
+<para>
+Improve optimization of the LIMIT clause on partitioned tables, inheritance parents, and UNION ALL queries (Andy Fan, David Rowley)
+</para>
+</listitem>
+
 <!--
 Author: Tom Lane <tgl@sss.pgh.pa.us>
 2023-07-14 [e08d74ca1] Allow plan nodes with initPlans to be considered paralle