From 434c12601c59f3c1e484682eb0ef66538859679c Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Fri, 28 Aug 2026 16:37:11 -0400
Subject: [PATCH] Update .abi-compliance-history for join removal fix.

Bug: #19560
Reported-by: Orestis Markou <orestis@orestis.gr>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Richard Guo <guofenglinux@gmail.com>
Reviewed-by: Thom Brown <thom@linux.com>
Reviewed-by: Jacob Brazeal <jacob.brazeal@gmail.com>
Discussion: https://postgr.es/m/1186816.1784573544@sss.pgh.pa.us
Backpatch-through: 16-18
---
 .abi-compliance-history | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/.abi-compliance-history b/.abi-compliance-history
index 7e29e26d581..9541b405077 100644
--- a/.abi-compliance-history
+++ b/.abi-compliance-history
@@ -18,6 +18,16 @@
 # Be sure to replace "<ADD JUSTIFICATION HERE>" with details of your change and
 # why it is deemed acceptable.
 
+986870baa06bc70245ee731d83486d4ed529c223
+#
+# Perform join removal by editing the query's jointree.
+# 2026-08-28 15:12:26 -0400
+#
+# remove_useless_joins (now remove_useless_outer_joins) and
+# reduce_unique_semijoins have changed behavior and return types.
+# I am unaware of any impacted third-party code; if there is any,
+# it is probably vulnerable to the same bugs this patch is fixing.
+
 7ce056b1798b81a287ae00e2c06f210fd0e59be2
 #
 # Check for USAGE privilege on types used by stored expressions.