From 80f9278d343fb3e95c68ff424a9a0d79063d5e8b Mon Sep 17 00:00:00 2001
From: Jakub Vrana <jakub@vrana.cz>
Date: Wed, 14 Jan 2026 21:59:58 +0000
Subject: [PATCH] PostgreSQL: Allow creating NOT DEFERRABLE foreign keys

---
 CHANGELOG.md                    | 1 +
 adminer/drivers/pgsql.inc.php   | 3 ++-
 adminer/foreign.inc.php         | 1 +
 adminer/include/editing.inc.php | 1 +
 4 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index afbcb0d9..0e37c63d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 - Pretty print JSON in edit
 - PostgreSQL: Offer foreign keys in create table
 - PostgreSQL: Add missing parentheses to CHECK export
+- PostgreSQL: Allow creating NOT DEFERRABLE foreign keys
 - PostgreSQL: Remove duplicate DEFERRABLE in foreign key export
 - PostgreSQL: Add schema to sequence and and view export
 - PostgreSQL: Mark unique partial indexes as unique (bug #1172)
diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index 474a516d..e85d8d34 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -561,12 +561,13 @@ ORDER BY indisprimary DESC, indisunique DESC", $connection2) as $row
 	function foreign_keys($table) {
 		$return = array();
 		foreach (
-			get_rows("SELECT conname, condeferrable::int AS deferrable, pg_get_constraintdef(oid) AS definition
+			get_rows("SELECT conname, condeferrable::int AS deferrable, condeferred::int AS deferred, pg_get_constraintdef(oid) AS definition
 FROM pg_constraint
 WHERE conrelid = " . driver()->tableOid($table) . "
 AND contype = 'f'::char
 ORDER BY conkey, conname") as $row
 		) {
+			$row['deferrable'] = ($row['deferrable'] ? '' : 'NOT ') . 'DEFERRABLE' . ($row['deferred'] ? ' INITIALLY DEFERRED' : '');
 			if (preg_match('~FOREIGN KEY\s*\((.+)\)\s*REFERENCES (.+)\((.+)\)(.*)$~iA', $row['definition'], $match)) {
 				$row['source'] = array_map('Adminer\idf_unescape', array_map('trim', explode(',', $match[1])));
 				if (preg_match('~^(("([^"]|"")+"|[^"]+)\.)?"?("([^"]|"")+"|[^"]+)$~', $match[2], $match2)) {
diff --git a/adminer/foreign.inc.php b/adminer/foreign.inc.php
index 5f124b7d..bfccbf08 100644
--- a/adminer/foreign.inc.php
+++ b/adminer/foreign.inc.php
@@ -103,6 +103,7 @@ foreach ($row["source"] as $key => $val) {
 <p>
 <label><?php echo lang('ON DELETE'); ?>: <?php echo html_select("on_delete", array(-1 => "") + explode("|", driver()->onActions), $row["on_delete"]); ?></label>
 <label><?php echo lang('ON UPDATE'); ?>: <?php echo html_select("on_update", array(-1 => "") + explode("|", driver()->onActions), $row["on_update"]); ?></label>
+<?php echo (DRIVER === 'pgsql' ? html_select("deferrable", array('NOT DEFERRABLE', 'DEFERRABLE', 'DEFERRABLE INITIALLY DEFERRED'), $row["deferrable"]) . ' ' : ''); ?>
 <?php echo doc_link(array(
 	'sql' => "innodb-foreign-key-constraints.html",
 	'mariadb' => "foreign-keys/",
diff --git a/adminer/include/editing.inc.php b/adminer/include/editing.inc.php
index 1aa74faf..ddcf7f58 100644
--- a/adminer/include/editing.inc.php
+++ b/adminer/include/editing.inc.php
@@ -491,6 +491,7 @@ function format_foreign_key(array $foreign_key): string {
 		. " (" . implode(", ", array_map('Adminer\idf_escape', $foreign_key["target"])) . ")" //! reuse $name - check in older MySQL versions
 		. (preg_match("~^(" . driver()->onActions . ")\$~", $foreign_key["on_delete"]) ? " ON DELETE $foreign_key[on_delete]" : "")
 		. (preg_match("~^(" . driver()->onActions . ")\$~", $foreign_key["on_update"]) ? " ON UPDATE $foreign_key[on_update]" : "")
+		. ($foreign_key["deferrable"] ? " $foreign_key[deferrable]" : "")
 	;
 }