[Database version 1520] Reset user.parent-uid to null if it is set to zero

database.sql

@@ -1,6 +1,6 @@
 -- ------------------------------------------
 -- Friendica 2023.09-dev (Giant Rhubarb)
--- DB_UPDATE_VERSION 1519
+-- DB_UPDATE_VERSION 1520
 -- ------------------------------------------
 
 

static/dbstructure.config.php

@@ -54,8 +54,9 @@
 
 use Friendica\Database\DBA;
 
+// This file is required several times during the test in DbaDefinition which justifies this condition
 if (!defined('DB_UPDATE_VERSION')) {
-	define('DB_UPDATE_VERSION', 1519);
+	define('DB_UPDATE_VERSION', 1520);
 }
 
 return [

update.php

@@ -1326,3 +1326,10 @@ function update_1518()
 
 	return Update::SUCCESS;
 }
+
+function update_1520(): int
+{
+	DBA::update('user', ['parent-uid' => null], ['parent-uid' => 0]);
+
+	return Update::SUCCESS;
+}