From 7e7f7fc803e71d810eba2eda3fe46cff35ddd0d0 Mon Sep 17 00:00:00 2001
From: Paul Holden <paulh@moodle.com>
Date: Tue, 10 Oct 2023 10:06:06 +0100
Subject: [PATCH] MDL-79635 group: ensure unique params used to determine
 visibility.

Or we'll trigger DML "Incorrect number of query parameters" exception.
---
 lib/grouplib.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/grouplib.php b/lib/grouplib.php
index 8e78389821a..14df892aefe 100644
--- a/lib/grouplib.php
+++ b/lib/grouplib.php
@@ -1359,7 +1359,8 @@ function groups_get_members_join($groupids, $useridcolumn, context $context = nu
                     [$visibilitywhere, $visibilityparams] = \core_group\visibility::sql_member_visibility_where(
                         $prefix . 'g2',
                         $prefix . 'gm2',
-                        $ualias
+                        $ualias,
+                        $prefix . 'param_'
                     );
                     $where .= ' AND ' . $visibilitywhere;
                     $param = array_merge($param, $visibilityparams);