From 8c44681c23fe20e3c578f6db47b0ac67df0ac4cb Mon Sep 17 00:00:00 2001
From: stronk7 <stronk7>
Date: Wed, 24 Sep 2008 17:35:42 +0000
Subject: [PATCH] Substring MSSQL function *requires* 3rd parameter - MDL-16655
 ; merged from 19_STABLE

---
 lib/accesslib.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/accesslib.php b/lib/accesslib.php
index 8913bceeca..84a731d62d 100755
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -5403,8 +5403,13 @@ function context_moved($context, $newparent) {
     $DB->execute($sql, $params);
 
     $len = strlen($frompath);
+    /// MDL-16655 - Substring MSSQL function *requires* 3rd parameter
+    $substr3rdparam = '';
+    if ($DB->get_dbfamily() == 'mssql') {
+        $substr3rdparam = ', len(path)';
+    }
     $sql = "UPDATE {context}
-               SET path = ".$DB->sql_concat("?", 'SUBSTR(path, '.$len.' +1)')."
+               SET path = ".$DB->sql_concat("?", $DB->sql_substr() .'(path, '.$len.' +1'.$substr3rdparam.')')."
                    $setdepth
              WHERE path LIKE ?";
     $params = array($newpath, "{$frompath}/%");
-- 
2.39.5