MDL-11347 yet more beautification proposed by Eloy

diff --git a/lib/accesslib.php b/lib/accesslib.php
index 6846b2d90d2f087c5afbbcea69344243997b5d76..a65449030aa262d324a63c2b0d92b345a89c8541 100755 (executable)
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -4451,6 +4451,7 @@ function build_context_path($force=false) {
         $emptyclause = '';
     }
 
+    // TODO: following could be improved with WHERE + $emptyclause, but there should be a better way
     $upathsql = "UPDATE {$CFG->prefix}context
                     SET path = COALESCE((SELECT ct.path FROM {$CFG->prefix}$temptable ct WHERE {$CFG->prefix}context.id=ct.id), {$CFG->prefix}context.path)";