Tweak comment

diff --git a/maintenance/populateParentId.php b/maintenance/populateParentId.php
index 863d7ed..4b73070 100644 (file)
--- a/maintenance/populateParentId.php
+++ b/maintenance/populateParentId.php
@@ -41,7 +41,7 @@ function populate_rev_parent_id( $db ) {
                foreach( $res as $row ) {
                        # First, check rows with the same timestamp other than this one
                        # with a smaller rev ID. The highest ID "wins". This avoids loops
-                       # as either id or timestamp need to be going from parent_id to parent_id
+                       # as timestamp can only decrease and never loops with IDs (from parent to parent)
                        $previousID = $db->selectField( 'revision', 'rev_id', 
                                array( 'rev_page' => $row->rev_page, 'rev_timestamp' => $row->rev_timestamp,
                                        "rev_id < {$row->rev_id}" ),