protected function doSha1LegacyUpdates() {
$count = 0;
$db = $this->getDB( DB_MASTER );
- $res = $db->select( 'archive', '*', array( 'ar_rev_id IS NULL' ), __METHOD__ );
+ $res = $db->select( 'archive', '*',
+ array( 'ar_rev_id IS NULL', 'ar_sha1' => '' ), __METHOD__ );
$updateSize = 0;
$db->begin( __METHOD__ );