Handle possible null values in campaign dashboard orderByClause

diff --git a/CRM/Campaign/BAO/Campaign.php b/CRM/Campaign/BAO/Campaign.php
index 50020a4007c7ba175f95769fbfadd83d4718aee8..ef9c13bc4835525aaf757e66b1b0e37a3008d381 100644 (file)
--- a/CRM/Campaign/BAO/Campaign.php
+++ b/CRM/Campaign/BAO/Campaign.php
@@ -399,7 +399,7 @@ INNER JOIN civicrm_option_group grp ON ( campaign_type.option_group_id = grp.id
       if ($orderOnCampaignTable) {
         $orderByClause = "ORDER BY campaign.{$sortParams['sort']} {$sortParams['sortOrder']}";
       }
-      $orderByClause .= ", campaign.id {$sortParams['sortOrder']}";
+      $orderByClause = ( $orderByClause ) ?  $orderByClause . ", campaign.id {$sortParams['sortOrder']}" : $orderByClause;
       $limitClause = "LIMIT {$sortParams['offset']}, {$sortParams['rowCount']}";
     }