From dfb264b21908e3476d8c64de6f3fc7e0ac39bbbe Mon Sep 17 00:00:00 2001
From: Seamus Lee <seamuslee001@gmail.com>
Date: Fri, 19 Oct 2018 08:28:00 +1100
Subject: [PATCH] Disable ONLY_FULL_GROUP_BY sql mode when doing add2group
 function on the Activity Detail report to avoid fatal error

---
 CRM/Report/Form/Activity.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CRM/Report/Form/Activity.php b/CRM/Report/Form/Activity.php
index 25d19b48a16..2eb56c0a740 100644
--- a/CRM/Report/Form/Activity.php
+++ b/CRM/Report/Form/Activity.php
@@ -697,7 +697,9 @@ public function add2group($groupID) {
 GROUP BY civicrm_activity_id $having {$this->_orderBy}";
     $select = 'AS addtogroup_contact_id';
     $query = str_ireplace('AS civicrm_contact_contact_target_id', $select, $query);
+    CRM_Core_DAO::disableFullGroupByMode();
     $dao = $this->executeReportQuery($query);
+    CRM_Core_DAO::reenableFullGroupByMode();
 
     $contactIDs = array();
     // Add resulting contacts to group