From db9c14fdd31b88e0714156b4ea267112a03ff88f Mon Sep 17 00:00:00 2001
From: Alexander Zobnin <alexanderzobnin@gmail.com>
Date: Fri, 14 Sep 2018 19:09:30 +0300
Subject: [PATCH] db connector: fix error when no series returned, fix #571

---
 src/datasource-zabbix/zabbix/connectors/sql/sqlConnector.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/datasource-zabbix/zabbix/connectors/sql/sqlConnector.js b/src/datasource-zabbix/zabbix/connectors/sql/sqlConnector.js
index f3fbd39..f436fdc 100644
--- a/src/datasource-zabbix/zabbix/connectors/sql/sqlConnector.js
+++ b/src/datasource-zabbix/zabbix/connectors/sql/sqlConnector.js
@@ -147,7 +147,7 @@ export class SQLConnector extends DBConnector {
 function convertGrafanaTSResponse(time_series, items, addHostName) {
   //uniqBy is needed to deduplicate
   var hosts = _.uniqBy(_.flatten(_.map(items, 'hosts')), 'hostid');
-  let grafanaSeries = _.map(time_series, series => {
+  let grafanaSeries = _.map(_.compact(time_series), series => {
     let itemid = series.name;
     var item = _.find(items, {'itemid': itemid});
     var alias = item.name;