Distributed-Tracing 去除面板部分环境变量为空的值

Author: 1473371932

dashboards/DeepFlow-Templates/Distributed-Tracing.json

@@ -427,15 +427,15 @@
           ]
         },
         "datasource": "$datasource",
-        "definition": "{\"database\":\"flow_metrics\",\"sql\":\"SELECT pod_cluster as `value`, pod_cluster as `display_name` FROM `network.1m` WHERE `display_name` != '' AND time >= ${__from:date:seconds} AND time <= ${__to:date:seconds} GROUP BY `value` LIMIT 999999999999\",\"useAny\":true,\"useDisabled\":false}",
+        "definition": "{\"database\":\"flow_metrics\",\"sql\":\"SELECT pod_cluster as `value`, pod_cluster as `display_name` FROM `network.1m` WHERE exist(pod_cluster) AND time >= ${__from:date:seconds} AND time <= ${__to:date:seconds} GROUP BY `value` LIMIT 999999999999\",\"useAny\":true,\"useDisabled\":false}",
         "hide": 0,
         "includeAll": false,
         "multi": true,
         "name": "cluster",
         "options": [],
         "query": {
           "database": "flow_metrics",
-          "sql": "SELECT pod_cluster as `value`, pod_cluster as `display_name` FROM `network.1m` WHERE `display_name` != '' AND time >= ${__from:date:seconds} AND time <= ${__to:date:seconds} GROUP BY `value` LIMIT 999999999999",
+          "sql": "SELECT pod_cluster as `value`, pod_cluster as `display_name` FROM `network.1m` WHERE exist(pod_cluster) AND time >= ${__from:date:seconds} AND time <= ${__to:date:seconds} GROUP BY `value` LIMIT 999999999999",
           "useAny": true,
           "useDisabled": false
         },