fixed query

dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java

@@ -257,7 +257,6 @@ public class ModelConstants {
     public static final String ALARM_ORIGINATOR_NAME_PROPERTY = "originator_name";
     public static final String ALARM_ORIGINATOR_LABEL_PROPERTY = "originator_label";
     public static final String ALARM_ORIGINATOR_TYPE_PROPERTY = "originator_type";
-
     public static final String ALARM_ORIGINATOR_DISPLAY_NAME_PROPERTY = "originator_display_name";
     public static final String ALARM_SEVERITY_PROPERTY = "severity";
     public static final String ALARM_ASSIGNEE_ID_PROPERTY = "assignee_id";

dao/src/main/java/org/thingsboard/server/dao/sql/query/DefaultAlarmQueryRepository.java

@@ -107,7 +107,7 @@ public class DefaultAlarmQueryRepository implements AlarmQueryRepository {
             " a.type as type, " +
             " a.originator_name as originator_name, " +
             " a.originator_label as originator_label, " +
-            " coalesce(a.originator_label, a.originator_label) as originator_display_name, " +
+            " coalesce(a.originator_label, a.originator_name) as originator_display_name, " +
             " a.assignee_first_name as assignee_first_name, " +
             " a.assignee_last_name as assignee_last_name, " +
             " a.assignee_email as assignee_email, " +