Merge branch 'main' into multi-tenant

database/upgrade/upg_alarm_event.sql

@@ -133,4 +133,9 @@ DELETE FROM `alarm` WHERE `orig_severity` = 'Event';
 
 COMMIT;
 
+DELETE FROM alarm_event WHERE id NOT IN (SELECT MIN(id) FROM alarm_event GROUP BY `ne_type`, `ne_id`, `alarm_id`, `event_time`);
+
+ALTER TABLE `alarm_event` 
+ADD UNIQUE INDEX IF NOT EXISTS `idx_uni_aid_ne_time`(`ne_type`, `ne_id`, `alarm_id`, `event_time`) USING BTREE;
+
 SET FOREIGN_KEY_CHECKS = 1;