zabbix=# select * from history_str where itemid=26526 and value like '%serv_14637%' order by clock,ns;
 itemid |   clock    |                     value                      |    ns     
--------+------------+------------------------------------------------+-----------
  26526 | 1473505501 | dd.mm.yyyy hh:mm:ss service serv_14637 stopped | 343648668
  26526 | 1473505510 | dd.mm.yyyy hh:mm:ss service serv_14637 started | 446114520
(2 rows)