Zabbix

........S. [ZBX-25495] reverted escalator query fix for Oracle to optimise MySQL query, also removed redundant 'distinct' from original query

Merge in ZBX/zabbix from feature/ZBX-25495-7.3 to master

* commit '72249f75c63483304090d75f547a7a97d9e0a7bf':
  ........S. [ZBX-25495] updated Changelog
  ........S. [ZBX-25495] fixed ticket number
  ........S. [ZBX-20249] reverted escalator query fix for Oracle to optimise MySQL query