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path: root/schema/mysql-legacy-changes/upgrade_15.sql
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CREATE TABLE icinga_hostgroup_inheritance (
  hostgroup_id INT(10) UNSIGNED NOT NULL,
  parent_hostgroup_id INT(10) UNSIGNED NOT NULL,
  weight MEDIUMINT UNSIGNED DEFAULT NULL,
  PRIMARY KEY (hostgroup_id, parent_hostgroup_id),
  UNIQUE KEY unique_order (hostgroup_id, weight),
  CONSTRAINT icinga_hostgroup_inheritance_hostgroup
  FOREIGN KEY host (hostgroup_id)
  REFERENCES icinga_hostgroup (id)
    ON DELETE CASCADE
    ON UPDATE CASCADE,
  CONSTRAINT icinga_hostgroup_inheritance_parent_hostgroup
  FOREIGN KEY host (parent_hostgroup_id)
  REFERENCES icinga_hostgroup (id)
    ON DELETE RESTRICT
    ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8;