Neos\Flow\Persistence\Doctrine\Migrations\Version20150224171107::up PHP Метод

    public function up(Schema $schema)
    {
        $this->abortIf($this->connection->getDatabasePlatform()->getName() != "mysql");
        $this->addSql("ALTER TABLE typo3_neos_eventlog_domain_model_event DROP FOREIGN KEY FK_30AB3A75B684C08");
        $this->addSql("ALTER TABLE typo3_neos_eventlog_domain_model_event DROP PRIMARY KEY");
        $this->addSql("UPDATE typo3_neos_eventlog_domain_model_event e, (SELECT DISTINCT uid, persistence_object_identifier FROM typo3_neos_eventlog_domain_model_event) p SET e.parentevent = p.uid WHERE parentevent IS NOT NULL AND p.persistence_object_identifier = e.parentevent");
        $this->addSql("ALTER TABLE typo3_neos_eventlog_domain_model_event DROP persistence_object_identifier, CHANGE parentevent parentevent INT UNSIGNED DEFAULT NULL, CHANGE uid uid INT UNSIGNED AUTO_INCREMENT NOT NULL");
        $this->addSql("ALTER TABLE typo3_neos_eventlog_domain_model_event ADD CONSTRAINT FK_30AB3A75B684C08 FOREIGN KEY (parentevent) REFERENCES typo3_neos_eventlog_domain_model_event (uid)");
        $this->addSql("ALTER TABLE typo3_neos_eventlog_domain_model_event ADD PRIMARY KEY (uid)");
    }