public function up(Schema $schema)
{
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");
$this->addSql("UPDATE typo3_typo3cr_domain_model_nodedata SET path = LOWER(path), parentpath = LOWER(parentpath), pathhash = MD5(LOWER(path)), parentpathhash = MD5(LOWER(parentpath))");
}