public function up(Schema $schema)
{
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_nodedata ALTER properties SET NOT NULL");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_nodedata ALTER dimensionvalues SET NOT NULL");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_nodedata ALTER accessroles SET NOT NULL");
}