addSql('ALTER TABLE activity DROP comment_comment'); $this->addSql('ALTER TABLE activity DROP comment_userId'); $this->addSql('ALTER TABLE activity DROP comment_date'); } public function getDescription(): string { return ''; } public function up(Schema $schema): void { // this up() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE activity ADD comment_comment TEXT DEFAULT NULL'); $this->addSql('ALTER TABLE activity ADD comment_userId INT DEFAULT NULL'); $this->addSql('ALTER TABLE activity ADD comment_date TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT NULL'); } }