addSql('ALTER TABLE event CHANGE start_on start_on DATETIME NOT NULL, CHANGE end_on end_on DATETIME NOT NULL'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE event CHANGE start_on start_on DATETIME NOT NULL COMMENT \'(DC2Type:datetime_immutable)\', CHANGE end_on end_on DATETIME NOT NULL COMMENT \'(DC2Type:datetime_immutable)\''); } }