addSql('ALTER TABLE counter CHANGE start_time start_time TIME DEFAULT NULL COMMENT \'(DC2Type:time_immutable)\', CHANGE end_time end_time TIME DEFAULT NULL COMMENT \'(DC2Type:time_immutable)\''); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE counter CHANGE start_time start_time TIME NOT NULL COMMENT \'(DC2Type:time_immutable)\', CHANGE end_time end_time TIME NOT NULL COMMENT \'(DC2Type:time_immutable)\''); } }