addSql('ALTER TABLE assignment DROP cost_center'); $this->addSql('ALTER TABLE job_profile ADD cost_unit VARCHAR(255) DEFAULT NULL'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE job_profile DROP cost_unit'); $this->addSql('ALTER TABLE assignment ADD cost_center VARCHAR(255) DEFAULT NULL'); } }