addSql('ALTER TABLE client DROP FOREIGN KEY FK_C7440455FB84408A'); $this->addSql('ALTER TABLE client ADD CONSTRAINT FK_C7440455FB84408A FOREIGN KEY (organizational_unit_id) REFERENCES organizational_unit (id) ON DELETE CASCADE'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE client DROP FOREIGN KEY FK_C7440455FB84408A'); $this->addSql('ALTER TABLE client ADD CONSTRAINT FK_C7440455FB84408A FOREIGN KEY (organizational_unit_id) REFERENCES organizational_unit (id)'); } }