addSql('ALTER TABLE client DROP FOREIGN KEY FK_C7440455F7E54CF3'); $this->addSql('ALTER TABLE client ADD CONSTRAINT FK_C7440455F7E54CF3 FOREIGN KEY (og_live_id) REFERENCES og_live (id) ON DELETE SET NULL'); } 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_C7440455F7E54CF3'); $this->addSql('ALTER TABLE client ADD CONSTRAINT FK_C7440455F7E54CF3 FOREIGN KEY (og_live_id) REFERENCES og_live (id)'); } }