addSql('ALTER TABLE variable_flux ADD export_id INT DEFAULT NULL'); $this->addSql('ALTER TABLE variable_flux ADD CONSTRAINT FK_9823D5164CDAF82 FOREIGN KEY (export_id) REFERENCES export (id)'); $this->addSql('CREATE UNIQUE INDEX UNIQ_9823D5164CDAF82 ON variable_flux (export_id)'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE variable_flux DROP FOREIGN KEY FK_9823D5164CDAF82'); $this->addSql('DROP INDEX UNIQ_9823D5164CDAF82 ON variable_flux'); $this->addSql('ALTER TABLE variable_flux DROP export_id'); } }