addSql('ALTER TABLE chill_3party.third_party DROP CONSTRAINT fk_d952467bf5b7af75'); $this->addSql('ALTER TABLE chill_3party.third_party ADD CONSTRAINT fk_d952467bf5b7af75 FOREIGN KEY (address_id) REFERENCES chill_main_address (id) NOT DEFERRABLE INITIALLY IMMEDIATE'); } public function getDescription(): string { return 'Specify ON DELETE behaviour to handle deletion of parents in associated tables'; } public function up(Schema $schema): void { $this->addSql('ALTER TABLE chill_3party.third_party DROP CONSTRAINT FK_D952467BF5B7AF75'); $this->addSql('ALTER TABLE chill_3party.third_party ADD CONSTRAINT FK_D952467BF5B7AF75 FOREIGN KEY (address_id) REFERENCES chill_main_address (id) ON DELETE SET NULL NOT DEFERRABLE INITIALLY IMMEDIATE'); } }