addSql('ALTER TABLE combatant ADD armor_class SMALLINT DEFAULT 10 NOT NULL'); $this->addSql('UPDATE combatant c JOIN enemy e ON c.enemy_id = e.id SET c.armor_class = e.armor_class'); $this->addSql('ALTER TABLE combatant ALTER armor_class DROP DEFAULT'); } public function down(Schema $schema): void { $this->addSql('ALTER TABLE combatant DROP armor_class'); } }