abortIf($this->connection->getDatabasePlatform()->getName() != 'mysql', 'Migration can only be executed safely on \'mysql\'.'); $this->addSql('ALTER TABLE aftersales_detail ADD refunded_num BIGINT DEFAULT 0 COMMENT \'退款数量\''); $this->addSql('ALTER TABLE items ADD delivery_time INT DEFAULT 0 COMMENT \'发货时间,如2,表示2天发货\''); } /** * @param Schema $schema */ public function down(Schema $schema): void { } }