我想改善字段的名称更明显它是什么意思..是字段名称好吗?或者可以改变什么以使其更明显?如何改善字段名称
mysql> select * from order_items;
+----+----------+--------+----------+------------+-------+
| id | order_id | name | quantity | item_price | total |
+----+----------+--------+----------+------------+-------+
| 1 | 5 | Item 1 | 2 | 3.00 | 6.00 |
| 2 | 5 | Item 2 | 1 | 2.00 | 2.00 |
+----+----------+--------+----------+------------+-------+
mysql> select * from orders;
+----+---------+---------+-----------------+---------------+----------------+----------+---------------+------------+----------------+------------+----------------------+--------------------+--------------------+----------------------+
| id | shop_id | user_id | shipping_method | shipping_fees | payment_method | card_fee | commision_fee | item_total | customer_total | shop_total | shop_total_remaining | our_commission_net | our_commission_vat | our_commission_gross |
+----+---------+---------+-----------------+---------------+----------------+----------+---------------+------------+----------------+------------+----------------------+--------------------+--------------------+----------------------+
| 5 | 29 | 9 | delivery | 1.00 | card | 0.50 | 13 | 8.00 | 9.50 | 9.00 | 7.83 | 1.17 | 0.23 | 1.40 |
+----+---------+---------+-----------------+---------------+----------------+----------+---------------+------------+----------------+------------+----------------------+--------------------+--------------------+----------------------+
字段名称说明:
item_total
从总成本order_items.order_id = 5customer_total
客户支付(item_total
+card_fee
+shipping_fee
) 总成本
shop_total
总为了使商店(item_total
+shipping_fees
)shop_total_remaining
总剩余支付回店(shop_total
-our_commission_net
)our_commission_net
委员会,我必使(commission_fee
*shop_total
/100)our_commission_gross
佣金含增值税(our_commission_net
+our_commission_vat
)
我添加了不必要的字段吗?
我用PHP来计算成本。
是的,您有不需要的列(在db nomeclature中,这就是所谓的'字段')。在order_items中,total是一个计算值,除非你没有告诉我们什么。同上(可能)订单中的许多其他列。 – John
@John哪个总共在order_items表中?我已经在问题 –