[請益] update一問
小弟目前為公司寫個簡易程式,database中有二個table,
orders是訂單的table,customers是客戶的table,如下圖:
customer欄位 orders欄位
----------- -----------
|-cID | |-oID |
|-apply | |-apply |
|-... | |-cID |
| | |-... |
----------- -----------
假設目前customers中apply(申請者)有高雄與台南 兩筆客戶,cID分別是高雄1、台南2
但現在發現有個bug..
若在前端網頁上修改"高雄"客戶的訂單,將原本的apply:高雄更改為apply:台南,但
資料庫的orders table中的cID還是1,應該要2才正確。
想請問orders table中的cID我該如何下SQL指令,讓它如果有更改apply(申請者)時也
更新對應的cid呢? 感恩!!!
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