我有四个表FDQueries(Firebird 3.0)国家,地区,部门和城市,还有第五个temporay FDQuery,在其中显示CITIES表以及来自其他表的相关数据,如下所示:
import random
def topic_ch():
print ("hello you have 3 topics chose your topic by preesing the topic number \n 1-random asking \n 2- quizz")
topc = input()
if topc == "1":
topic_1()
def topic_1():
set1 = {1: "who is the presedint of USA ? :\n -1 D.Trump 2-Emmanuel Macron\n -3 George W. Bush 4-Bill Clinton:",
2:"who is the presedint of France ? :\n -1 D.Trump 2-Emmanuel Macron\n -3 George W. Bush 4-Bill Clinton:"}
print (random.choice(set1))
ans = input()
for set1[1] in set1:
if ans == "1":
print ("correct")
break
else:
print ("opss")
break
for set1[2] in set1:
if ans == "3":
print ("correct")
break
topic_ch()
该连接工作正常,并显示了我想要的内容:
现在完成了,我希望用户直接从显示联接表的网格中编辑CITIES表(临时的)。我的问题是如何使用仅发布原始CITIES表的简单方式进行正确的更新
非常抱歉,我第一个提出问题
答案 0 :(得分:0)
您可以使用以下查询通过联接更新表-
UPDATE CITIES
SET CITYPOPULATION = YOUR_UPDATED_VALUE
FROM CITIES C
JOIN DEPARTMENTS D ON C.departmentname = D.NAME
JOIN COUNTRIES CT ON D.countryname = CT.name;
您可以阅读this文章以进行进一步更新。