高手帮我看看这句话哪里有问题String sql ="SELECT * FROM UserAccount WHERE uername =' " + username + "'AND password='" + password + "'"; 就是做登陆界面时,检测username和password的,但是我不知道两个同时写中间是要

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/04 07:29:51
高手帮我看看这句话哪里有问题String sql =

高手帮我看看这句话哪里有问题String sql ="SELECT * FROM UserAccount WHERE uername =' " + username + "'AND password='" + password + "'"; 就是做登陆界面时,检测username和password的,但是我不知道两个同时写中间是要
高手帮我看看这句话哪里有问题
String sql ="SELECT * FROM UserAccount WHERE uername =' " + username + "'AND password='" + password + "'";
就是做登陆界面时,检测username和password的,但是我不知道两个同时写中间是要加上AND么,好像不太对~

高手帮我看看这句话哪里有问题String sql ="SELECT * FROM UserAccount WHERE uername =' " + username + "'AND password='" + password + "'"; 就是做登陆界面时,检测username和password的,但是我不知道两个同时写中间是要
把前面的String 去掉就可以了.
要么 dim sql as string
sql=...
用and是正确的.

高手帮我看看这句话哪里有问题String sql =SELECT * FROM UserAccount WHERE uername =' + username + 'AND password=' + password + '; 就是做登陆界面时,检测username和password的,但是我不知道两个同时写中间是要 帮我看看这句话是不是有问题. 帮我看看这句话出自哪里的 极限与积分的计算请高手帮我看看问题究竟出现在哪里? 英语高手帮我看看这句话语法有问题么when he had arrived in the supermarket ,he did not know which kind of water he should bought.这句话传说过去式不是和过去完成时搭配么 九上二次根式问题,高手们帮我看看 一道简单的电路原理问题,高手帮我看看 英语高手帮我看看这句话的时态吧,总觉得有问题,谢谢!While in some countries people’s basic supply and nutritious needs have been met, they began to pursue better health. 英语高手帮我看看这句话的语法有没有问题,是虚拟语气的People wish that by imitating some aspects of famous star,they might have become a part of fasion. 大家帮我看看这句话有没有语病 英语高手们帮我看看这句话吧,Electorates are unlikely to be more forgiving things would happen to change in a moment 大家帮我看看这句话有没有问题能否翻译 语文老师来下看看这句话有问题不孩子,能帮我老太太买2斤蜂蜜糖糕吗? 一道C++作业,求帮我看看自己写的哪里错了#include#includeclass Teacher{public:Teacher(string n,int a,string s,string add,string t,string tit){name=n;age=a;sex=s;address=add;tel=t;title=tit;}void display();protected:string name;int age;s 帮我看看这一题是不是有问题?! 大家帮我看看这句话哪里有问题Hell is around the corner.我理解为:地狱即将到来.可是有个英语专八的人说这句话有问题,缺少动词给我改成了:Devil will come 我不想写的这么直白,请问大家我的句 请英语高手看看这句话语法有问题没All this presented new safety problems. 有个字体我不懂,请高手帮我看看