SQL多表

下面是将值插入一个表（MemberRecord）的示例

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如何在两个表中插入值？当我尝试下面的代码时，我得到了重复的变量。即使我更改了变量名，它仍然会给我错误

//CreateUser method
        public boolean createUser(){
            boolean success = false;
            DBController db = new DBController();
            db.getConnection();
            String sql = "INSERT INTO MemberRecord(id, name, email, contactNo, password, gender, nationality, dateOfBirth, address, postalCode, secQues, secAns, userType)";
            sql += "VALUES('" + id + "','" + name + "','" + email + "','" + cNo + "','" + pwd + "','" +gen + "','" + nationality + "','" + dob + "','" + address + "','" + pCode + "','" + secQuestion +"','"+secAnswer +userType + "')";

            String sql = "INSERT INTO PaymentDetails(creditCardNo,creditCardType,expiryDate,CVV)";
            sql += "VALUES('" + cCardNo + "','" + cCardType + "','" + expiryDate + "','" + cvv + "')";

            if (db.updateRequest(sql)==1) success = true;
            db.terminate();
            return success;

        }

试试这个：

String sql = "INSERT INTO MemberRecord(id, name, email, contactNo, password, gender, nationality, dateOfBirth, address, postalCode, secQues, secAns, userType)";
sql += "VALUES('" + id + "','" + name + "','" + email + "','" + cNo + "','" + pwd + "','" +gen + "','" + nationality + "','" + dob + "','" + address + "','" + pCode + "','" + secQuestion +"','"+secAnswer +userType + "');";

sql += "INSERT INTO PaymentDetails(creditCardNo,creditCardType,expiryDate,CVV)";
sql += "VALUES('" + cCardNo + "','" + cCardType + "','" + expiryDate + "','" + cvv + "')";

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我添加了一个

在第一条sql语句的末尾。
如果dob和expriry date的数据类型是date，下面的代码可能会有所帮助

TO_DATE('"+ str+"','yyyy/mm/dd')

下面给出了修改后的代码

String sql = "INSERT INTO MemberRecord(id, name, email, contactNo, password, gender, nationality, dateOfBirth, address, postalCode, secQues, secAns, userType)";
sql += "VALUES('" + id + "','" + name + "','" + email + "','" + cNo + "','" + pwd + "','" +gen + "','" + nationality + "',TO_DATE('" + dob + "','yyyy/mm/dd'),'" + address + "','" + pCode + "','" + secQuestion +"','"+secAnswer +userType + "');";

sql += "INSERT INTO PaymentDetails(creditCardNo,creditCardType,expiryDate,CVV)";
sql += "VALUES('" + cCardNo + "','" + cCardType + "',TO_DATE('" + expiryDate + "','yyyy/mm/dd'),'" + cvv + "')";

这是C#还是Java？你用的是什么数据库？Java，我用的数据库是mysqlCheck-out。这可能对你有帮助。
String sql = "INSERT INTO MemberRecord(id, name, email, contactNo, password, gender, nationality, dateOfBirth, address, postalCode, secQues, secAns, userType)";
sql += "VALUES('" + id + "','" + name + "','" + email + "','" + cNo + "','" + pwd + "','" +gen + "','" + nationality + "',TO_DATE('" + dob + "','yyyy/mm/dd'),'" + address + "','" + pCode + "','" + secQuestion +"','"+secAnswer +userType + "');";

sql += "INSERT INTO PaymentDetails(creditCardNo,creditCardType,expiryDate,CVV)";
sql += "VALUES('" + cCardNo + "','" + cCardType + "',TO_DATE('" + expiryDate + "','yyyy/mm/dd'),'" + cvv + "')";