外键不等于主键

Question

所以我的查询看起来像这样

`$dbUser = "SELECT * FROM accaount, role WHERE Username = :username AND Password = :password UNION SELECT * FROM role , accaount WHERE Role_idRole = idRole ";

$query = $conn->prepare( $dbUser);
$query->bindParam(":username", $Username);
$query->bindParam(":password", $Password);
$query->execute();`

错误是UNION SELECT * FROM role , accaount WHERE Role_idRole = idRole.我试图做的是使我的外键（Role_idRole）等于我的主键来自另一个table称为角色的主键身份角色。我尝试做的是查看您的帐户是否是管理员帐户。因此，如果我是管理员，则 Name = 1 而不是 Name = 0。名称在角色 table 中。

这是我的完整登录代码

`<?php
if(!isset($_SESSION))
{
    session_start();
}
require('dbConnection.php');

    $Password = $_POST['LPassword'];
    $Username = $_POST['LUsername'];

    $dbUser = "SELECT * FROM accaount, role WHERE Username = :username AND Password = :password UNION SELECT * FROM role , accaount WHERE Role_idRole = idRole ";

    $query = $conn->prepare( $dbUser);
    $query->bindParam(":username", $Username);
    $query->bindParam(":password", $Password);
    $query->execute();

    $result = $query->fetch(PDO::FETCH_ASSOC);

    var_dump($result);

    if ($result["Username"] == $Username && $result["Password"] == $Password) {
        if($result['Name'] == 0) {
            $_SESSION['LOGINUsername'] = $Username;
            echo "Member";
        }
        $tpl->assign('USERNAME', $Username);
        if($result['Name'] == 1) {

            $_SESSION['LOGINAdmin'] = $Username;
            echo "Admin";
        }
    }
    else {
        echo "FAIL!";
}`

我知道帐户拼写错误，但这不是错误，它在我的数据库中也是如此。这也是 var dump 显示的内容

数组（大小=8）

'idAccaount' => 整数 2

'Username' => 字符串 'rwere' (长度=5)

'Password' => 字符串 'rwere' (长度=5)

'salt' => 字符串 '380' (长度=3)

'Reset' => 空

'Role_idRole' => 字符串 '45' (长度=2)

'idRole' => 字符串 '40' (长度=2)

'Name' => 整数 1

如您所见，此人必须是会员而不是管理员。如果我们查看 idRole 45，名称 int 必须为 0。

我真的很迷茫

Answer 1

$dbUser = "SELECT accaount.Username, accaount.Password, accaount.Role_idRole, role.Name FROM accaount INNER JOIN role ON accaount.Role_idRole=role.idRole WHERE accaount.Username = :username AND accaount.Password = :password AND Role_idRole = idRole";

外键不等于主键

foreign key is not equal to primary key

php

pdo

login

admin

foreign-keys