Question

我有这个php脚本，每个p只显示一个用户。account_id，但不是那样的。

如果用户在同一帐户中有另外两个用户，则也会显示该用户。我无法解决任何问题。

$groupConfig = [
'Administrator' => ['groupId' => 5, 'accountType' => [5]],
'Community Manager' => ['groupId' => 4, 'accountType' => [4]],
'Gamemaster' => ['groupId' => 3, 'accountType' => [4]],
'Tutor' => ['groupId' => 1, 'accountType' => [2, 3]],
];

foreach ($groupConfig as $groupTitle => $group) {
    $k = $SQL->query('SELECT 
    `p`.`name`, 
        `p`.`lastlogin`, 
            `p`.`id`, 
                `p`.`group_id`, 
                    `a`.`type` 
                FROM 
                    `players` AS `p` 
                LEFT JOIN `accounts` AS `a` 
                    ON `a`.`id` = `p`.`account_id` 
                WHERE `a`.`type` 
                    IN (' . implode(',', $group['accountType']) . ') 
                        AND group_id = ' . $group['groupId'] . '
                    ORDER BY 
                `group_id` 
            DESC')->fetchAll();
    }

Answer 1

您可以尝试使用GROUP BY子句按相同的值（p.account_id）进行分组。

为什么您的数据允许每个帐户有多个用户？

$groupConfig = [
'Administrator' => ['groupId' => 5, 'accountType' => [5]],
'Community Manager' => ['groupId' => 4, 'accountType' => [4]],
'Gamemaster' => ['groupId' => 3, 'accountType' => [4]],
'Tutor' => ['groupId' => 1, 'accountType' => [2, 3]],
];

foreach ($groupConfig as $groupTitle => $group) {
    $k = $SQL->query('SELECT 
    `p`.`name`, 
        `p`.`lastlogin`, 
            `p`.`id`, 
                `p`.`group_id`, 
                    `a`.`type` 
                FROM 
                    `players` AS `p` 
                LEFT JOIN `accounts` AS `a` 
                    ON `a`.`id` = `p`.`account_id` 
                WHERE `a`.`type` 
                    IN (' . implode(',', $group['accountType']) . ') 
                        AND group_id = ' . $group['groupId'] . '
                    GROUP BY `p`.`account_id`
                    ORDER BY 
                `group_id` 
            DESC')->fetchAll();
    }

Answer 2

将fetchAll更改为fetch，或添加＆＃34; LIMIT＆＃34;到SQL查询。你得到多个结果是绝对正常的。您不是要从表帐户查询，而是查询表格玩家。因此，您的结果将包含与帐户有玩家一样多的行。最好的方法是查询正确的表，但您也可以使用前面提到的修复程序解决它。

每个帐户只能选择一个用户

2 个答案: