Question

关于我的表格简短：我有2个表：content，users

content结构类似于： id |标题| cpc |用户|活性

users is:

id |用户| monetos

提示 - 我想选择contet.* = 1 （n）的content.active行。拥有此数据，SELECT users.monetos WHERE users.id = content.user来自之前的查询。现在，通过最大（n）步骤，我通过 content.cpc 值递减users.monetos值当* users.monetos = 0或小于0时，我想更新content和SET active =＆＃39; 0＆＃39; *

通过语言，我想分享 users.monetos 金额到每个内容条目（每个 content.cpc ）。并且 users.monetos 不再生成当前content 进入不活跃。并且每个 content.user 执行此操作我此时所做的事情如下所示。我现在看起来很糟糕，但我已经不知道该怎么做了。依靠你们。谢谢。

$kak2 = array();
$rs16 = $connector->query("SELECT user FROM content WHERE active='1'");


while($rw16 = $connector->fetchArray($rs16))
{
 $users_ids[] = $rw16['user'];    
}

$user_info2 = $connector->fetchArray("SELECT monetos,id FROM users WHERE id IN (".implode(',',$users_ids).")");

while($user_info = $connector->fetchArray($user_info2))
{
    $current_entry_info2 = $connector->query("SELECT cpc,id FROM content WHERE user='$user_info[id]' ORDER BY date DESC");

    while ($current_entry_info = $connector->fetchArray($current_entry_info2))
    {
        $user_info['monetos']= $user_info['monetos'] - $current_entry_info['cpc'];
        if($user_info['monetos'] = 0)
        {
            $updt = $connector->query("UPDATE content SET active='0' WHERE id='$current_entry_info[id]' LIMIT 1");

        }

    }

}

Answer 1

我想我已经了解了你要做的事情，所以构建了一个小代码片段，我认为应该做你想要做的事情。

请注意，这是未经测试的代码

/** get the cost of all content for all users **/
$query = "select b.id, sum(a.cpc) as cpc from content a
join users b on a.user= b.id
group by b.id where a.active = 1"

/** cycle each user **/
foreach($rows = $connector->fetchArray($query) as $row ) {
    $menotos = $row['cpc'];
    $query = "select id, cpc from content where user={$row['id']}"
    /** cycle each users content **/
    foreach($contents = $connector->fetchArray($query) as $content) {
        $menotos -= $content['cpc'];
        if($menotos <= 0) {
            $disable[] = $content['id'];
        }
    }
    if( isset($disable) ) {
        $connector->query("update content set active=0 where id in(" . implode(',', $disable) . ")";
    }
}

基于另一个更新mysql表。复杂的查询

1 个答案: