Question

下面的代码按照“votes_up”的降序排列MySQL数据库中的前25个条目（变量“site”）。它很棒。每行都有一个名为“createddatetime”的列，具有以下结构：

输入：timestamp 默认值：CURRENT_TIMESTAMP

如何更改以下代码以显示最近添加的25个条目？另外，我怎么能显示这样的时间戳：“格林威治标准时间2009年11月1日下午3:45”

提前致谢，

约翰

   mysql_connect("mysqlv8", "username", "password") or die(mysql_error());
    mysql_select_db("sitefeather") or die(mysql_error());

    $result = mysql_query("SHOW TABLES");
    $tables = array();
    while ($row = mysql_fetch_assoc($result)) {
        $tables[] = '`'.$row["Tables_in_sitefeather"].'`';

    }

    //$subQuery = "SELECT site, votes_up FROM ".implode(" UNION ALL SELECT site, votes_up FROM ",$tables);

    $subQueryParts = array();
    foreach($tables as $table)
        $subQueryParts[] = "SELECT site, votes_up FROM $table WHERE LENGTH(site)";
    $subQuery = implode(" UNION ALL ", $subQueryParts);

    // Create one query that gets the data you need
    $sqlStr = "SELECT site, sum(votes_up) sumVotesUp
                FROM (
                ".$subQuery." ) subQuery
               GROUP BY site ORDER BY sum(votes_up) DESC LIMIT 25";
    $result = mysql_query($sqlStr);

    $arr = array(); 
    echo "<table class=\"samples2\">";
    while ($row = mysql_fetch_assoc($result)) { 
        echo '<tr>';
        echo '<td class="sitename2"><a href="sitelookup3.php?entry='.urlencode($row["site"]).'&searching=yes&search=search">'.$row["site"].'</a></td>';
        echo '<td>'.$row["sumVotesUp"].'</td>';
        echo '</tr>';
    } 

    echo "</table>";

Answer 1

试试这个：

... GROUP BY site ORDER BY sum(votes_up) DESC, createddatetime DESC LIMIT 25

按时间戳显示前25个表行

1 个答案: