《MYSQL數據庫以數據庫字段分組顯示數據的sql語句(詳細介紹)》要點：
本文介紹了MYSQL數據庫以數據庫字段分組顯示數據的sql語句(詳細介紹)，希望對您有用。如果有疑問，可以聯系我們。

<?php
$dsn = "mysql:host=localhost;dbname=group";
$db = new PDO($dsn, 'root', '');
$db->exec('set names utf8');

$sql = "select conf_id from? `group` group by conf_id";
//$pre = $db->prepare($sql);
//$result_arr = array();
$pre = $db->query($sql);
$result_arr = $pre->fetchAll(PDO::FETCH_ASSOC);MYSQL必讀

//print_r ($result_arr);
foreach ($result_arr as $v)
{
?echo $v[conf_id]."<br>";
?$vv = $v[conf_id];
?$re = array();
?$sql1 = "select * from `group` where conf_id = '$v[conf_id]' order by time";
?$sql2 = "select * from `group` where conf_id = '$v[conf_id]' order by time DESC";
?$rs1 = $db->query($sql1);
?$rs2 = $db->query($sql2);
?$re1[$vv] = $rs1->fetchAll(PDO::FETCH_ASSOC);
?$re2[$vv] = $rs2->fetchAll(PDO::FETCH_ASSOC);
?print_r($re1[$vv][0]);
?print_r($re2[$vv][0]);
}
MYSQL必讀

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