好的,所以我遇到了问题。我似乎无法在PHP中成功回显SQL Count。
SQL:
SELECT TableA.C, COUNT(*) FROM TableA JOIN TableB ON (TableA.C = TableB.D)
WHERE TableB.E = 1 GROUP BY TableA.C ORDER BY COUNT(*) DESC
PHP:
$result= mysql_query("SELECT TableA.C, COUNT(*) FROM TableA JOIN TableB ON (TableA.C = TableB.D)
WHERE TableB.E = 1 GROUP BY TableA.C ORDER BY COUNT(*) DESC");
while($rows = mysql_fetch_array($result))
{
echo $rows['Count']."</br>";
}
$rows = mysql_fetch_array($result);
{
echo $rows['Count'];
}
我尝试了两种我在网上找到的不同的东西(上面)。我甚至尝试使用“mysql_fetch_array($ result,MYSQL_ASSOC)”而不是mysql_fetch_array($ result)。
每次都会收到相同的错误消息:
Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in
/home/semsemx1/public_html/x/xx.php
此外,我已尝试将其设为“$rows['COUNT']
”,但这不起作用。
任何帮助都将不胜感激。
答案 0 :(得分:6)
您只需要将您的点数计算为ALIAS
SELECT TableA.C, COUNT(*) as total
然后你可以用
来调用它echo $rows['total']
答案 1 :(得分:3)
使用“As”关键字
SELECT TableA.C, COUNT(*) as count FROM TableA JOIN TableB ON (TableA.C = TableB.D) WHERE TableB.E = 1 GROUP BY TableA.C ORDER BY COUNT(*) DESC
echo $rows['count '];