怎么才能把数据库的中的数据以一个条件查询出来,然后统计里面的另一个字段中存的数据累加一共是多少.
有这样一个要求,就是我要先把润安大厦显示出来,然后再统计润安大厦 一共领取了多少台电脑
回复讨论(解决方案)
读取时自己累加就是了
读取时自己累加就是了
麻烦您说的具体点...谢谢了!
$sql="select sum(number) as total where where area='润安大厦'"; $result=mysql_query($sql); while($row=mysql_fetch_array($result)){ $total=$row['total']; } echo "润安大厦:".$total."台";
还要怎么具体呢?
有数组
array(
array('a', 1),
array('a', 2),
array('b', 1),
array('c', 1),
array('a', 1),
)
现要求按第一列分别对第二列求和,你说该如何做?
还要怎么具体呢?
有数组
array(
array('a', 1),
array('a', 2),
array('b', 1),
array('c', 1),
array('a', 1),
)
现要求按第一列分别对第二列求和,你说该如何做?
$query = "select * from tbl_apply_register where area = '润安大厦'"; $sql = mysql_query($query); while($row = mysql_fetch_array($sql)){ $tmp[] = $row[number]; } echo array_sum($tmp);
$sql="select sum(number) as total where where area='润安大厦'"; $result=mysql_query($sql); while($row=mysql_fetch_array($result)){ $total=$row['total']; } echo "润安大厦:".$total."台";
$query = "select * from tbl_apply_register where area = '润安大厦'"; $sql = mysql_query($query); while($row = mysql_fetch_array($sql)){ $tmp[] = $row[number]; } echo array_sum($tmp);
$sql="select sum(number) as total where where area='润安大厦'";
不好意思,多了个where
你的方法跟我的本质相同,不过我的是在数据库中直接算出来。

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