Question

我在PHP中使用MySQL查询，但它在PHP中不起作用。但是当我在MySQL中运行它时，它运行良好。

在这个查询中，我用另一个查询的结果减去sum（EventData.odometerKM）的结果。

虽然我没有使用限制，但它返回“子查询返回超过1行” 我希望所有人都不受限制。

此处它以限制1返回：

Array
(
    [0] => 
    [licensePlate] => 
    [1] => 15745455.854492635
    [sum(EventData.odometerKM) - (SELECT  sum(EventData.odometerKM) from Device LEFT JOIN EventData on Device.deviceID=EventData.deviceID where DATE_FORMAT(FROM_UNIXTIME(`timestamp`), '%d-%m-%Y') = '27-06-2017' AND Device.isActive=1 group by Device.licensePlat] => 15745455.854492635
)

代码：

$sqll = "SELECT  Device.licensePlate, sum(EventData.odometerKM) - (SELECT  sum(EventData.odometerKM) from Device LEFT JOIN EventData on Device.deviceID=EventData.deviceID where DATE_FORMAT(FROM_UNIXTIME(`timestamp`), '%d-%m-%Y') = '27-06-2017' AND Device.isActive=1 group by Device.licensePlate ) from Device LEFT JOIN EventData on Device.deviceID=EventData.deviceID where DATE_FORMAT(FROM_UNIXTIME(`timestamp`), '%d-%m-%Y') = '28-06-2017' AND Device.isActive=1 group by Device.licensePlate ";

$result2 = mysqli_query($conn, $sqll)or die("MySQL error: " . mysqli_error($conn) . "<hr>\nQuery: $query");;
$count=1;
while ($rows = mysqli_fetch_array($result2)){
     '.$rows['sum(EventData.odometerKM)'].'<br>';
    //$count++;
    echo '<pre>';
    print_r($rows);

}

查询直接在MySQL中工作，但不在PHP中查询

0 个答案: