第一次发帖。我需要计算每个员工的生产力，基本上除以“可计费小时数与总小时数”的工作时间。但是，我的数据透视表中的生产力列只给了我空值，我相信这是因为我如何计算计费小时数和总工作时间（打卡出来）。
this is how my google sheet looks
<table>
<thead>
<tr>
<th>Clocked time </th>
<th>Date</th>
<th>End time</th>
<th>Start Time</th>
<th>Work Type</th>
</tr>
</thead>
<tbody>
<tr>
<td>10.75</td>
<td>09/01/20</td>
<td>5:15pm</td>
<td>6:30pm</td>
<td>Clock in/out</td>
<td></td>
</tr>
<tr>
<td>8</td>
<td>09/01/20</td>
<td>3:00pm</td>
<td>7:00am</td>
<td>Work</td>
</tr>
<tr>
<td>7.75</td>
<td>09/01/20</td>
<td>3:15pm</td>
<td>7:30am</td>
<td>Clock in/out</td>
</tr>
<tr>
<td>11.25</td>
<td>09/01/20</td>
<td>6:15pm</td>
<td>7:00am</td>
<td>Clock in/out</td>
</tr>
<tr>
<td>10.75</td>
<td>09/01/20</td>
<td>5:15pm</td>
<td>6:30pm</td>
<td>Clock in/out</td>
</tr>
<tr>
<td>10.75</td>
<td>09/01/20</td>
<td>5:15pm</td>
<td>6:30pm</td>
<td>Clock in/out</td>
</tr>
<tr>
<td>10.75</td>
<td>09/01/20</td>
<td>5:15pm</td>
<td>6:30pm</td>
<td>Work</td>
</tr>
<tr>
<td>10.75</td>
<td>09/01/20</td>
<td>5:15pm</td>
<td>6:30pm</td>
<td>Work</td>
</tr>
<tr>
<td>10.75</td>
<td>09/01/20</td>
<td>5:15pm</td>
<td>6:30pm</td>
<td>Clock in/out</td>
</tr>
</tbody>
</table>this is how I calculated billable hrs
case
WHEN Work Type = "Work" THEN Clocked Time ELSE Null
END
this is how I calculated clock in out hours
case
WHEN Work Type = "Clock In/Out" THEN Clocked Time ELSE Null
END
This is how my data studio report looks
然后我在我的数据透视表中创建了一个简单的公式来划分计费时间与时钟输出时间，结果在所有单元格中都为空。
<块引用>计费时间/打卡时间
我读了几个小时却找不到解决方案，我做错了什么？
谢谢
