我有一个查询，其中我需要返回价格的平均值和数量的总和，并将结果按年和月分组。这是我的查询的开始，只是不知道如何获得我需要的结果。
SELECT asin,
price,
qtyTotal,
qtyReserved,
qtyWarehouse,
qtyFulfillable,
qtyUnsellable,
perUnitVolume,
YEAR(reportDate),
MONTH(reportDate),
DAY(reportDate)
FROM Table
WHERE name = 'XXXXXXX'
ORDER BY reportDate ASC
id | name | price | qty | unitVol | year | month | day | reportDate
---|-----------------------------------------------------------------------------
1 | XXXXXXX | 20.18 | 3 | 0.17 | 2014 | 8 | 23 | 2014-8-23
2 | XXXXXXX | 20.19 | 3 | 0.18 | 2015 | 11 | 10 | 2014-8-23
3 | XXXXXXX | 20.21 | 3 | 0.19 | 2015 | 11 | 11 | 2014-8-23
4 | XXXXXXX | 20.22 | 3 | 0.20 | 2015 | 11 | 12 | 2014-8-23
5 | XXXXXXX | 20.43 | 3 | 0.11 | 2015 | 12 | 1 | 2014-8-23
6 | XXXXXXX | 23.34 | 3 | 0.13 | 2015 | 12 | 2 | 2014-8-23
7 | XXXXXXX | 25.54 | 3 | 0.19 | 2015 | 12 | 3 | 2014-8-23
这是我最终需要的结果：
id | name | price | qty | unitVol | year | month
---|------------------------------------------------------------------
1 | XXXXXXX | 20.18 | 3 | 0.17 | 2014 | 8
2 | XXXXXXX | 20.21 | 9 | 0.19 | 2015 | 11
3 | XXXXXXX | 23.10 | 9 | 0.14 | 2015 | 12
价格是同一年和月的每条记录的平均价格，例如记录ID＃2为：（20.19 + 20.21 + 20.22）/ 3 = 20.21
qty是年和月记录的总和，例如记录ID＃2是：3 + 3 + 3 = 9
感谢您的帮助。
答案 0 :(得分：0)
$('#example').DataTable({
dom : 'Bfrtip',
buttons : [ 'copy', 'csv', 'pdf', 'print',{
extend: 'excel',
text: 'Export To Excel'
} ]
});
<table id="example" class="display" cellspacing="0" width="100%">
<thead>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</thead>
<tfoot>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</tfoot>
<tbody>
<tr>
<td>Tiger Nixon</td>
<td>System Architect</td>
<td>Edinburgh</td>
<td>61</td>
<td>2011/04/25</td>
<td>$320,800</td>
</tr>
<tr>
<td>Garrett Winters</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>63</td>
<td>2011/07/25</td>
<td>$170,750</td>
</tr>
<tr>
<td>Ashton Cox</td>
<td>Junior Technical Author</td>
<td>San Francisco</td>
<td>66</td>
<td>2009/01/12</td>
<td>$86,000</td>
</tr>
<tr>
<td>Cedric Kelly</td>
<td>Senior Javascript Developer</td>
<td>Edinburgh</td>
<td>22</td>
<td>2012/03/29</td>
<td>$433,060</td>
</tr>
<tr>
<td>Airi Satou</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>33</td>
<td>2008/11/28</td>
<td>$162,700</td>
</tr>
<tr>
<td>Brielle Williamson</td>
<td>Integration Specialist</td>
<td>New York</td>
<td>61</td>
<td>2012/12/02</td>
<td>$372,000</td>
</tr>
<tr>
<td>Herrod Chandler</td>
<td>Sales Assistant</td>
<td>San Francisco</td>
<td>59</td>
<td>2012/08/06</td>
<td>$137,500</td>
</tr>
<tr>
<td>Rhona Davidson</td>
<td>Integration Specialist</td>
<td>Tokyo</td>
<td>55</td>
<td>2010/10/14</td>
<td>$327,900</td>
</tr>
<tr>
<td>Colleen Hurst</td>
<td>Javascript Developer</td>
<td>San Francisco</td>
<td>39</td>
<td>2009/09/15</td>
<td>$205,500</td>
</tr>
<tr>
<td>Sonya Frost</td>
<td>Software Engineer</td>
<td>Edinburgh</td>
<td>23</td>
<td>2008/12/13</td>
<td>$103,600</td>
</tr>
<tr>
<td>Jena Gaines</td>
<td>Office Manager</td>
<td>London</td>
<td>30</td>
<td>2008/12/19</td>
<td>$90,560</td>
</tr>
<tr>
<td>Quinn Flynn</td>
<td>Support Lead</td>
<td>Edinburgh</td>
<td>22</td>
<td>2013/03/03</td>
<td>$342,000</td>
</tr>
<tr>
<td>Charde Marshall</td>
<td>Regional Director</td>
<td>San Francisco</td>
<td>36</td>
<td>2008/10/16</td>
<td>$470,600</td>
</tr>
</tbody>
</table>