SQL 服务器中几个表的一般报告

Question

我需要创建以下 table 架构的一般报告：

我需要为一般报告创建以下 table：

+----------+--------+------------------+-----------------------------+------------------------------+
| Location | Trucks | TotalOfCampaings | CampaingsWithCompleteStatus | CampaingsWithInProcessStatus |
+----------+--------+------------------+-----------------------------+------------------------------+
|          |        |                  |                             |                              |
+----------+--------+------------------+-----------------------------+------------------------------+
|          |        |                  |                             |                              |
+----------+--------+------------------+-----------------------------+------------------------------+

• 位置：至少有一个露营地的卡车的位置。
• 卡车：至少有一个露营地的卡车数量。
• TotalOfCampaings：按地点和卡车分类的露营总数。
• CampaingsWithCompleteStatus: 已完成的活动总数，状态在活动Table.
• CampaingsWithInProcessStatus：处理中状态的活动总数，状态在活动中Table。

Campaing = 下令修理一辆或多辆卡车。

我尝试使用内部联接，但无法获得我对一般报告的期望。

如果有任何问题post，请在评论中帮助我！

Answer 1

SELECT Truck.location as Location,
    COUNT(Truck.vin) as Trucks,
    COUNT(Campaing.campaing_id) as TotalOfCampaings,
    sum(case when Campaing.campaing_estatus = 'Complete' then 1 else 0 end) as CampaingsWithCompleteStatus,
    sum(case when Campaing.campaing_estatus = 'InProcess' then 1 else 0 end) as CampaingsWithInProcessStatus
    FROM CampaingControl
        INNER JOIN Truck ON CampaingControl.vin = Truck.vin
        INNER JOIN Campaing ON CampaingControl.campaing_id = Campaing.campaing_id
    GROUP BY Truck.location;