SQL Server查询问题（可能计数？）

我有以下疑问：

SELECT  A.shipment_id
        ,B.box_id
        ,A.shipment_status
FROM shipments A
join boxes B on A.shipment_id = B.shipment_id
where A.shipment_status = 2
Group by B.box_id, A.shipment_id, A.shipment_status

返回的结果集如下所示：

装运id、箱子id、装运状态 101号，boxA，2号 101号，B区，2号 101号，boxC，2号 第二信箱101号102室 第102号信箱，2号 第二栏A1第103号 第二栏第103页

我想返回这样的内容，而不是显示每次装运的箱子总数：

装运标识、箱数、装运状态 101, 3, 2 102, 2, 2 103,2,2

我将如何实现这一点

谢谢

SELECT  A.shipment_id
        ,COUNT(*) AS boxcount
        ,A.shipment_status
FROM shipments A
join boxes B on A.shipment_id = B.shipment_id
where A.shipment_status = 2
Group by A.shipment_id, A.shipment_status

正如您在标题中所说的，只需从组中删除box_id并使用COUNT即可

只需从组中删除框id，然后使用COUNT，如您在标题中所述。

尝试以下操作：

SELECT  A.shipment_id
    , count(1)
    , A.shipment_status
  FROM shipments A
  join boxes B on A.shipment_id = B.shipment_id
 where A.shipment_status = 2
 Group by A.shipment_id, A.shipment_status

试试这个：

SELECT  A.shipment_id
    , count(1)
    , A.shipment_status
  FROM shipments A
  join boxes B on A.shipment_id = B.shipment_id
 where A.shipment_status = 2
 Group by A.shipment_id, A.shipment_status