Question

我具有以下表格结构，我需要根据购买的总数量以递减的方式为每个客户分配一个数字：

customerid  order_date  item    quantity    price

10330       2016-06-30  Skateboard  1       28.00
10101       2016-06-30  Raft        1       58.00
10298       2016-07-01  Skateboard  1       33.00
10101       2016-07-01  Snow Shoes  4       125.00
10299       2016-07-06  Parachute   1       1250.00
10339       2016-07-27  Umbrella    1       4.500
10449       2016-08-13  Bicycle     1       180.790
10439       2016-08-14  Ski Poles   2       25.500

到目前为止，我一直在尝试以下查询，但看起来仍然不正确：

SELECT *, ROW_NUMBER() OVER(PARTITION BY customerid ORDER BY sum(quantity) DESC) FROM IMP_MyTablee
GROUP BY customerid, order_date, item, quantity, price

有人可以给我小费吗？谢谢

所需的输出

无论有多少条记录，购买的总数量以及排名如何，我都需要查看一次CustomerID：

customerid  order_date  item    quantity    price    rank

10330       2016-06-30  Skateboard  5       28.00      1
10101       2016-06-30  Raft        3       58.00      3
10298       2016-07-01  Skateboard  4       33.00      2

Answer 1

尝试一下。先组然后排名

with A as (
    select * from 
        ( values 
            (10330, '2016-06-30', 'Skateboard', 1, 28.00),
            (10101, '2016-06-30', 'Raft'      , 1, 58.00),
            (10298, '2016-07-01', 'Skateboard', 1, 33.00),
            (10101, '2016-07-01', 'Snow Shoes', 4, 125.00),
            (10299, '2016-07-06', 'Parachute' , 1, 1250.00),
            (10339, '2016-07-27', 'Umbrella'  , 1, 4.500),
            (10449, '2016-08-13', 'Bicycle'   , 1, 180.790),
            (10439, '2016-08-14', 'Ski Poles' , 2, 25.500)
        ) as T(customerid,  order_date,  item,   quantity,    price)
)
, B as (
    select 
        customerid,
        item,
        sum(quantity) as total,
        price
    from
        A
    group by
        customerid, item, price
)
select top(3) *, ROW_NUMBER() over (order by total desc) from B order by total desc

Answer 2

您的规格要求如下查询：

SELECT customerid, 
    SUM(Quantity) As Qty
    ROW_NUMBER() OVER (GROUP BY customerid ORDER BY Sum(Quantity) desc) As Rank
FROM IMP_MyTablee
GROUP BY customerid

如果还需要详细信息，则需要指定所需的详细信息-SUM（价格*数量）或MIN（订购日期），或其他。...

SQL-按购买数量的DESC顺序为每行分配编号

2 个答案: