Question

假设我有

SalesManagerId, SaleAmount, ProductId

我想总结每个SaleAmount SalesManagerId，ProductId）并抓住ProductId最多sum(SaleAmount)。

这可以在一个查询中使用吗？

示例：

1, 100, 1
1, 200, 1
1, 600, 1
1, 400, 2
2, 100, 3
3, 100, 4
3, 100, 4
2, 500, 6
3, 100, 5

结果：

1, 900, 1
2, 500, 6
3, 200, 4

Answer 1

如果您有可用的分析功能，则可以使用RANK()

类似的东西：

SELECT SalesManagerId, ProductId, Total
FROM (
  SELECT SalesManagerId,
         ProductId, 
         SUM(SaleAmount) as Total,
         RANK() OVER(PARTITION BY SalesManagerId 
                     ORDER BY SUM(SaleAmount) DESC) as R
  FROM <Table name>
  GROUP BY SalesManagerId, ProductId) as InnerQuery
WHERE InnerQuery.R = 1

Answer 2

至少假设SQL 2005，您可以使用CTE：

;with cteTotalSales as (
    select SalesManagerId, ProductId, SUM(SaleAmount) as TotalSales
        from YourSalesTable
        group by SalesManagerId, ProductId
),
cteMaxSales as (
    select SalesManagerId, MAX(TotalSales) as MaxSale
        from cteTotalSales
        group by SalesManagerId
)
select ts.SalesManagerId, ms.MaxSale, ts.ProductId
    from cteMaxSales ms
        inner join cteTotalSales ts
            on ms.SalesManagerId = ts.SalesManagerId
                and ms.MaxSale = ts.TotalSales
    order by ts.SalesManagerId

Answer 3

使用GROUP BY和ORDER：

SELECT SalesManagerId, SUM(SaleAmount) AS SaleSum, ProductId FROM [table-name] GROUP BY SalesManagerId, ProductId ORDER BY SaleSum DESC

Answer 4

非常好的问题！

试试这个：

SELECT MAX(SUM(SaleAmount)), ProductId GROUP BY SalesManagerId, ProductId;

或者

SELECT SUM(SaleAmount) as Sum, ProductId GROUP BY SalesManagerId, ProductId ORDER BY Sum DESC;

您不能只删除总和列，只能获取产品ID

根据另一列的总和选择列

4 个答案: