Question

我需要一个清单，该清单在给定年份内购买的产品总额超过给定年份最大金额的80％。我有一个清单，列出所有人员及其每年的总金额，但我不知道该如何过滤。我尝试使用MAX函数并使用最高的SUM，但它不起作用或我做错了。我当前的查询是：

<template>
  <div>
    <div class="wrapper">
      <b-table 
        :data="users">

        <template slot-scope="props">
            <b-table-column label="id" sortable>
              {{props.row.id}}
            </b-table-column>

            <b-table-column field="content" label="content" sortable>
              {{props.content}}
            </b-table-column>
            <b-table-column field="color" label="color" sortable>
              {{props.color}}
            </b-table-column>
        </template>
      </b-table>
    </div>
  </div>
</template>

Answer 1

您可以使用子查询进行过滤

SELECT * FROM (SELECT (p.LastName + ' ' + p.FirstName) AS 'Customer',
s.CustomerID AS 'CustomerId',    YEAR(s.OrderDate) AS Rok, 
SUM(s.SubTotal) AS 'Amount', COUNT(*) AS 'number of purchases'
FROM Sales.SalesOrderHeader s JOIN Sales.Customer c 
ON s.CustomerID = c.CustomerID
JOIN Person.Person p ON c.PersonID = p.BusinessEntityID
GROUP BY s.CustomerID,  YEAR(s.OrderDate), p.LastName, p.FirstName
ORDER BY  s.CustomerID, YEAR(s.OrderDate)) z 
WHERE z.Amount>80;

您需要实现的逻辑可以写在where子句中，这是我使用的示例过滤器

Answer 2

如果我正确理解了您的问题，那应该没问题：

with cte as (
SELECT 
    (p.LastName + ' ' + p.FirstName) AS 'Customer', s.CustomerID AS 'CustomerId',    YEAR(s.OrderDate) AS Rok, SUM(s.SubTotal) AS 'Amount', COUNT(*) AS 'number of purchases'
FROM Sales.SalesOrderHeader s JOIN Sales.Customer c ON s.CustomerID = c.CustomerID
JOIN Person.Person p ON c.PersonID = p.BusinessEntityID
GROUP BY s.CustomerID,  YEAR(s.OrderDate), p.LastName, p.FirstName
), Max80Percent as 
(
    select 
         *
        ,0.8 * MAX(Amount) OVER (PARTITION BY Rok) as Threshold
    from cte
)
select
    *
from Max80Percent
where Amount > Threshold

符合特定条件的人员清单

2 个答案: