Question

我有以下表格及相关栏目。

每位员工都可以属于一个或多个商店。每个商店都在一个组中。

员工

EmployeeId Number
Certified DateTime

EmployeeStores

EmployeeStoreId Number
EmployeeId Number
StoreId Number

店铺

StoreId Number
GroupId Number

我需要生成一个显示Certified的百分比的查询按组在Employees表中完成的字段。所以，假设A组， B组和C组，结果集应该有：

Group A 13
Group B 42
Group C 21
Other 24

如何在Access中完成？

Answer 1

创建此查询，验证它是否返回正确的值，并将其另存为qryGroupCert_base。

SELECT
    d.GroupId,
    Sum(d.cert_complete) AS SumOfcert_complete,
    Count(d.cert_complete) AS CountOfcert_complete
FROM
    [SELECT DISTINCT
        s.GroupId,
        e.EmployeeID,
        IIf(e.Certified Is Null,0,1) AS cert_complete
    FROM
        (Stores AS s
        INNER JOIN EmployeeStores AS es
        ON s.StoreId = es.StoreId)
        INNER JOIN Employees AS e
        ON es.EmployeeId = e.EmployeeID
    ]. AS d
GROUP BY d.GroupId;

然后构建一个使用qryGroupCert_base作为源的新查询。

SELECT
    q.GroupId,
    (SumOfcert_complete/CountOfcert_complete) * 100 AS percent_certified
FROM
    qryGroupCert_base AS q;

获取具有日期的行的百分比 - 分组

1 个答案: