Sql 获取函数的最大值

我有以下查询来获取员工的不同功能： 与

对于EmployeeId=54，输出如下：

EmployeeId FunctionId Label                                  CompanyName realOrder Primacy
54         273        Group Chief Executive Officer          C1          1         primary
54         273        Group Chief Executive Officer          C2          2         secondary
54         273        Group Chief Executive Officer          X5          3         secondary
54         897        Group Regional Chief Executive Officer X6          4         secondary
54         897        Group Regional Chief Executive Officer F6          5         secondary
54         39         Director                               VY          6         secondary
54         39         Director                               G7          7         secondary

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我希望每个员工拥有不同的函数ID的数量，并使员工拥有最大数量的函数，即EmployeeId=54 3个不同的函数。

您似乎希望

计数（不同）

：

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您似乎想要

count（distinct）

：

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GROUP BY

，

COUNT（DISTINCT…

，

TOP

和

ORDER BY

？

GROUP BY

，

COUNT（DISTINCT…）

，

TOP

和

ORDER BY

？要获得预期的产出，我用领带移除了顶部（1）并添加了groupby EmployeeId。要获得预期产出，我移除了顶部（1）通过联系并按EmployeeId添加组。

EmployeeId FunctionId Label                                  CompanyName realOrder Primacy
54         273        Group Chief Executive Officer          C1          1         primary
54         273        Group Chief Executive Officer          C2          2         secondary
54         273        Group Chief Executive Officer          X5          3         secondary
54         897        Group Regional Chief Executive Officer X6          4         secondary
54         897        Group Regional Chief Executive Officer F6          5         secondary
54         39         Director                               VY          6         secondary
54         39         Director                               G7          7         secondary

select top (1) with ties EmployeeId, count(distinct FunctionId) as num_functions
from employeeScopeFunctions
group by EmployeeId
order by num_functions desc;