Question

我是使用coldfusion的新手，我试图弄清楚如何输出平均值的最大数量。现在我可以找到特定部门的平均值，但是我如何从该数据中获取该列表中的最大数量并显示最大平均数？

这是我的代码

<tr>
        <td>#csedept_name#</td>
        <td><div align="right">#totalcount#</div></td>
        <td><div align="right"><cfif totalstars eq ''>&ndash;<cfelse>#totalstars#</cfif></div></td>
        <td><div align="right"><cfif totalstarsgiven eq ''>&ndash;<cfelse>#totalstarsgiven#</cfif></div></td>
        <td><div align="right"><cfif totalstars eq ''>&ndash;<cfelse><cfset avgstars = totalstars / totalcount>#DecimalFormat(avgstars)#</cfif></div></td>
    </tr>
        <cfset countEmployees = countEmployees + totalcount>
        <cfif totalstarsgiven neq ''><cfset countStarsGiven = countStarsGiven + totalstarsgiven></cfif>
        <cfif totalstars neq ''>
            <cfset countStarsReceived = countStarsReceived + totalstars>
            <cfset countStarAverage = countStarAverage + avgstars>
        </cfif>
.....
    <th><div align="right">#countEmployees#</div></th>
    <th><div align="right">#countStarsReceived#</div></th>
    <th><div align="right">#countStarsGiven#</div></th>
    <th><div align="right">#avgstars#</div></th> //here to display the max of the average

以下是查询代码：

<h1><cfoutput>#self#</cfoutput></h1>
    <cfquery datasource="Intranet" name="GetDepartments">
        SELECT * FROM CSEReduxDepts
    </cfquery>

    <cfquery datasource="Intranet" name="GroupStars">
        SELECT execoffice_status, employeedept, COUNT(*) as 'totalstars'
        FROM CSEReduxResponses
        WHERE execoffice_status = 1
        GROUP BY execoffice_status, employeedept
    </cfquery>

    <cfquery dbtype="query" name="GetTotalStars">
        SELECT *
        FROM GroupStars, GetDepartments
        WHERE GroupStars.employeedept = GetDepartments.csedept_id
    </cfquery>

<cfif GetTotalStars.RecordCount gt 0>
    <cfquery datasource="PhoneList" name="GetAllData">
        SELECT dept.csedept_id, COUNT(*) as 'totalcount'
        FROM employee, dept
        WHERE employee.dept_id = dept.dept_id
            AND employee.emp_status = 1
            AND dept.csedept_id is not null
        GROUP BY dept.csedept_id
    </cfquery>

    <cfquery dbtype="query" name="GetDepartmentTotalEmployeesCount">
        SELECT *
        FROM GetAllData, GetDepartments
        WHERE GetAllData.csedept_id = GetDepartments.csedept_id
    </cfquery>



<cfquery name="joinQuery" dbtype="query" >
SELECT *
FROM GetTotalStars
WHERE GetTotalStars.csedept_id = -1
</cfquery>

<cfset QueryAddRow(joinQuery)>

<cfquery name="GetUnion" dbtype="query" >
SELECT *
FROM GetDepartmentTotalEmployeesCount, GetTotalStars
WHERE GetDepartmentTotalEmployeesCount.csedept_id = GetTotalStars.csedept_id

UNION

SELECT GetDepartmentTotalEmployeesCount.*, joinQuery.*
FROM GetDepartmentTotalEmployeesCount, joinQuery
WHERE GetDepartmentTotalEmployeesCount.csedept_id NOT IN (#ValueList(GetTotalStars.csedept_id)#)
</cfquery>

<cfquery datasource="Intranet" name="GroupStarsGiven">
    SELECT execoffice_status, submitterdept, COUNT(*) as 'totalstarsgiven'
    FROM CSEReduxResponses
    WHERE execoffice_status = 1
    GROUP BY execoffice_status, submitterdept
</cfquery>

<cfquery dbtype="query" name="GetTotalStarsGiven">
    SELECT *
    FROM GroupStarsGiven, GetDepartments
    WHERE GroupStarsGiven.submitterdept = GetDepartments.csedept_id
</cfquery>


<cfquery name="joinQuery2" dbtype="query" >
SELECT *
FROM GetTotalStarsGiven
WHERE GetTotalStarsGiven.csedept_id = -1
</cfquery>

<cfset QueryAddRow(joinQuery2)>

<cfquery name="GetUnion2" dbtype="query" >
SELECT *
FROM GetUnion, GetTotalStarsGiven
WHERE GetUnion.csedept_id = GetTotalStarsGiven.csedept_id

UNION

SELECT GetUnion.*, joinQuery2.*
FROM GetUnion, joinQuery2
WHERE GetUnion.csedept_id NOT IN (#ValueList(GetTotalStarsGiven.csedept_id)#)
ORDER BY csedept_name ASC
</cfquery>

Answer 1

一般来说，你可以用sql做到这一点。一般的想法是

select dept, max(number) maxnumber, avg(number) avgnumber
from department join 
(select deptid, number
from department
where clause
) temp on department.deptid = temp.deptid
where clause
group by dept

确保两个where子句相同。

Answer 2

有两种方法可以给这只猫上皮。如果你喜欢猫，我道歉。

首先，你可以像Dan建议的那样去做。很简单，对吧？

其次，我不推荐它超过另一个。

<cfset maxNum = ArrayMax(query['columnname']) />

但这是一个选项

如何找到平均值的最大数量？

2 个答案: