以百分比形式返回聚合函数

Question

我目前正试图将一系列聚合函数作为百分比返回。有人对如何做有任何建议吗？

以下是SQL。

SELECT
 et.Term
,count(et.employeeid) as 'Total Enrolled'
,sum(et.retained) as 'Retained'
,sum(et.EnrollButSwitchedDept) as 'EnrollButSwitched'
,sum(et.NotEnrolled) as 'Not Enrolled'
,sum(et.Graduated) as 'Graduated'
--,CAST(sum(et.retained))*100.0 as 'Retained %'
,CAST (((sum(et.retained))*100.0)/(((count (et.EmployeeID)))) as Numeric(10,2) as 'Retained %'

FROM #EnrollmentTypes et

WHERE 1 = 1

GROUP BY et.Term

截至目前，我收到了以下错误。

Incorrect syntax near 'CAST', expected 'AS'.

Answer 1

如果你摆脱了一些不必要的括号，那么将更容易看到剩下的应该去哪里。应该有效的更正查询：

Swift.String