sql - 没有为 [table] 的列 [x] 指定列且列名无效

Question

运行以下查询时，我得到了所需的结果，但是当我将鼠标悬停在表别名上并且将鼠标悬停在 AVG 函数中的“总计”上时，SSMS 指示“没有为 'MonthlyTotals' 的第 2 列指定任何列，它指定它是无效的列名。

SELECT AVG(Totals) as 'MonthlyAvg' from
(
SELECT [DATE], SUM(Assets) as 'Totals'
FROM Assets inner join Funds on Assets.FundCode = Funds.FundCode
WHERE FeeGroupID = 17
    and (([Date] >= '1/1/2013') 
    AND ([Date] <= '4/1/2013')) 
    and ((Funds.EndDt >= '4/1/2013') OR (Funds.EndDt is null))
GROUP BY [DATE]
) as MonthlyTotals

Answer 1

完全猜测，但试试这个替代语法。

SELECT [MonthlyAvg] = AVG(Totals) from
(
SELECT [DateOf] = [DATE] , [Totals] = SUM(Assets) 
FROM Assets inner join Funds on Assets.FundCode = Funds.FundCode
WHERE FeeGroupID = 17
    and (([Date] >= '1/1/2013') 
    AND ([Date] <= '4/1/2013')) 
    and ((Funds.EndDt >= '4/1/2013') OR (Funds.EndDt is null))
GROUP BY [DATE]
) as MonthlyTotals