Sql 与CTE一起使用时，行号已断开

这是我的查询CTE内部的SQL工作正常，我只想得到每个城市名称的前20行：

WITH taniCte
AS (
    SELECT sl.Adi AS [CityName],
        mt.ICD10Kodu AS [Tanı],
        count(mt.ICD10Kodu) AS sayi,
        RowNum = ROW_NUMBER() OVER (
            ORDER BY sl.Adi
            )
    FROM Muayene.Muayene mm WITH (NOLOCK)
    INNER JOIN Muayene.Tani mt WITH (NOLOCK) ON mm.ID = mt.MuayeneId
    INNER JOIN Ortak.Kurum ok WITH (NOLOCK) ON mm.CreatedKurumKodu = ok.KurumKodu
    INNER JOIN Skrs.Il sl WITH (NOLOCK) ON ok.IlKodu = sl.Kodu
    GROUP BY sl.Adi,
        mt.ICD10Kodu
    ) --order by [CityName], sayi desc // commentewhen its moved inside cte
SELECT [CityName],
    [Tanı],
    sayi,
    RowNum
FROM taniCte
WHERE RowNum <= 20
ORDER BY [CityName],
    sayi DESC

尽管主查询工作正常，但上面的查询返回错误的行

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我在互联网上找不到任何解决方案

如果您需要每个城市20行，那么您在cte中的行数OVER子句应该是

with taniCte as
(
  select sl.Adi as [CityName]
       , mt.ICD10Kodu as [Tanı]
       , count(mt.ICD10Kodu) as sayi
       , RowNum = ROW_NUMBER()OVER(partition By sl.Adi order by count(mt.ICD10Kodu)) -- this change in over clause
  from Muayene.Muayene mm with(nolock)
       join Muayene.Tani mt with(nolock) on mm.ID = mt.MuayeneId
       join Ortak.Kurum ok with(nolock) on mm.CreatedKurumKodu = ok.KurumKodu
       join Skrs.Il sl with(nolock) on ok.IlKodu = sl.Kodu
   group by sl.Adi, mt.ICD10Kodu 
   --order by [CityName], sayi desc // commentewhen its moved inside cte
)
select [CityName], [Tanı],sayi, RowNum 
from taniCte 
where RowNum <= 20 
order by [CityName], sayi desc

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这个查询看起来不错。你能提供样品数据和预期结果吗？有什么问题吗？RowNum的目的是什么？为什么要使用nolock？你知道这意味着什么，对吧？老兄，上帝保佑你和你的家人，保佑你所爱的一切。谢谢