[英]COUNT in COUNT OVER PARTITION SQL Server
SELECT MobilePhone, COUNT(MobilePhone) OVER(PARTITION BY MobilePhone) AS CountMobilePhone
FROM ES_TABLE
WHERE applic IN ( SELECT appl
FROM Campaign JOIN Client ON Campaign.ClientID = Client.ClientID
WHERE Client.ClientCode = 'OPIS')
这就是我的疑问
输出是
MobilePhone | CountMobilePhone
121928 | 1
912819 | 1
129819 | 3
198219 | 5
918298 | 5
我想通过CountMobilePhone进行分组计数。 就像这样
Count | CountMobilePhone
2 | 1
1 | 3
2 | 5
那可能吗? 我已经尝试了几次但是收到错误
只需对计数本身进行另一次聚合:
SELECT CountMobilePhone, COUNT(*) AS cnt
FROM
(
SELECT COUNT(MobilePhone) OVER(PARTITION BY MobilePhone) AS CountMobilePhone
FROM ES_TABLE
WHERE applic IN (SELECT appl FROM Campaign INNER JOIN Client
ON Campaign.ClientID = Client.ClientID
WHERE Client.ClientCode = 'OPIS')
) t
GROUP BY CountMobilePhone
ORDER BY CountMobilePhone;
试试这个
WITH CTE
AS
(
SELECT
MobilePhone,
COUNT(MobilePhone) OVER(PARTITION BY MobilePhone) AS CountMobilePhone
FROM ES_TABLE
WHERE EXISTS ( SELECT 1
FROM Campaign JOIN Client ON Campaign.ClientID = Client.ClientID
WHERE Client.ClientCode = 'OPIS' AND appl = ES_TABLE.applic)
)
SELECT
[Count] = COUNT(1),
CountMobilePhone
FROM CTE
GROUP BY CountMobilePhone
我还用存在替换了IN以获得更好的性能
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