sql - SQL Server 分区计数中的计数

Question

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')

这就是我的查询

输出为

MobilePhone  | CountMobilePhone
121928       |    1
912819       |    1
129819       |    3
198219       |    5
918298       |    5

我想按 CountMobilePhone 分组进行计数。就这样

Count   | CountMobilePhone
2       |    1
1       |    3
2       |    5

这可能吗？我已经尝试了几次但出现错误

Answer 1

只需对计数本身进行另一个聚合即可:

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;