Question

Ive got query like this:

select distinct UserID, Count(UserId) as MyNumber from  dbo.User2User group by UserId

now I would like extend this query to get MIN, MAX and AVG of MyNumber

no idea how to get to this value from another select or sth …

thanks for help

Answer 1

You can use your own query as a subquery :

SELECT MIN(MyNumber) AS minNumber, MAX(MyNumber) AS maxNumber, AVG(myNumber) AS avgNumber
FROM (SELECT UserID, COUNT(UserID) AS MyNumber
      FROM dbo.User2User
      GROUP BY UserID) TMP;

Note that the DISTINCT keyword isn’t necessary : GROUP BY already selects distinct UserID.