Question

I have multiple websites run on single database.

My question related table Structure is like here:

USER
    - UserID
WEBSITE
    - WebsiteID
        - WebsiteName
LOGINRECORD
    - UserID
    - WebsiteID
    - LoginDate

I want to Count Number of unique users which loggedin more than ones by webssite.

Like

Website          NumberofUserLoggedinMorethanOnce 
abc.com                     15 
def.com                     25

Answer 1

EDIT: I misunderstood the question. This should be it:

SELECT WEBSITE.WebsiteName, count(*)
FROM WEBSITE 
INNER JOIN (
SELECT UserID, WebsiteID, count(*) FROM LOGINRECORD
GROUP BY UserID, WebsiteID
HAVING count(*) > 1) AS T1 ON t1.WebsiteID = WEBSITE.WebsiteID
GROUP BY WEBSITE.WebsiteName