selecting rows which have occurred more than three times

Question

I have a table active_users and from that i want to select the rows where user_id has occurred more than 2 times and notified = 0 .Want single result only

Answer 1

Just count and group by user_id (and any other optional properties), together with having clause:

SELECT
    user_id,
    mobile,
    max(last_seen) AS last_seen,
    notified,
    count(user_id) AS number_of_records
FROM
    active_users
WHERE
    notified = 0
GROUP BY
    user_id,
    mobile,
    notified
HAVING
    count(user_id) > 2

This will give you all users occurred 3 times and more into the table.