sql,sql-server,date,select,min , SQL Server - select min date and id from foreign key
SQL Server - select min date and id from foreign key
These are my tables:
id_user name email last_access id_company
1 jhonatan [email protected] 2014-12-15 1
2 cesar [email protected] 2014-12-31 1
3 john [email protected] 2015-01-09 2
4 steven [email protected] 2015-01-02 2
5 greg [email protected] 2014-12-07 1
6 kyle [email protected] 2014-11-20 1
I need to know, what are the users which has the MIN last_access per company (just one). It could be like this:
id_user name last_access company
6 kyle 2014-11-20 Facebook
4 steven 2015-01-02 Appslovers
Is it possible ?
FROM (SELECT id_user,
Row_number()OVER(partition BY company ORDER BY last_access) rn
FROM users u
JOIN company c
ON u.id_company = c.id_company) a
WHERE rn = 1
join both the tables find the min
last_access date per
company then join the result back to the
users table to get the result
FROM users u
FROM users u
JOIN company c
ON u.id_company = c.id_company
GROUP BY u.id_company,
ON a.id_company = u.id_company
AND u.last_access = a.last_access
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