How to find last login date of a sql login?

Question

i want to disable the SQL Logins which are not logged in last 15 days. (I schedule a job every night to check and disable)
For this 
i want to find  last login date of all sql logins in an instance if the login didn't log in with in 15 days i want to disable them.
In SYS.SYSLOGINS table we can see all the logins and 'isntname' tells us if it is SQL login or windows login. 
but where to find the last login date of SQL log in ?
Can any one help me?

Answer 1

Hi HYDBA,
If you use SQL Server 2005 or later, you can only get the current logon data using
DMV likes:
select
max
(login_time)as
last_login_time, login_name
from
sys.dm_exec_sessions
group
by login_name;
Related to your question there are two options:
One is logon trigger,
which is used to get current login time and login name comparing with the data from
sys.dm_exec_sessions. If the current login time comparing with last login time is larger than 15 days, then prevent the current login.   
Another one is to schedule a job, which is used to disable logon who’s current login time
comparing with last login time is larger than 15 days.
Hope it’s helpful for you.
Regards, Amber zhang