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SQL query for time from integer

SQL query for time from integer

SQL query for time from integer

I have a table that has users, logon time, logoff time.

232Y    181442    194700
232Y    181442    195513
232Y    202313    203313
232Y    202313    204313
232Y    202313    205313
232Y    202313    210313
232Y    202313    210845

the user above logged in twice that day.
the system logs them out every 10 min and then starts another 10 min time frame.

Anyway I need to write a SQL statement that will tell me how long this user was logged into the system from the firt login to the last logout for that login time.
and then again for the second login time to the last logout time for that loging time as well.

I am stumped.   any ideas?   the login time and the logout time are both integers.    
Please help me out.


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