troubleshooting Question

SQL Time In and Time Left - How Many Are Here?

Avatar of dastaub
dastaubFlag for United States of America asked on
Microsoft SQL Server 2005Microsoft SQL Server 2008SSRS
13 Comments2 Solutions546 ViewsLast Modified:
I have rows with a Time Stamp of when someone arrives and a TimeStamp of when the same person leaves.  Each person is identified when they arrive and leave, it is not a simple count of INs and OUTs  Each person's TimeIn and TimeOut are recorded in the same row.
I need an idea for a query that will tell me the count of people who are IN at any point in time?
I can tell you how many people arrived between time A and B or how many left between time A and B, but I'm not clear on calculating how many are present at time A or present at time B?
Ephraim Wangoya
Software Engineer

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