Subject Re: [ib-support] Subtract two TimeStamp-Fields
Author Svein Erling Tysvær
if I remember correctly TimeStamp in IB6.0 is the equivalent of Date in
IB5.6 - and that would give you the difference in days, not in seconds. Try
something like

"Select (end-start)*24*60*60 from table" to get the number of seconds and
worry about the casting once you get the calculation to work.