Brian Abbott wrote: > I have a log table where timestamped transactions are recorded. > Typically they occur every 3 - 5 minutes (never less than every 2 > minutes) and there is sequence of 4 or 5 spanning typically 4 - 10 > seconds like this: > > 05/10/07 12:49:54 > 05/10/07 12:49:56 > 05/10/07 12:49:59 > 05/10/07 12:50:00 > > I need a neat SQL select (assuming an SQL selct can do it?) that will > group each 'burst' of transactions and give me, for each group, the > start time and elapsed seconds. So for example the result for the above > would be > > Start: 05/10/07 12:49:54 > Duration: 6 secs I don't see any way you could do that in SQL, with the data you have. If you could add a "Burst ID" field to each burst, then of course it becomes trivial.
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