Re: Sequential event query
От | Steve Crawford |
---|---|
Тема | Re: Sequential event query |
Дата | |
Msg-id | 48627C8B.10200@pinpointresearch.com обсуждение исходный текст |
Ответ на | Re: Sequential event query (Steve Crawford <scrawford@pinpointresearch.com>) |
Список | pgsql-sql |
Steve Crawford wrote: > Allan Kamau wrote: >> Hi Steve, >> Am having difficulties (there is a chance I could be the only one) >> trying to see how the results you've listed under "I would want to >> get:" section can be generated from the information you have provided >> in your implicit problem statement. > Remember the events are listed chronologically. Stated verbosely: > > 1: Value 1 happened 1 sequential time > 3: Value 3 happened 1 sequential time > 1: Value 1 happened 1 sequential time > 4: > 4: Value 4 happened 2 sequential times ... And for completeness I suppose I should state that I am aware that a run of, say, 4 sequential events includes runs of 1, 2 and 3 events. I'm only interested in the longest run in order to set thresholds. Cheers, Steve
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