| From: | Steve Crawford <scrawford(at)pinpointresearch(dot)com> |
|---|---|
| To: | Allan Kamau <allank(at)sanbi(dot)ac(dot)za> |
| Cc: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: Sequential event query |
| Date: | 2008-06-25 17:12:43 |
| Message-ID: | 48627C8B.10200@pinpointresearch.com |
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| Thread: | |
| Lists: | 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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