Hi,
I was wondering how you can achieve a "group by" like this
select tickDataFeed, stddev(price)
from StockTickEvent(symbol='IBM').win:length(10)
where volume > 1000
group by tickDataFeed
having stddev(price) > 0.8
I thought of using accumulate or collect, but I'm not sure of the exact syntax.
What I tried up to now
rule "test"
when
$event : CountEvent() over window:time( 15s ) from entry-point "Stream"
$grouped : Integer() from accumulate (CountEvent($c1:count), count($c1))
then ...
But that doesn't work. Any hints?
Best regards,
Andi
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