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emanueledellavalle / streaming-data-analytics

Apache License 2.0
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spiegare il ruolo di #lastevent in EPL #44

Open emanueledellavalle opened 2 months ago

emanueledellavalle commented 2 months ago 
select * from MarketData
where price > (select max(price) from MarketData(symbol='GOOG')#lastevent)

[src: http://esper.espertech.com/release-8.9.0/reference-esper/html_single/#epl-subqueries ]

select * from TickEvent#lastevent 
    inner join NewsEvent#lastevent on tick.symbol = news.symbol

[src: http://esper.espertech.com/release-8.9.0/reference-esper/html_single/#epl-join ]