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From Congxian Qiu <qcx978132...@gmail.com>
Subject Re: Group by multiple fields
Date Tue, 08 Oct 2019 04:25:34 GMT
Hi Miguel

Maybe the doc[1] about how to specifying the keys can help.

[1]
https://ci.apache.org/projects/flink/flink-docs-release-1.9/dev/api_concepts.html#specifying-keys
Best,
Congxian


Miguel Farrajota <miguel.farrajota@feedzai.com> 于2019年10月8日周二 上午12:09写道:

> Hi,
>
> I'm looking to do some result aggregations on a event stream using several
> fields (for example, country and city) but I'm having a hard time finding
> any information about how to do this programmatically in the official
> documentation. I've found a couple of examples using SQL, but I'm looking
> to do this using something  .aggregate() or .process()
>
> Can anyone shed some light on this?
>
> Thanks
>
> - Miguel Farrajota
>
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