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Posted to user@flink.apache.org by Appleyuchi <ap...@163.com> on 2020/12/09 04:19:54 UTC

what's meaning of the "true/false" from "groupy...select"?THANKS


The complete code is:
https://paste.ubuntu.com/p/hpWB87kT6P/


The result is:
2> (true,1,diaper,4)
7> (true,3,rubber,2)
4> (true,1,beer,3)
7> (false,3,rubber,2)
7> (true,3,rubber,8)


That's the meaning of  true/false in the result 
after running the above code?


Thanks for your help~!

Re: what's meaning of the "true/false" from "groupy...select"?THANKS

Posted by Danny Chan <da...@apache.org>.

The "true" means the message is an insert/update after, the "false" means
the message is a retraction (for the old record that needs to be modified).

Appleyuchi <ap...@163.com> 于2020年12月9日周三 下午12:20写道：

>
> The complete code is:
> https://paste.ubuntu.com/p/hpWB87kT6P/
>
> The result is:
> 2> (true,1,diaper,4)
> 7> (true,3,rubber,2)
> 4> (true,1,beer,3)
> 7> (false,3,rubber,2)
> 7> (true,3,rubber,8)
>
> That's the meaning of  true/false in the result
> after running the above code?
>
> Thanks for your help~!
>
>
>
>