Thanks for confirming!

________________________________
From: Matthias J. Sax <matth...@confluent.io>
Sent: Saturday, November 3, 2018 1:35 AM
To: dev@kafka.apache.org
Subject: Re: KSQL with changelog topic

I see. Makes sense.

AFAIK, this is not supported atm, because KSQL cannot handle the
`Windowed<K>` datatype yet.



-Matthias

On 11/1/18 9:28 PM, Boyang Chen wrote:
> For example, I have a stream windowed aggregation changlog topic 
> KStream--XXX--changelog-000026, does KSQL support a simple query like
>
> ```
>
> select * from
>
> changelog_topic
>
> limit 10
>
> ```
>
> I'm not sure because the serde for window store changelog is compound 
> Windowed<K>.
>
>
> Hope this makes sense. Thank you!
>
>
> ________________________________
> From: Matthias J. Sax <matth...@confluent.io>
> Sent: Friday, November 2, 2018 5:06 AM
> To: dev@kafka.apache.org
> Subject: Re: KSQL with changelog topic
>
> I am not sure if I understand the question. Can you elaborate?
>
> -Matthias
>
>
> On 11/1/18 10:38 AM, Boyang Chen wrote:
>> Hey there,
>>
>>
>> a dumb question that I haven't found the answer anywhere: does KSQL support 
>> query towards Stream applications'
>>
>> changelog topic? Especially window store changelog, since it has a more 
>> complex key schema.
>>
>>
>> Thanks!
>>
>
>

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