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From Ding Dinghua <dingdinghu...@gmail.com>
Subject Re: about count(a particular column) in kylin
Date Wed, 17 Aug 2016 07:17:19 GMT
ping...

2016-08-16 21:00 GMT+08:00 Ding Dinghua <dingdinghua85@gmail.com>:
> Hi:
>     Does kylin support count(a particular column) now?
>    that is, count will skip rows which the particular column value is null.
>     In our test, I found it is not supported currently(kylin-1.5.2),
>      and I found that agg->aggCalls->arglist is null in
> OLAPAggregateRule::convert when I submmit sql like:
>     select dt, count(xxx) from test_table group by dt;
>     The information about the particular column is lost in kylin, so I
> want to know why?
>      Since I found count(xxx) is support in calcite:
>        https://calcite.apache.org/docs/reference.html
>
> --
> Ding Dinghua



-- 
Ding Dinghua

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