Re: Using distinct count in over clause

[Akhil Das]

Does it support over? I couldn't find it in the documentation
http://spark.apache.org/docs/latest/sql-programming-guide.html#supported-hive-features

Thanks
Best Regards

On Fri, Jan 22, 2016 at 2:31 PM, 汪洋  wrote:

> I think it cannot be right.
>
> 在 2016年1月22日，下午4:53，汪洋  写道：
>
> Hi,
>
> Do we support distinct count in the over clause in spark sql?
>
> I ran a sql like this:
>
> select a, count(distinct b) over ( order by a rows between unbounded
> preceding and current row) from table limit 10
>
> Currently, it return an error says: expression ‘a' is neither present in
> the group by, nor is it an aggregate function. Add to group by or wrap in
> first() if you don't care which value you get.;
>
> Yang
>
>
>

Using distinct count in over clause

[汪洋]

Hi,

Do we support distinct count in the over clause in spark sql? 

I ran a sql like this:

select a, count(distinct b) over ( order by a rows between unbounded preceding 
and current row) from table limit 10

Currently, it return an error says: expression ‘a' is neither present in the 
group by, nor is it an aggregate function. Add to group by or wrap in first() 
if you don't care which value you get.;

Yang

Re: Using distinct count in over clause

[汪洋]

I think it cannot be right.

> 在 2016年1月22日，下午4:53，汪洋  写道：
> 
> Hi,
> 
> Do we support distinct count in the over clause in spark sql? 
> 
> I ran a sql like this:
> 
> select a, count(distinct b) over ( order by a rows between unbounded 
> preceding and current row) from table limit 10
> 
> Currently, it return an error says: expression ‘a' is neither present in the 
> group by, nor is it an aggregate function. Add to group by or wrap in first() 
> if you don't care which value you get.;
> 
> Yang
>