Re: Todo item: distinct clause - guidance

On 07/11/22 00:42, Laurenz Albe wrote:
> On Sun, 2022-11-06 at 18:39 +0530, Ankit Kumar Pandey wrote:
>> I was looking for some to-do item to pick up and came across 'Implement DISTINCT
>> clause in window aggregates'. Can someone pleaseelaborate what is expectation here?
>> Do feature request still exists as DISTINCT worked as expected if we try functions
>> like avg(distinct col)?
> Whis is about window functions, like
>
> WITH q(a,b) AS (VALUES (1, 1), (1, 1), (2, 1))
> SELECT *,
> count(DISTINCT a) OVER (PARTITION BY b)
> FROM q;
>
> ERROR: DISTINCT is not implemented for window functions
> LINE 3: count(DISTINCT a) OVER (PARTITION BY b)
> ^
>
> Yours,
> Laurenz Albe

Thanks a lot Laurenz, I got the issue now. I was looking at aggregation
function without windowing.

I will revisit this again.

Thanks,

Ankit