aggregation expression

[#1]

I wrote an expression a while ago and can't really understand anymore what it means.

=class(aggr(count(DISTINCT emptyings_id),product_id),5)

Can anyone explain this to me?

Kind regards,

Katleen

[#2]

Anyone, please?

[antoniotiman]

Hi Katleen,

I try to explain it, see attachment.

Regards,

Antonio