select n random rows per specified group

Question

I am struggling to find an optimal solution for the following problem. Suppose I have a table \'Table\' like this:

id    name    report_id
 1    name1    1
          


        

Answer 1

This doesn't work in mysql, but in psql you can use partition by

select name,report_id from
(select name,report_id,row_number()
over
(partition by name order by random())
as rn from Table) a
where rn<=10

I had this same question and found this answer from a colleague.