Pilih beberapa kolom Hitung satu kolom dan grup dengan satu kolom dalam satu tabel

select d.Employee, d.cnt, d.Post, d.c_name, d.Deli_Date, d.Note 
from (select d.*,
             count(*) over (partition by employee) as cnt,
             row_number() over (partition by employee order by deli_date desc) as seqnum
      from delivery d
     ) d
where seqnum = 1;
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