Menggabungkan beberapa baris menjadi satu baris tanpa agregasi [Oracle]

Jika Anda tahu Anda memiliki tiga kolom, sebutkan dan gabungkan:

select max(case when seqnum = 1 then type end) as type1,
       max(case when seqnum = 1 then date end) as date1,
       max(case when seqnum = 1 then amount end) as amount1,
       max(case when seqnum = 2 then type end) as type2,
       max(case when seqnum = 2 then date end) as date2,
       max(case when seqnum = 2 then amount end) as amount2,
       max(case when seqnum = 3 then type end) as type3,
       max(case when seqnum = 3 then date end) as date3,
       max(case when seqnum = 3 then amount end) as amount3       
from (select t.*, rownum as seqnum
      from t
     ) t;

Jika Anda tidak tahu jumlah kolom yang dikembalikan, maka Anda perlu menggunakan SQL dinamis (execute immediate ).