oracle sql plusスクリプトが長すぎます

Question

select (select SUM(t.fees_amount)from unit u, payment p, type_of_fees t WHERE u.unit_id = p.unit_id AND p.stof = t.stof AND u.unit_id LIKE '%U1001%' 
     AND p.stat = 'not payed') "BLOCK 1(Not Payed)", 

     (select SUM(t.fees_amount)from unit u, payment p, type_of_fees t WHERE u.unit_id = p.unit_id AND p.stof = t.stof AND u.unit_id LIKE '%U1001%' 
     AND p.stat = 'payed') "BLOCK 1(Payed)", 

     (select SUM(t.fees_amount)from unit u, payment p, type_of_fees t WHERE u.unit_id = p.unit_id AND p.stof = t.stof AND u.unit_id LIKE '%U1002%' 
     AND p.stat = 'not payed') "BLOCK 2(Not Payed)", 

     (select SUM(t.fees_amount)from unit u, payment p, type_of_fees t WHERE u.unit_id = p.unit_id AND p.stof = t.stof AND u.unit_id LIKE '%U1002%' 
     AND p.stat = 'payed') "BLOCK 2(Payed)" 

from dual; 

これに対処する方法はありますか？

Answer 1

あなたはこのために、条件付き集約を使用することができます。

select sum(case when u.unit_id like '%U1001%' and p.stat = 'not payed' then t.fees_amount else 0 end) as "BLOCK 1(Not Payed)", 
    sum(case when u.unit_id like '%U1001%' and p.stat = 'payed' then t.fees_amount else 0 end) as "BLOCK 1(Payed)", 
    sum(case when u.unit_id like '%U1002%' and p.stat = 'not payed' then t.fees_amount else 0 end) as "BLOCK 2(Not Payed)", 
    sum(case when u.unit_id like '%U1002%' and p.stat = 'payed' then t.fees_amount else 0 end) as "BLOCK 2(Payed)" 
from unit u 
join payment p on u.unit_id = p.unit_id 
join type_of_fees t on p.stof = t.stof; 

はまた、あなたがいつも代わりに古いコンマベースの結合の結合構文を明示的に使用する必要があります。