sql - 同じ SUM と Group BY で 2 つの列を更新する

Question

このクエリの値で更新したいのですが、エラーが発生しています...最小化しようとしています。

update p
set a10=t.sumgc
from temp as p inner join 
(SELECT     SUM(gcsanad) as sumgc,good_gr
fROM         dbo.fgoodgroup 
WHERE     (flag = 2)
group by good_gr ) as t
on t.good_gr=p.a3
,
a11=t.sumgc
from temp as p inner join 
(SELECT     SUM(gcsanad) as sumgc,good_gr
fROM         dbo.fgoodgroup 
WHERE     (flag = 4) 
group by good_gr ) as t
on t.good_gr=p.a3

Answer 1

このようにしてみてください

update p
set a10=t.sumgc
,
a11=t.sumgc1

from temp as p inner join 
(SELECT 
  (case when  flag = 2 then   SUM(gcsanad)  end) as sumgc,
  (case when  flag = 4 then   SUM(gcsanad)  end) as sumgc1
fROM         dbo.fgoodgroup 
group by good_gr ) as t
on t.good_gr=p.a3