Sql 更新具有相同总和和分组依据的两列

我想用这个查询中的值更新，但它说的是错误。。。我正试图把它最小化

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

像这样试试

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

像这样试试

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

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