try:update T_bbs_Board
set child=isnull(B.child,0)
from T_bbs_Board A
left join (
select ParentID,
child=count(ParentID)
from T_bbs_Board
group by ParentID
)B on A.ParentID=B.ParentID
set child=isnull(B.child,0)
from T_bbs_Board A
left join (
select ParentID,
child=count(ParentID)
from T_bbs_Board
group by ParentID
)B on A.ParentID=B.ParentID
解决方案 »
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