我猜您正在使用sql Server。如果是这样，您可以在一个查询中完成所有操作：
with toupdate as (
select p.*,
row_number() over (partition by fkProductID order by pkProduct) as new_intIssue
from dbo.tblProducts p
)
update toupdate
set intIssue = new_intIssue
where intIssue <> new_intIssue;
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