--方法1:
Update Table1
set c = (select c from Table2 where a = Table1.a)
where c is null
--方法2:
update A
set newqiantity=B
Update + SELECT 快速更新
最新推荐文章于 2025-07-14 16:01:20 发布
--方法1:
Update Table1
set c = (select c from Table2 where a = Table1.a)
where c is null
--方法2:
update A
set newqiantity=B