更新表字段，从另一个表中查询出来

Posted 2020-09-23 LuChaoShuai

UPDATE t 
SET t.Premium = (SELECT TOP 1 Max（ t2.Premium ）
                 FROM dbo.TableName t2
                 WHERE t2.SetId = 2012 AND t2.Id = t.ID)
FROM dbo.TableName t
WHERE t.SetId = 2013