SQL server 批量插入和更新數據

批量插入數據

insert into A表數據庫名.[dbo].A(a,b,c)
(select a,b,c from B表數據庫名.[dbo].B)

批量更新數據

根據身份證第二位更新性別
update Person set
Sex = case SUBSTRING(ID_Num,17,1)%2 when 1 then '男' else '女' end from Person

錯誤寫法

update Person set Sex = (select case SUBSTRING(ID_Num,17,1)%2 when 1 then '男' else '女' end from Person) 報錯：子查詢返回的值不止一個