SQL 批量更新
select * from cd
select * from cd_2
update cd set title = cd_2.title ,price = cd_2.price
output deleted.*,inserted.*
from cd_2
where cd.id = cd_2.id
select * from cd_2
update cd set title = cd_2.title ,price = cd_2.price
output deleted.*,inserted.*
from cd_2
where cd.id = cd_2.id