delete a
from #ta a 
where exists (select 1 from #tb b where a.id=b.id)

------解决方案--------------------
delete #ta from #ta a where exists (select 1 from #tb  where id=a.id)

------解决方案--------------------
学习一下

------解决方案--------------------
终于明白为什么了,原来DEL语句真正删除的是delete语句后的那张表不信建张#tc表打上

delete #tc from 后的语句随便打只要符合语法规则出不出现#tc无所谓看看究竟被删除的是那张表

------解决方案--------------------
SQL code
delete a--用别名 from #ta a where exists (select 1 from #tb b where a.id=b.id) 
delete #ta --用别名 from #ta a where exists (select 1 from #tb b where a.id=b.id) 

-------以上两种都可以

------解决方案--------------------
学习