delete from msgmessag where exists (select 1 from msgmessag where contentid='9') 在oracle中执行这条语句后的结果不是应该：将msgmessag中contentid='9'的记录删除掉么?怎么会把msgmessag 这个表中所有的记录都给删掉

I have delete you from my just delete me from your buddy list you can delete me from your list 是什么意思 delete from tablea & truncate table tablea 的区别? 英语翻译文件名是UserConfig.sql内容是:GO--delete old recorddelete from sysparam where p_name = 'Authercase' delete from sysparam where p_name = 'UserCFG_CRCCode' delete from sysparam where p_name = 'UserCFG_ICCard_Pwd' GO---- From Date:2007 delete table from table where …… 我常见的都是 delete from table[A] where …………是 delete table[A] from table[B] where ………… i delete you from my list stop to talk to me we must keep away from some bad information or delete it有错吗 VFP里的%是什么意思例：delete from 图书 where 书名=”A% 为什么不用“A* delete from 表名 where status=1什么意思请问status=1代表什么? Do you really want to delete yi8fang from your block list? delete意思 urgent delete, delete是什么意思? SQL简单语句 DELETE FROM table如何实现：删除Id从4到最后一条记录的SQL语句DELETE FROM table WHERE Id BETWEEN 4 AND ...我本来想：DELETE FROM table WHERE Id BETWEEN 4 AND (SELECT COUNT(Id) FROM table)但是不对啊. delete title from film where year>1970;这句哪里错了?删除资料：就会删除所有年代早于1970年（不含）的电影了.delete title from film where year i want to delete you from my life这句话是什么意思,请大家帮我翻译下! DELETE FROM L_DanWei WHERE dw_id = @dw_id这几句话啥意思 特别是后面的dw_id 和 @dw_id啥意思