DELETE FROM L_DanWei WHERE dw_id = @dw_id

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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

把数据库中“L_DanWei”这张表里的 “dw_id”（单位id）等于“@dw_id”的记录删除
@dw_id是dw_id的变量,它可以为任意的很多值,比如程序提示你输入一个dw_id（单位id）去删除对应的单位记录,你输入的这个单位id就是@dw_id,它根据你的输入可以为不同的许多值.你可以输入5,也可输入50,500他们都是dw_id的变量的值.

DELETE FROM L_DanWei WHERE dw_id = @dw_id sql="delete from xiaolei where dalei_mz='"&dalei_mz&"'" delete from 表名 where status=1什么意思 delete table from table where …… String sql=" delete from rizhi where data="+data;为什么总是报错,dat delete from与delete * from delete from info join user where info.userid user.id delete from A where a_id in (select id from B where b_id in delete from和delete * from 的区别 I have delete you from my just delete me from your buddy list SQL简单语句 DELETE FROM table