SQL DELETE 语句

delete 语句

delete 语句用于删除表中的行。

语法

delete from 表名称 where 列名称 = 值

person:

lastname	firstname	address	city
gates	bill	xuanwumen 10	beijing
wilson	fred	zhongshan 23	nanjing

删除某行

“fred wilson” 会被删除：

delete from person where lastname = 'wilson' 

结果:

lastname	firstname	address	city
gates	bill	xuanwumen 10	beijing

删除所有行

可以在不删除表的情况下删除所有的行。这意味着表的结构、属性和索引都是完整的：

delete from table_name

或者：

delete * from table_name