delete刪除表記錄

delete 刪除表記錄

格式1：刪除所有的表記錄
delete from 表名;

格式2：僅刪除符合條件的記錄
delete from 表名
where 條件;

mysql> delete from user where shell is null;
mysql> select * from user where shell is null;
Empty set (0.00 sec)