使用MySQL仅删除表中的特定行
要只删除特定的行，请使用MySQLNOTIN()。让我们首先创建一个表-
mysql> create table DemoTable1830
(
StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
StudentName varchar(20)
)AUTO_INCREMENT=101;使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1830(StudentName) values('Chris');
mysql> insert into DemoTable1830(StudentName) values('David');
mysql> insert into DemoTable1830(StudentName) values('Mike');
mysql> insert into DemoTable1830(StudentName) values('Sam');
mysql> insert into DemoTable1830(StudentName) values('Bob');使用select语句显示表中的所有记录-
mysql> select * from DemoTable1830;
这将产生以下输出-
+-----------+-------------+ | StudentId | StudentName | +-----------+-------------+ | 101 | Chris | | 102 | David | | 103 | Mike | | 104 | Sam | | 105 | Bob | +-----------+-------------+ 5 rows in set (0.00 sec)
这是仅删除特定行的查询-
mysql> delete from DemoTable1830
where StudentId NOT IN('101','103','105');让我们再次检查表记录：
mysql> select * from DemoTable1830;
这将产生以下输出-
+-----------+-------------+ | StudentId | StudentName | +-----------+-------------+ | 101 | Chris | | 103 | Mike | | 105 | Bob | +-----------+-------------+ 3 rows in set (0.00 sec)