在单个查询中使用IN()从MySQL表中删除记录
让我们创建一个表-
mysql> create table DemoTable1922 ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(20) );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1922(StudentName) values('Chris'); mysql> insert into DemoTable1922(StudentName) values('Robert'); mysql> insert into DemoTable1922(StudentName) values('David'); mysql> insert into DemoTable1922(StudentName) values('Mike');
使用select语句显示表中的所有记录-
mysql> select * from DemoTable1922;
这将产生以下输出-
+-----------+-------------+ | StudentId | StudentName | +-----------+-------------+ | 1 | Chris | | 2 | Robert | | 3 | David | | 4 | Mike | +-----------+-------------+ 4 rows in set (0.00 sec)
这是使用以下命令从表中删除记录的查询IN()
:
mysql> delete from DemoTable1922 where StudentId IN(1,2,3,4);
让我们再次检查表记录-
mysql> select * from DemoTable1922;
这将产生以下输出-
Empty set (0.00 sec)