MySQL AND在WHERE中用于通过使用多个条件进行过滤来获取记录。让我们首先创建一个表-
mysql> create table DemoTable -> ( -> Id int, -> Name varchar(20) -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values(101,'Chris'); mysql> insert into DemoTable values(102,'David'); mysql> insert into DemoTable values(103,'Bob');
使用select语句显示表中的所有记录-
mysql> select * from DemoTable;
这将产生以下输出-
+------+-------+ | Id | Name | +------+-------+ | 101 | Chris | | 102 | David | | 103 | Bob | +------+-------+ 3 rows in set (0.00 sec)
这是删除记录的查询-
mysql> delete from DemoTable where Id=102 and Name='David';
让我们再次检查表记录-
mysql> select * from DemoTable;
这将产生以下输出-
+------+-------+ | Id | Name | +------+-------+ | 101 | Chris | | 103 | Bob | +------+-------+ 2 rows in set (0.00 sec)