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语法: delete from 表名称 where 删除条件注意: 如果没有设定删除条件,该表内容鬼都不剩!
例:- mysql> use RUNOOB;
- Database changed
- mysql> DELETE FROM runoob_tbl WHERE runoob_id=3;
- Query OK, 1 row affected (0.23 sec)
复制代码 在PHP中: 依旧用mysqli_query() 函数来执行,贴代码啦- <?php
- $dbhost = 'localhost:3306'; // mysql服务器主机地址
- $dbuser = 'root'; // mysql用户名
- $dbpass = '123456'; // mysql用户名密码
- $conn = mysqli_connect($dbhost, $dbuser, $dbpass);
- if(! $conn )
- {
- die('连接失败: ' . mysqli_error($conn));
- }
- // 设置编码,防止中文乱码
- mysqli_query($conn , "set names utf8");
-
- $sql = 'DELETE FROM runoob_tbl
- WHERE runoob_id=3
- mysqli_select_db( $conn, 'RUNOOB' );
- $retval = mysqli_query( $conn, $sql );
- if(! $retval )
- {
- die('无法删除数据: ' . mysqli_error($conn));
- }
- echo '数据删除成功!mysqli_close($conn);
- ?>
复制代码
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