old_password,new_password):try:# 连接到MySQL数据库connection=mysql.connector.connect(host='localhost',user=user,password=old_password,database='your_database_name')ifconnection.is_connected():cursor=connection.cursor()# 更改密码的SQL语句change_password_query=f"ALTER USER '{user}'@'localhost' IDE...
1. 更改密码过期策略:可以通过修改default_password_lifetime参数来调整密码过期的策略,例如: SETGLOBALdefault_password_lifetime=90; 1. 类图 以下是关于用户密码过期查询的类图示例: MySQL+connect() : void+queryUserPasswordExpired() : void+resetUserPassword() : void+changePasswordPolicy() : void 查询流程...
mysql>dropdatabase ifexistsdrop_database; Query OK,0rowsaffected,1warning (0.00sec)//产生一个警告说明此数据库不存在 mysql>createdatabase drop_database; Query OK,1rowaffected (0.00sec) mysql>dropdatabase ifexistsdrop_database;//ifexists判断数据库是否存在,不存在也不产生错误 Query OK,0rowsaffec...
slave@localhost[test]>change master to-> master_user='repl',-> master_password='replpwd'; Query OK,0rows affected,2warnings (0.00sec) --修改密码后,从库状态正常,以下检查结果不再列出 slave@localhost[test]>start slave;--查看master.info,密码已更改且为名文 slave@localhost[(none)]> systemgrep...
root@mysql> CREATE USER Alice IDENTIFIED BY ‘pwd@1’ PASSWORD -> REQUIRE CURRENT; Query OK, 0 rows affected (0.00 sec) root@mysql> ALTER USER Alice IDENTIFIED BY ‘pwd@2’; ERROR 13207 (HY000): Current password needs to be specified in the REPLACE clause in order to change it. root...
mysql> ALTER USER USER() IDENTIFIED BY 'password'; Query OK, 0 rows affected (0.01 sec) mysql> SELECT 1; +---+ | 1 | +---+ | 1 | +---+ 1 row in set (0.00 sec) After the client resets the password, the server restores normal access for the session, as well as for subse...
alter user '用户名'@'主机名' identified with mysql_native_password by '新密码'; 4、删除用户 drop user '用户名'@'主机名' 示例: 5、注意 * 主机名可以使用%通配 * 这类SQL开发人员操作较少,主要是DBA(Database Administrator数据库管理员)使用 ...
安装和卸载的示例如下：mysql> INSTALL PLUGIN CONNECTION_CONTROL SONAME 'connection_control.so';Query OK, 0 rows affected (0.22 sec)mysql> INSTALL PLUGIN CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS SONAME 'connection_control.so';Query OK, 0 rows affected (0.05 sec)mysql> uninstall plugin CONNECTION_...
Query OK, 0 rows affected (0.00 sec) 4.4连接数据库 命令: use 例如:如果xhkdb数据库存在,尝试存取它: mysql> use xhkdb; 屏幕提示:Database changed use语句可以通告MySQL把db_name数据库作为默认(当前)数据库使用,用于后续语句。该数据库保持为默认数据库,直到语段的结尾,或者直到发布一个不同的USE语句:...
CREATEUSERuser[IDENTIFIEDBY[PASSWORD]'password'][,user[IDENTIFIEDBY[PASSWORD]'password']] 新建普通用户 代码语言:javascript 复制 CREATEUSER'jeffrey'@'localhost'identifiedBY'mypass'; 用户名部分为“jeffrey”,主机名默认为“%”(即对所有主机开放权限) ...