我似乎无法重新创建一个我已经删除的简单用户,即使是MySQL的根用户。

我的案例:用户'jack'之前存在,但我从mysql中删除了它。用户才能重新创建它。我在那张桌子上没看到这东西的痕迹。如果我对其他一些随机用户名执行这个命令,比如'jimmy',它就能正常工作(就像它最初对'jack'所做的那样)。

我做了什么破坏用户'jack',我如何撤销这个破坏,以重新创建'jack'作为MySQL安装的有效用户?

参见下面的示例。(当然,最初,jack这个词从被创造到被移除之间有很长一段时间。)

mysql> CREATE USER 'jack'@'localhost' IDENTIFIED BY 'test123';
Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;
+------------------+-----------------+
| user             | host            |
+------------------+-----------------+
| root             | 127.0.0.1       |
| debian-sys-maint | localhost       |
| jack             | localhost       |
| root             | localhost       |
| root             | russ-elite-book |
+------------------+-----------------+
5 rows in set (0.00 sec)

mysql> delete from user where user = 'jack';
Query OK, 1 row affected (0.00 sec)

mysql> select user,host from user;
+------------------+-----------------+
| user             | host            |
+------------------+-----------------+
| root             | 127.0.0.1       |
| debian-sys-maint | localhost       |
| root             | localhost       |
| root             | russ-elite-book |
+------------------+-----------------+
4 rows in set (0.00 sec)

mysql> CREATE USER 'jack'@'localhost' IDENTIFIED BY 'test123';
ERROR 1396 (HY000): Operation CREATE USER failed for 'jack'@'localhost'
mysql> CREATE USER 'jimmy'@'localhost' IDENTIFIED BY 'test123';
Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;
+------------------+-----------------+
| user             | host            |
+------------------+-----------------+
| root             | 127.0.0.1       |
| debian-sys-maint | localhost       |
| jimmy            | localhost       |
| root             | localhost       |
| root             | russ-elite-book |
+------------------+-----------------+
5 rows in set (0.00 sec)

当前回答

我和OP有同样的问题,接受的答案不适合我。在接受答案的评论中,@Rathish发布了一个对我有用的解决方案,我想引起大家的注意。

这是链接:

https://www.rathishkumar.in/2018/10/Error-1396-HY000-Operation-CREATE-DROP-USER-failed-for-user-host.html

Rathish的解决方案是撤销所有用户的访问权限:

REVOKE ALL ON *.* FROM 'user'@'host';
DROP USER 'user'@'host';
FLUSH PRIVILEGES;

他还很有帮助地指出,你可以通过选择“user”和“host”来查询下面的表格,以确定你是否有之前操作留下的残留用户:

mysql.user: User accounts, global privileges, and other non-privilege columns
mysql.db: Database-level privileges
mysql.tables_priv: Table-level privileges
mysql.columns_priv: Column-level privileges
mysql.procs_priv: Stored procedure and function privileges
mysql.proxies_priv: Proxy-user privilege

谢谢你!

其他回答

如果你在mysql上使用DELETE语句。如果试图删除一个用户,然后尝试用CREATE user重新建立用户,将会得到一个1396错误。通过运行DROP USER 'username'@'host'来摆脱这个错误;

DELETE 
  FROM mysql.user 
 WHERE user = 'jack';

(你会得到1396个错误,如果你试图重新创建杰克)

CREATE USER 'jack'@'localhost' IDENTIFIED BY PASSWORD '*Fi47ytFF3CD5B14E7EjkjkkC1D3F8086A5C0-krn';

(通过运行DROP USER来摆脱这种情况)

DROP USER 'jack'@'localhost';

(我想FLUSH特权不会造成伤害,但肯定会先放弃用户。)

two method 
one :
setp 1: drop user 'jack'@'localhost';
setp 2: create user 'jack'@localhost identified by 'ddd';

two:
setp 1: delete from user where user='jack'and host='localhost';
setp 2: flush privileges;
setp 3: create user 'jack'@'localhost' identified by 'ddd';

只需从mysql.db中删除与用户相关的数据(也可以从其他表中删除),然后重新创建两者。

删除用户,刷新权限;然后,创建用户。它确实有效!

这篇文章MySQL错误1045(28000):访问拒绝用户'账单'@'localhost'(使用密码:YES)是有用的。有时,会有匿名用户“@‘localhost’”或“@‘127.0.0.1’”。为了解决这个问题,

首先删除“创建用户”失败的用户。 创建新用户。 向新用户授予所需的特权。 冲洗的特权。