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mysql  grant报错

umichan 人气:0

网上查到的grant方式大多会报错,主要原因是MySQL版本8.0后不能再使用原来的方式

查询MySQL版本

SELECT version();

在8.0版本下

grant all privileges on test.* to test@'%' identified by '123456'; 

报错

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'identified by '123456'' at line 1

正确的grant方式

create user test@'localhost' identified by '123456';
grant all privileges on test.* to test@'localhost';
flush privileges;

MySQL8.0密码登录不上

alter user test@'localhost' identified with mysql_native_password by '123456';

补充:MySQL ERROR 1064 (42000)——不管怎样grant总是报错,怎么回事?

用过MySQL的朋友都知道,经常会有一些grant(授权)操作,不知道你有没有遇到过这样的问题。

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘identified by ‘123456’’ at line 1

MySQL grant的SQL

粘贴到终端执行,报错!
每个字母敲后执行,又报错!
反复确认很多遍执行,又又报错!

都要疯了,怎么办。别急,接着看文章。

版本的不同导致

首先,你先检查一下你的MySQL版本, 大多数执行报错的MySQL版本是8.0的,通过记忆甚至盲打命令都不层报错的,估计通常都是用的最多的5.7了。信不信呢?

用真实数据测试

1.先用MySQL 8.0试一下

mysql> grant all privileges on test.* to test@'%' identified by '123456';  
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'identified by '123456'' at line 1

报错了

2.再用MySQL 5.7试一下

mysql> grant all privileges on test.* to test@'%' identified by '123456';    
Query OK, 0 rows affected, 1 warning (0.08 sec)
mysql> flush privileges;

成功。

细心的朋友有没有注意到返回结果里有一个信息:1 warning,是什么内容呢?

mysql> show warnings;
+---------+------+------------------------------------------------------------------------------------------------------------------------------------+
| Level   | Code | Message                                                                                                                            |
+---------+------+------------------------------------------------------------------------------------------------------------------------------------+
| Warning | 1287 | Using GRANT for creating new user is deprecated and will be removed in future release. Create new user with CREATE USER statement. |
+---------+------+------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

原来在MySQL5.7的时候,官方就提示了,这个语法SQL将要被弃用了。

正确的执行赋权

那么在MySQL8.0版本及以后,我们如何正确执行grant呢?

先创建用户,再赋予授权。

mysql> create user test@'localhost' identified by '123456';
Query OK, 0 rows affected (0.10 sec)

mysql> grant all privileges on test.* to test@'localhost';
Query OK, 0 rows affected (0.17 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.18 sec)

这个方法也适用MySQL5.7版本,所以建议大家以后使用这种方式赋权,一键建用户加赋权官方已经弃用了。

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