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                                  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 在8.0版本下 
	
		
			| 1 | 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 
	
		
			| 1 | create user test@'localhost' identified by '123456'; |  
	
		
			| 1 | grant all privileges on test.* to test@'localhost'; |  MySQL8.0密码登录不上 
	
		
			| 1 | 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 
	
		
			| 1 2 | 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 
	
		
			| 1 2 3 | 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? 
	
		
			| 1 2 3 4 5 6 7 | 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。 
	
		
			| 1 2 3 4 5 6 7 8 | 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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