Navicat 1142 SELECT command denied to user "sx"@"xxx" for table "user"

使用Navicat使用sx用户连接数据库时或者连接为用户sx开放的数据库travel_agency时，Navicat窗口弹出上述问题


具体原因

具体原因就是该用户（sx）无法读取user表（但注意，应该是Mysql版本改动表名发生了变化，实际上无法读取的是mysql.user表）

处理方式：（不用重启数据库服务）

• 首先检验此时的授权情况

  mysql> show grants for sx;
  +-------------------------------------------------------------------------+
  | Grants for sx@%                                                         |
  +-------------------------------------------------------------------------+
  | GRANT USAGE ON *.* TO "sx"@"%"                                          |
  | GRANT ALL PRIVILEGES ON `travel_agency`.* TO "sx"@"%" WITH GRANT OPTioN |
  +-------------------------------------------------------------------------+
  2 rows in set (0.00 sec)
  

• 通过root方式连接数据库，然后通过Navicat让sx用户获得user数据库以及mysql.user表的select权限（仅授权select）

  

• 再次查询授权情况

  mysql> show grants for sx;
  +------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | Grants for sx@%                                                                                                                                                                                                                                |
  +------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | GRANT USAGE ON *.* TO "sx"@"%"                                                                                                                                                                                                                 |
  | GRANT SELECT ON `user`.* TO "sx"@"%"                                                                                                                                                                                                           |
  | GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, EVENT, TRIGGER ON `travel_agency`.* TO "sx"@"%" WITH GRANT OPTION |
  | GRANT SELECT ON `mysql`.`user` TO "sx"@"%"                                                                                                                                                                                                     |
  +------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  4 rows in set (0.00 sec)
  

  当然，也可以在命令行中手动赋权，如GRANT SELECT ON user.* TO "sx"@"%"