1、权限列表
1.1、只允许做“权力”范围之内的事情，不可越界
1.2、相关权限如下所述：
mysql> show privileges;
+----------------------------+---------------------------------------+-------------------------------------------------------+
| Privilege | Context | Comment |
+----------------------------+---------------------------------------+-------------------------------------------------------+
| Alter | Tables | To alter the table |
| Alter routine | Functions,Procedures | To alter or drop stored functions/procedures |
| Create | Databases,Tables,Indexes | To create new databases and tables |
| Create routine | Databases | To use CREATE FUNCTION/PROCEDURE |
| Create role | Server Admin | To create new roles |
| Create temporary tables | Databases | To use CREATE TEMPORARY TABLE |
| Create view | Tables | To create new views |
| Create user | Server Admin | To create new users |
| Delete | Tables | To delete existing rows |
| Drop | Databases,Tables | To drop databases, tables, and views |
| Drop role | Server Admin | To drop roles |
| Event | Server Admin | To create, alter, drop and execute events |
| Execute | Functions,Procedures | To execute stored routines |
| File | File access on server | To read and write files on the server |
| Grant option | Databases,Tables,Functions,Procedures | To give to other users those privileges you possess |
| Index | Tables | To create or drop indexes |
| Insert | Tables | To insert data into tables |
| Lock tables | Databases | To use LOCK TABLES (together with SELECT privilege) |
| Process | Server Admin | To view the plain text of currently executing queries |
| Proxy | Server Admin | To make proxy user possible |
| References | Databases,Tables | To have references on tables |
| Reload | Server Admin | To reload or refresh tables, logs and privileges |
| Replication client | Server Admin | To ask where the slave or master servers are |
| Replication slave | Server Admin | To read binary log events from the master |
| Select | Tables | To retrieve rows from table |
| Show databases | Server Admin | To see all databases with SHOW DATABASES |
| Show view | Tables | To see views with SHOW CREATE VIEW |
| Shutdown | Server Admin | To shut down the server |
| Super | Server Admin | To use KILL thread, SET GLOBAL, CHANGE MASTER, etc. |
| Trigger | Tables | To use triggers |
| Create tablespace | Server Admin | To create/alter/drop tablespaces |
| Update | Tables | To update existing rows |
| Usage | Server Admin | No privileges - allow connect only |
| XA_RECOVER_ADMIN | Server Admin | |
| SHOW_ROUTINE | Server Admin | |
| SET_USER_ID | Server Admin | |
| RESOURCE_GROUP_USER | Server Admin | |
| APPLICATION_PASSWORD_ADMIN | Server Admin | |
| SYSTEM_VARIABLES_ADMIN | Server Admin | |
| AUDIT_ADMIN | Server Admin | |
| SERVICE_CONNECTION_ADMIN | Server Admin | |
| CLONE_ADMIN | Server Admin | |
| PERSIST_RO_VARIABLES_ADMIN | Server Admin | |
| FLUSH_USER_RESOURCES | Server Admin | |
| BINLOG_ADMIN | Server Admin | |
| ROLE_ADMIN | Server Admin | |
| SESSION_VARIABLES_ADMIN | Server Admin | |
| BINLOG_ENCRYPTION_ADMIN | Server Admin | |
| FLUSH_STATUS | Server Admin | |
| SYSTEM_USER | Server Admin | |
| ENCRYPTION_KEY_ADMIN | Server Admin | |
| REPLICATION_SLAVE_ADMIN | Server Admin | |
| GROUP_REPLICATION_ADMIN | Server Admin | |
| BACKUP_ADMIN | Server Admin | |
| RESOURCE_GROUP_ADMIN | Server Admin | |
| FLUSH_OPTIMIZER_COSTS | Server Admin | |
| TABLE_ENCRYPTION_ADMIN | Server Admin | |
| FLUSH_TABLES | Server Admin 
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