assignable dynamic privileges should be listed in SHOW PRIVILEGES statement

[morgo]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

In TiDB:

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 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                  |
| 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                    |
+-------------------------+---------------------------------------+-------------------------------------------------------+
31 rows in set (0.00 sec)

2. What did you expect to see? (Required)

In MySQL:

mysql [localhost:8024] {msandbox} ((none)) > 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                          |                                                       |
| SESSION_VARIABLES_ADMIN    | Server Admin                          |                                                       |
| RESOURCE_GROUP_USER        | Server Admin                          |                                                       |
| SYSTEM_VARIABLES_ADMIN     | Server Admin                          |                                                       |
| REPLICATION_SLAVE_ADMIN    | Server Admin                          |                                                       |
| REPLICATION_APPLIER        | Server Admin                          |                                                       |
| BINLOG_ENCRYPTION_ADMIN    | Server Admin                          |                                                       |
| RESOURCE_GROUP_ADMIN       | Server Admin                          |                                                       |
| INNODB_REDO_LOG_ARCHIVE    | Server Admin                          |                                                       |
| BINLOG_ADMIN               | Server Admin                          |                                                       |
| PERSIST_RO_VARIABLES_ADMIN | Server Admin                          |                                                       |
| TABLE_ENCRYPTION_ADMIN     | Server Admin                          |                                                       |
| SERVICE_CONNECTION_ADMIN   | Server Admin                          |                                                       |
| AUDIT_ADMIN                | Server Admin                          |                                                       |
| SYSTEM_USER                | Server Admin                          |                                                       |
| APPLICATION_PASSWORD_ADMIN | Server Admin                          |                                                       |
| ROLE_ADMIN                 | Server Admin                          |                                                       |
| BACKUP_ADMIN               | Server Admin                          |                                                       |
| CONNECTION_ADMIN           | Server Admin                          |                                                       |
| ENCRYPTION_KEY_ADMIN       | Server Admin                          |                                                       |
| CLONE_ADMIN                | Server Admin                          |                                                       |
| FLUSH_OPTIMIZER_COSTS      | Server Admin                          |                                                       |
| FLUSH_STATUS               | Server Admin                          |                                                       |
| FLUSH_TABLES               | Server Admin                          |                                                       |
| FLUSH_USER_RESOURCES       | Server Admin                          |                                                       |
| GROUP_REPLICATION_ADMIN    | Server Admin                          |                                                       |
| INNODB_REDO_LOG_ENABLE     | Server Admin                          |                                                       |
+----------------------------+---------------------------------------+-------------------------------------------------------+
62 rows in set (0.00 sec)

3. What did you see instead (Required)

The TiDB server doesn't show any of the dynamic privileges registered with the privilege manager.

4. What is your TiDB version? (Required)

mysql> SELECT tidb_version()\G
*************************** 1. row ***************************
tidb_version(): Release Version: v4.0.0-beta.2-2897-gcddb747fc
Edition: Community
Git Commit Hash: cddb747fcfa4fc7748d4f1fb5b31fb3b4e122e13
Git Branch: sysvar-cache
UTC Build Time: 2021-05-13 03:44:45
GoVersion: go1.13.15
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false
1 row in set (0.00 sec)

[ti-srebot]

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