SHOW DIST VARIABLE

Description

The SHOW DIST VARIABLE syntax is used to query PROXY system variables configuration.

Syntax

Grammar Railroad diagram

  1. ShowDistVariable ::=
  2.   'SHOW' 'DIST' ('VARIABLES' ('LIKE' likePattern)?| 'VARIABLE' 'WHERE' 'NAME' '=' variableName)
  4. likePattern ::=
  5.   string
  7. variableName ::=
  8.   identifier

Return Value Description

ColumnsDescription
variable_namesystem variable name
variable_valuesystem variable value

Supplement

  • When variableName is not specified, the default is query all PROXY variables configuration.

Example

  • Query all system variables configuration of PROXY
  1. SHOW DIST VARIABLES;
  1. mysql> SHOW DIST VARIABLES;
  2. +---------------------------------------+-----------------+
  3. | variable_name                         | variable_value  |
  4. +---------------------------------------+-----------------+
  5. | agent_plugins_enabled                 | true            |
  6. | cached_connections                    | 0               |
  7. | cdc_server_port                       | 33071           |
  8. | check_table_metadata_enabled          | false           |
  9. | kernel_executor_size                  | 0               |
  10. | max_connections_size_per_query        | 1               |
  11. | proxy_backend_query_fetch_size        | -1              |
  12. | proxy_default_port                    | 3307            |
  13. | proxy_frontend_database_protocol_type |                 |
  14. | proxy_frontend_executor_size          | 0               |
  15. | proxy_frontend_flush_threshold        | 128             |
  16. | proxy_frontend_max_connections        | 0               |
  17. | proxy_frontend_ssl_cipher             |                 |
  18. | proxy_frontend_ssl_enabled            | false           |
  19. | proxy_frontend_ssl_version            | TLSv1.2,TLSv1.3 |
  20. | proxy_meta_data_collector_enabled     | true            |
  21. | proxy_netty_backlog                   | 1024            |
  22. | sql_federation_type                   | NONE            |
  23. | sql_show                              | false           |
  24. | sql_simple                            | false           |
  25. | system_log_level                      | INFO            |
  26. +---------------------------------------+-----------------+
  27. 21 rows in set (0.01 sec)
  • Query specified system variable configuration of PROXY
  1. SHOW DIST VARIABLE WHERE NAME = sql_show;
  1. mysql> SHOW DIST VARIABLE WHERE NAME = sql_show;
  2. +---------------+----------------+
  3. | variable_name | variable_value |
  4. +---------------+----------------+
  5. | sql_show      | false          |
  6. +---------------+----------------+
  7. 1 row in set (0.00 sec)

Reserved word

SHOW, DIST, VARIABLE, VARIABLES, NAME