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SHOW DIST VARIABLE

Description

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

Syntax

ShowDistVariable ::=
  'SHOW' ('VARIABLES'|'VARIABLE' 'WHERE' 'NAME' '=' variableName)

variableName ::=
  identifier

Return Value Description

Columns Description
variable_name system variable name
variable_value systen variable value

Supplement

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

Example

  • Query all system variables configuration of PROXY
SHOW DIST VARIABLES;

mysql> SHOW DIST VARIABLES;
+---------------------------------------+----------------+
| variable_name                         | variable_value |
+---------------------------------------+----------------+
| sql_show                              | false          |
| sql_simple                            | false          |
| kernel_executor_size                  | 0              |
| max_connections_size_per_query        | 1              |
| check_table_metadata_enabled          | false          |
| sql_federation_type                   | NONE           |
| proxy_frontend_database_protocol_type |                |
| proxy_frontend_flush_threshold        | 128            |
| proxy_hint_enabled                    | false          |
| proxy_backend_query_fetch_size        | -1             |
| proxy_frontend_executor_size          | 0              |
| proxy_backend_executor_suitable       | OLAP           |
| proxy_frontend_max_connections        | 0              |
| proxy_backend_driver_type             | JDBC           |
| proxy_mysql_default_version           | 5.7.22         |
| proxy_default_port                    | 3307           |
| proxy_netty_backlog                   | 1024           |
| proxy_instance_type                   | Proxy          |
| proxy_metadata_collector_enabled      | false          |
| agent_plugins_enabled                 | true           |
| cached_connections                    | 0              |
| transaction_type                      | LOCAL          |
+---------------------------------------+----------------+
22 rows in set (0.01 sec)
  • Query specified system variable configuration of PROXY
SHOW DIST VARIABLE WHERE NAME = sql_show;

mysql> SHOW DIST VARIABLE WHERE NAME = sql_show;
+---------------+----------------+
| variable_name | variable_value |
+---------------+----------------+
| sql_show      | false          |
+---------------+----------------+
1 row in set (0.00 sec)

Reserved word

SHOW, DIST, VARIABLE, VARIABLES, NAME