SHOW SETTINGS
Shows the databend's system settings.
You can change it by set command, like set max_threads = 1.
Syntax
SHOW SETTINGS
Examples
SHOW SETTINGS;
+--------------------------------+------------+------------+---------+----------------------------------------------------------------------------------------------------+--------+
| name | value | default | level | description | type |
+--------------------------------+------------+------------+---------+----------------------------------------------------------------------------------------------------+--------+
| enable_async_insert | 0 | 0 | SESSION | Whether the client open async insert mode, default value: 0 | UInt64 |
| enable_cbo | 1 | 1 | SESSION | If enable cost based optimization, default value: 1 | UInt64 |
| enable_new_processor_framework | 1 | 1 | SESSION | Enable new processor framework if value != 0, default value: 1 | UInt64 |
| enable_planner_v2 | 1 | 1 | SESSION | Enable planner v2 by setting this variable to 1, default value: 1 | UInt64 |
| flight_client_timeout | 60 | 60 | SESSION | Max duration the flight client request is allowed to take in seconds. By default, it is 60 seconds | UInt64 |
| format_compression | None | None | SESSION | Format compression, default value: None | String |
| format_empty_as_default | 1 | 1 | SESSION | Format empty_as_default, default value: 1 | UInt64 |
| format_field_delimiter | , | , | SESSION | Format field delimiter, default value: , | String |
| format_quote_char | '"' | '"' | SESSION | The quote char for CSV. default value: '"'. | String |
| format_record_delimiter | "\n" | "\n" | SESSION | Format record_delimiter, default value: "\n" | String |
| format_skip_header | 0 | 0 | SESSION | Whether to skip the input header, default value: 0 | UInt64 |
| group_by_two_level_threshold | 10000 | 10000 | SESSION | The threshold of keys to open two-level aggregation, default value: 10000 | UInt64 |
| input_read_buffer_size | 1048576 | 1048576 | SESSION | The size of buffer in bytes for input with format. By default, it is 1MB. | UInt64 |
| max_block_size | 10000 | 10000 | SESSION | Maximum block size for reading | UInt64 |
| max_execute_time | 0 | 0 | SESSION | The maximum query execution time. it means no limit if the value is zero. default value: 0 | UInt64 |
| max_threads | 10 | 16 | SESSION | The maximum number of threads to execute the request. By default, it is determined automatically. | UInt64 |
| quoted_ident_case_sensitive | 1 | 1 | SESSION | Case sensitivity of quoted identifiers, default value: 1 (aka case-sensitive) | UInt64 |
| sql_dialect | PostgreSQL | PostgreSQL | SESSION | SQL dialect, support "PostgreSQL" "MySQL" and "Hive", default value: "PostgreSQL" | String |
| storage_read_buffer_size | 1048576 | 1048576 | SESSION | The size of buffer in bytes for buffered reader of dal. By default, it is 1MB. | UInt64 |
| timezone | UTC | UTC | SESSION | Timezone, default value: UTC, | String |
| unquoted_ident_case_sensitive | 0 | 0 | SESSION | Case sensitivity of unquoted identifiers, default value: 0 (aka case-insensitive) | UInt64 |
| wait_for_async_insert | 1 | 1 | SESSION | Whether the client wait for the reply of async insert, default value: 1 | UInt64 |
| wait_for_async_insert_timeout | 100 | 100 | SESSION | The timeout in seconds for waiting for processing of async insert, default value: 100 | UInt64 |
+--------------------------------+------------+------------+---------+----------------------------------------------------------------------------------------------------+--------+