ClickHouse/docs/en/system_tables/system.settings.md
2018-03-25 05:04:22 +03:00

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# system.settings
Contains information about settings that are currently in use.
I.e. used for executing the query you are using to read from the system.settings table).
Columns:
```text
name String Setting name.
value String Setting value.
changed UInt8 - Whether the setting was explicitly defined in the config or explicitly changed.
```
Example:
```sql
SELECT *
FROM system.settings
WHERE changed
```
```text
┌─name───────────────────┬─value───────┬─changed─┐
│ max_threads │ 8 │ 1 │
│ use_uncompressed_cache │ 0 │ 1 │
│ load_balancing │ random │ 1 │
│ max_memory_usage │ 10000000000 │ 1 │
└────────────────────────┴─────────────┴─────────┘
```