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49 lines
1.8 KiB
Markdown
49 lines
1.8 KiB
Markdown
---
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title: "Settings Overview"
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sidebar_position: 1
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slug: /en/operations/settings/
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---
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# Settings Overview
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:::note
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XML-based Settings Profiles and [configuration files](https://clickhouse.com/docs/en/operations/configuration-files) are currently not supported for ClickHouse Cloud. To specify settings for your ClickHouse Cloud service, you must use [SQL-driven Settings Profiles](https://clickhouse.com/docs/en/operations/access-rights#settings-profiles-management).
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:::
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There are two main groups of ClickHouse settings:
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- Global server settings
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- Query-level settings
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The main distinction between global server settings and query-level settings is that global server settings must be set in configuration files, while query-level settings can be set in configuration files or with SQL queries.
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Read about [global server settings](/docs/en/operations/server-configuration-parameters/settings.md) to learn more about configuring your ClickHouse server at the global server level.
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Read about [query-level settings](/docs/en/operations/settings/settings-query-level.md) to learn more about configuring your ClickHouse server at the query level.
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## See non-default settings
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To view which settings have been changed from their default value:
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```sql
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SELECT name, value FROM system.settings WHERE changed
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```
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If you haven't changed any settings from their default value, then ClickHouse will return nothing.
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To check the value of a particular setting, specify the `name` of the setting in your query:
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```sql
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SELECT name, value FROM system.settings WHERE name = 'max_threads'
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```
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This command should return something like:
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```response
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┌─name────────┬─value─────┐
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│ max_threads │ 'auto(8)' │
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└─────────────┴───────────┘
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1 row in set. Elapsed: 0.002 sec.
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```
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