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Adds udf settings explanation #4910

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Adds udf settings explanation #4910

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35cd7e4
Adds udf settings explanation
natalyjazzviolin Dec 4, 2025
e9616c1
Removes example
natalyjazzviolin Dec 4, 2025
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11 changes: 11 additions & 0 deletions docs/cloud/guides/cloud-compatibility.md
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Expand Up @@ -89,6 +89,17 @@ Federated queries with some external database and table engines, such as SQLite,

User-defined functions are a recent feature in ClickHouse. ClickHouse Cloud currently supports SQL UDFs only.

#### Settings behavior {#udf-settings-behavior}

:::warning Important
UDFs in ClickHouse Cloud **do not inherit user-level settings**. They execute with default system settings.
:::

This means:
- Session-level settings (set via `SET` statement) are not propagated to UDF execution context
- User profile settings are not inherited by UDFs
- Query-level settings do not apply within UDF execution

### Experimental features {#experimental-features}

Experimental features are disabled in ClickHouse Cloud services to ensure the stability of service deployments.
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