# chDB SQL

> In-process ClickHouse SQL. Not DataStore pandas. No server

**Subcategory:** ClickHouse  
**License:** Apache-2.0  
**Source:** https://github.com/ClickHouse/agent-skills/blob/main/skills/chdb-sql/SKILL.md

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## When it is useful

Run ClickHouse SQL in-process via chdb.query() / Session on local files, S3, Postgres, MySQL, Iceberg, Delta with no server. Not pandas DataStore chaining (chdb-datastore) and not ClickHouse server admin (infra-clickhouse).

## The Catch

Embedded SQL, not pandas DataStore. OSS/chDB 0 USD. Cloud is trial plus 300 USD credits, not hobby. Distinct from chdb-datastore and from infra-clickhouse. HOLD troubleshooting/best-practices/architecture-advisor.