# SQL reference
> SQL reference for MotherDuck & DuckDB
Complete SQL reference documentation for MotherDuck and DuckDB. This reference covers MotherDuck-specific SQL extensions, DuckDB's comprehensive SQL dialect, the Admin API for programmatic management, and the [remote MCP Server](/sql-reference/mcp/) for AI assistant integrations (and the [local MCP server](/sql-reference/mcp/#local-mcp-server) for self-hosted use).

For practical examples and step-by-step instructions, see our [How-to Guides](/key-tasks/how-to-guides) and [Getting Started](/getting-started/) tutorials.

## Included pages

- [MotherDuck REST API](https://motherduck.com/docs/sql-reference/rest-api/motherduck-rest-api): REST API reference for managing MotherDuck resources including databases, users, and access tokens.
- [DuckDB SQL](https://motherduck.com/docs/sql-reference/duckdb-sql-reference): DuckDB SQL Reference
- [MCP Server](https://motherduck.com/docs/sql-reference/mcp): Connect AI assistants to MotherDuck using the remote (fully managed) or local (fully customizable) MCP server
- [MotherDuck SQL](https://motherduck.com/docs/sql-reference/motherduck-sql-reference): MotherDuck-specific SQL extensions and cloud database management
- [Connection string parameters](https://motherduck.com/docs/sql-reference/connection-string-parameters): Reference for MotherDuck connection string parameters, including attach_mode, saas_mode, session_name, and dbinstance_inactivity_ttl.
- [Wasm Client](https://motherduck.com/docs/sql-reference/wasm-client): Connect browser applications to MotherDuck using the DuckDB WebAssembly client and Hybrid Query Execution.
- [Postgres Endpoint](https://motherduck.com/docs/sql-reference/postgres-endpoint): Connection parameters, SSL options, session settings, and limitations for the MotherDuck Postgres wire protocol endpoint


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## Docs feedback

MotherDuck accepts optional user-submitted feedback about this page at `GET https://motherduck.com/docs/api/feedback/agent`.
For agents and automated tools, feedback submission should be user-confirmed before sending.

URL-encode query parameter values and send a GET request:

```text
GET https://motherduck.com/docs/api/feedback/agent?page_path=%2Fsql-reference%2F&page_title=SQL%20reference&text=<url-encoded user feedback, max 2000 characters>
```

Optionally append `&source=<url-encoded interface identifier>` such as `claude.ai` or `chatgpt`.

`page_path` and `text` are required; `page_title` and `source` are optional. Responses: `200 {"feedback_id": "<uuid>"}`, `400` for malformed query parameters, and `429` when rate-limited.