# Page Not Found

The URL `release-notes/mariadb-connector-r2dbc/1-2-2` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Error 1202: Could not create slave thread; check system resources](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-1200-to-1299/e1202.md)
- [Error 1212: Incorrect table definition; all MERGE tables must be in the same database](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-1200-to-1299/e1212.md)
- [Error 1222: The used SELECT statements have a different number of columns](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-1200-to-1299/e1222.md)
- [Error 1232: Incorrect argument type to variable](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-1200-to-1299/e1232.md)
- [Error 1242: Subquery returns more than 1 row](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-1200-to-1299/e1242.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-1200-to-1299/e1202.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://mariadb.com/docs/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://mariadb.com/docs/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/docs/server/reference/error-codes/mariadb-error-codes-1200-to-1299/e1202.md`).

You may also use `Accept: text/markdown` header for content negotiation.