# groonga - An open-source fulltext search engine and column store.

- 日本語

# 7.15. Window function

New in version 6.0.3.

Window function can be used in select and logical_select. See Window function related parameters for details.

This section describes window function and built-in window functions.

TODO: Add documentations about window function.

- 7.15.1. `record_number`
- 7.15.2. `window_count`
- 7.15.3. `window_record_number`
- 7.15.4. `window_sum`