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# 7.16. Window function

Added 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.

- 7.16.1. `record_number`
- 7.16.2. `window_count`
- 7.16.3. `window_rank`
- 7.16.4. `window_record_number`
- 7.16.5. `window_sum`