BigQuery Mate is a companion tool for Google BigQuery UI that adds extra functionality to enhance the user experience. Developed by Mikhail Berlyant, this free Chrome extension is designed to provide additional features to the Native BigQuery UI.

One of the most popular features of BigQuery Mate is the cost estimation tool, which allows users to estimate the monetary cost based on processed bytes. This can be helpful in managing and optimizing costs when working with large datasets. The extension also offers support for BigQuery Named Parameters, making it easier to work with parameterized queries and saved queries.

Other features include the ability to control the size of the navigation panel, hide/show the navigation panel to save screen real estate, and filter datasets for easier navigation and locating specific datasets. Users can also take advantage of keyboard shortcuts for navigating between pages and switching between Legacy and Standard SQL versions.

BigQuery Mate continues to evolve based on user feedback and demand, with new features added in each release. While some features may occasionally be affected by updates to the Google BigQuery UI, the developer is committed to promptly addressing any issues that arise.

Overall, BigQuery Mate is a valuable extension for users of Google BigQuery UI, providing enhanced functionality and improving the user experience.