[ryanschneider]

Even cooler, let's say you need to "update" a subset of your parquet files after they are written. Once you have your parquet files in a ducklake, you can "virtually" update them (the files themselves aren't touched, just new ones created). Something like:

- create your frozen ducklake

- run whatever "normal" mutation query you want to run (DELETE, UPDATE, MERGE INTO)

- use `ducklake_rewrite_data_files` to make new files w/ mutations applied, then optionally run `ducklake_merge_adjacent_files` to compact the files as well (though this might cause all files to change).

- call `ducklake_list_files` to get the new set of active files.

- update your upstream "source of truth" with this new list, optionally deleting any files no longer referenced.

The net result should be that any files "touched" by your updates will have new updated versions alongside them, while any that were unchanged should just be returned in the list files operation as is.