Make reference for all ducklake functions #226
Description
Overall I've found the ducklake documentation very helpful, but I'm having a hard time finding and remembering functions. Besides that, it seems that the function parameters and returned table schemas are not always documented.
It would be nice to have a reference page (or collection of pages) to look up all functions in one place. Something with a repeated structure, like:
## <Function_name>
<Description and link to relevant guide page>
<Example>
<Params table>
<Return table>
The ducklake extension page on the DuckDB site is already a good start, but it seems to be missing functions (e.g. ducklake_cleanup_old_files() or ducklake.set_commit_message() ). Others do not have documented paramters; for example, the merge_adjacent_files() function on the DuckDB page has no mention of dry_run or others.
Some functions also require passing the catalog as an argument, others have the ducklake name as a prefix. Maybe this is obvious for some, but I would appreciate a more explicit description of the syntax.