[0] https://sqlite.org/src/file/ext/misc/fileio.c, it allows you to read a directory recursively in the cli (`select * from fsdir("./");`)
Edit: It allows upwards traversals (`select * from fsdir("../../../../etc/passwd");`), so beware
I'm sticking with the Python bundled sqlite3 though so I'm not in a good place to take advantage of that one.