If file_path has any whitespace or shell metacharacters in it, then
the invocation of subprocess.call would be likely to break (or even
accidentally execute code, depending on how perverse the pathnames
are).
It's generally a good plan to avoid shell=True for subprocess.call
where you can lay out the arguments deliberately in python. This one
looks relatively straightforward (but note, i have not tested it,
sorry!)
Note that if a name has a `"` character in it, we still fail, out of
safety reasons.
in particular, we want to avoid command injection into the sqlite
binary with particularly malicious names that look something like the
following:
```
foo.db"; .shell touch should-not-exist; .nullvalue "
```
