Function overload_function

src/api.rs:400–407

(db: *mut sqlite3, func_name: &str, n_args: i32)

    unsafe { sqlite3ext_context_db_handle(context) }
}
pub fn overload_function(db: *mut sqlite3, func_name: &str, n_args: i32) -> crate::Result<()> {
    let cname = CString::new(func_name)?;
    let result = unsafe { sqlite3ext_overload_function(db, cname.as_ptr(), n_args) };
    if result != SQLITE_OKAY {
        return Err(Error::new_message("TODO"));
    }
    Ok(())
}
/// A columns "affinity". <https://www.sqlite.org/datatype3.html#type_affinity>
/* TODO maybe include extra affinities?
- JSON - parse as text, see if it's JSON, if so then set subtype