pub unsafe extern "C" fn sqlite3_exec(
db: *mut sqlite3,
sql: *const c_char,
callback: Option<unsafe extern "C" fn(*mut c_void, c_int, *mut *mut c_char, *mut *mut c_char) -> c_int>,
arg: *mut c_void,
errmsg: *mut *mut c_char,
) -> c_int