Is there a way to get Sqlx::Column (or Sqlx::Row) from an empty query?

[KrullBorg]

For example, i want to print columns names of a table, that can be empty: so i cannot use Query::fetch* because don't return a Sqlx::Row but error or None; so i cannot use Row::columns().

Is there a way to do what i want to do?

Thanks in advance