Using Parlour with custom sql query execution before Sqoop export/import...

....
When we call this function, have we checked that the user has set the table variable?

If not, can we ensure we return an error here that helps our users understand what they need to do?

If we have already checked that the user has set the table name, I have a small preference for changing this method so that it takes the table name as a parameter (in other words, the method takes options and "evidence" that the options contains this particular tablename), but it's up to you.