Is there a way to generate mass rows of dummy data in a table for testing in workbench?
If not, are there any free tools out there that is able to do that?
You can do this quickly with SQL if the actual data inserted doesn't matter. Create your table and insert one record manually. If the table has a unique/primary key then remove this for the moment.
Then do a
Once you have enough rows and you want your primary/unique key back run an update over the table, setting the key column to some unique value and then add the primary/unique key back.