Redgate SQL Data Generator -> Reviewing sqlgen project -> What does "Same as mapped data" mean?

I am reviewing a coworkers sqlgen job and I am unable to figure out what this means in the table generation settings.

Specify number of rows by: "Same as mapped data"

My coworker has this selected on each table, I just need to know what is meant by this I have looked through documentation and been unable to find a definition for this.

I am on version 2 at the moment. Probably not the best question but I need an answer and he is gone for a long period of time and our data is not working correctly with this tool.

Solution

The "Same as mapped data" option is only available when you're using an existing table or view as a data source - it just means that the generator will insert all the rows from the source table or view. The other options are:

Numeric value - a set number of rows
Proportion of table - a proportion of the source table/view
Generation time - as much data as the tool can generate in a set time

There's a little more about using an existing table/view as a data source here on the website, but it doesn't have much else useful in it.