Nope, you don't need any of these things. Abandon all worry; invite the opportunity. You are ready.
JMP makes finding unique values in your columns quite easy by using the Recode option. The Recode dialog displays a list of all of the unique values for any number of columns that you have selected.

You can also make changes to any of the values. This is useful when making corrections, including new variables for a comparative analysis, or creating test variables that can be used to further investigate.
Watch this short video on how to view and update unique values (1:09) to review a use of the Recode option.
Today, I'm going to tour you through finding unique values in the columns of your data set. You might be thinking that since JMP handles such massive data, then this is going to be a real journey. "
Oh, no! I'm going to need emotional preparation, extreme physical conditioning, and perhaps a dedicated moment to call in steadfastness and perseverance."