How to randomly segment your database ?

[Anonymous]

Dear Marketo users,

I have a 90 000 people database, and I simply want to randomly segment it in three parts.
I have been able to isolate 33% using the "random" fonction, but I do not know how to isolate the rest of my database.
I tried using some kind of "present in total database" and "absent in the 33" but it does not seem to work ....

Does anyone know ? (I am using smart lists)

Thank you in advance,
Hugo

[Anonymous]

Yes, if you do as the instructions in the article point out then the same person should not be in more than one list.

[Anonymous]

Thank you for yout answer Cathal, can I be sure creating the 3 lists that Marketo will not take the same people randomly ? Does it automatically isolate those who already have randomly selected and put in a list ?

[Anonymous]

You could create 3 static lists.
Then create a cmart campaign.
Smart List:  all inclusive smart list like last name is not empty.
Flow.

Add to list 
Random sample 33% to list A
Random sample 33% to list B
Random sample 34% to list C

https://community.marketo.com/MarketoArticle?id=kA050000000L6EBCA0