New Seed paramater for rand() visual recipe formula function

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User Story

As a data analyst who is using the rand() function in a formulas step in a visual recipe, it would be great if there were a third and optional paramater of a rand() function for a seed number that would cause the randomization to always occur in the same way.  This would allow me to determine when I want to keep the randomization the same and when I need it to be different.

Condition of Satisfaction

  • The new seed paramater should be an optional paramater to the function that could be set from a project variable for example ${My_Rand_Seed} .  If the seed is missing the current behavior of a different seed for each run would be applied.