Recently, I've had a number of cases caused by customers getting themselves tangled up in Smart List filter logic, so I thought I would do a blog post on how AND/OR logic works in Marketo.
It's not surprising that people would be confused, because "and" and "or" are used differently in English than they are in filter logic. For instance, if I say "Don't go to the liquor store or the casino," I mean that I don't want you to go to the liquor and I don't want you to go to the casino. I want you to stay away from both of them or you will be in trouble. However, if I say that to Marketo, the OR logic works like this
IF Not Went to Liquor Store = True (whether or not you went to the casino), THEN Not in trouble
- OR -
IF Not Went to Casino = True (whether or not you went to the liquor store), THEN Not in trouble
AND logic works differently in English as well. If I say "People who do yoga and people who lift weights are physically fit," I mean that people who do either activity are physically fit. However, Smart List logic interprets AND this way
IF Does Yoga = True AND Lifts Weights = True, THEN Physically Fit.
With the AND logic, only people who do both yoga and weight-lifting are physically fit.
So, counter-intuitive as it may sound, in Smart List logic, we use AND to exclude people, and we use OR to include people. To illustrate this, let's pretend I want to start a club. The traits I want in my club members are
If I use AND logic (also known as ALL logic), then the only people who can join my club are people who are women AND have red hair AND green eyes.
Since there aren't that many red-haired, green-eyed women, my club is pretty exclusive.
But let's say that I want more people in my club, so I change my logic from AND/ALL to OR/ANY. Now my membership includes
With ANY/OR logic, my club has a lot more people in it.
Maybe that's too many people. AND/ALL logic gave me too few people, OR/ANY logic gave me too many. Advanced logic gives me the ability come down somewhere in between. In this case, let's make the club ladies only. Since I want to exclude the guys (sorry guys!) I am going to use AND logic with the gender requirement, but since I want flexibility on hair and eye color, I will use OR logic there.
My filters would be
#1 - Gender is Female
#2 - Hair Color is Red
#3 - Eye Color is Green
and my advanced logic would be: 1 AND (2 OR 3). My resulting club members are all women who have either red hair or green eyes, or both.
I use OR to include women based on hair and eye color, but I use AND logic to exclude people whose gender is not female.
So if you are working on a Smart List and it seems to be pulling in too many leads, check the OR logic you are using. If you don't have enough leads, check the AND logic, and adjust accordingly.
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