How do I do a “NOT IN” query in Mongo?

Question

This is my document:

{ 
    title:\"Happy thanksgiving\",
    body: \"come over for dinner\",
    blocked:[
       {user:333, name:\'john\'},
       {user:99         


        

Answer 1

You can use $in or $nin for "not in"

Example ...

> db.people.find({ crowd : { $nin: ["cool"] }});

I put a bunch more examples here: http://learnmongo.com/posts/being-part-of-the-in-crowd/