Find Documents in MongoDB whose with an array field is a subset of a query array

Question

Suppose I have a insert a set of documents each with an array field. I would like to find all documents such that their array field is a subset of

Answer 1

In MongoDb, for array field:

"$in:[...]" means "intersection" or "any element in",
"$all:[...]" means "subset" or "contain",
"$elemMatch:{...}" means "any element match"
"$not:{$elemMatch:{$nin:[...]}}" means "superset" or "in"