MongoDB order of operators -

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i trying find movies which:

  • contains "comedy" , "crime" in "genres".
  • "comedy" listed first

i know query such:

.find({ "genres": ["comedy", "crime"] })

however, cannot grasp why following doesn't work:

.find({    "genres.0": "comedy",   "genres": { $size: 2 },   "genres": { $all: ["comedy", "crime"] } }

as result, entries such as:

["comedy", "crime", "drama"]

but why?

you have genres twice in find-object, means second entry overwrites first. when have 2 conditions same field, either need use $and operator or combine them this: "genres": { $size:2, $all: ["comedy", "crime"] }


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