Aggregate documents where objects in array matches multiple conditions

Question

I have a collection with documents similar to such:

{
    \"_id\": ObjectId(\"xxxxx\"),
    \"item\": [
        { \"         


        

Answer 1

You can use the below query with $elemMatch to match the array's both values.

Something like

db.collection_name.aggregate({
  "$match": {
    "item": {
      "$elemMatch": {
        "property.0": "attr1",
        "property.1": /^\+/
      }
    }
  }
});

Also, you can use $all operator if you don't want to reference array index.

db.collection_name.aggregate({
  "$match": {
    "item": {
      "$elemMatch": {
        "property": {
          "$all": [
            "attr1",
            /^\+/
          ]
        }
      }
    }
  }
});