How to use $in or $nin in mongo aggregation $group $cond

Question

I want to achieve $sum with $cond by having $or on property:

db.collectionName.aggregate(
{
   \"$group\": {
     \"_id\":\'$created_at\',
     \"count\": {\"$su         


        

Answer 1

First you should create a list of $id using $map in project and then use setIsSubset in group as below :

db.collectionName.aggregate([{
  "$project": {
    "idsArray": {
      "$map": {
        "input": ["A"],
        "as": "el",
        "in": {
          "$cond": [{
              "$eq": ["$$el", "A"]
            }, "$id",
            null
          ]
        }
      }
    }
  }
}, {
  "$group": {
    "_id": "$created_at",
    "count": {
      "$sum": 1
    },
    "count_failure": {
      "$sum": {
        "$cond": [{
            "$setIsSubset": ["$idsArray", [
              0,
              100,
              101,
              102,
              103,
              104,
              105
            ]]
          },
          1,
          0
        ]
      }
    }
  }
}])