Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{"createdAt":ISODate("2021-08-01")}]
Query
db.collection.aggregate([{"$addFields":{"monday":{$dateFromParts:{"isoWeekYear":{$year:"$createdAt"},"isoWeek":{$isoWeek:"$createdAt"},"isoDayOfWeek":1}}}}])
Result