Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{"key":1,"create_date":"2022-12-12"},{"key":2,"create_date":"2022-12-13"}]
Query
db.collection.update({},[{"$set":{"createdate":{"$toDate":"$create_date"}}}],{multi:true})
Result