github.com/scraniel/migrate@v0.0.0-20230320185700-339088f36cee/database/mongodb/examples/migrations/004_replace_field_value_from_another_field.up.json (about)

     1  [
     2      {
     3          "aggregate": "users",
     4          "pipeline": [
     5              {
     6                  "$project": {
     7                      "_id": 1,
     8                      "firstname": 1,
     9                      "lastname": 1,
    10                      "username": 1,
    11                      "password": 1,
    12                      "email": 1,
    13                      "active": 1,
    14                      "fullname": { "$concat": ["$firstname", " ", "$lastname"] }
    15                  }
    16              },
    17              {
    18                  "$out": "users"
    19              }
    20          ],
    21          "cursor": {}
    22      }
    23  ]