Hello Team,
The example provided in the documentation for db.collection.updateOne with aggregation pipeline appears to have an explanation that may be unclear or incorrect.
Documentation Page : https://www.mongodb.com/docs/manual/reference/method/db.collection.updateOne/#example-1
In query commentsSemester1 and commentsSemester2 fields are used to create commend array but
explaination provided for first Stage is like below:
creates a new array field comments whose elements are the current content of the misc1 and misc2 fields.
But in query, there no use of misc1 and misc2 field.
Additionally in query result , missing field status for document with _id : 1