Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{"emp_email":"collection@test.com"}]
Query
db.collection.aggregate([{"$project":{"validEmail":{"$eq":[{"$arrayElemAt":[{"$split":["$emp_email","@"]},-1]},"test.com"]}}}])
Result