Articles → MONGODB → $Subtract Operator In The Aggregate Framework Of Mongodb
$Subtract Operator In The Aggregate Framework Of Mongodb
Purpose
Example
db.sales.aggregate([
{
$project: {
_id: 1,
date: 1,
amount: 1,
discount: 1,
effectiveAmount: { $subtract: [ "$amount", "$discount" ] }
}
}
])
Output