SortByCount class
$sortByCount
Stage description
Groups incoming documents based on the value of a specified expression, then computes the count of documents in each distinct group.
Each output document contains two fields: an _id field containing the distinct grouping value, and a count field containing the number of documents belonging to that grouping or category.
The documents are sorted by count in descending order.
https://docs.mongodb.com/manual/reference/operator/aggregation/sortByCount/
- Inheritance
-
- Object
- AggregationStage
- SortByCount
Constructors
- SortByCount(dynamic expression)
-
Creates
$sortByCountaggregation stage
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
build(
) → Map< String, Object> -
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited