Aggregation
$group
The $group aggregation stage processes documents in a pipeline.
$group
The $group aggregation stage processes documents in a pipeline.
Syntax
{ $group: { ... } }Example
{ $group: { field: 1 } }The $group aggregation stage processes documents in a pipeline.
The $group aggregation stage processes documents in a pipeline.
{ $group: { ... } }{ $group: { field: 1 } }