Inherited from Serializable
Inherited from Serializable
Inherited from Product
Inherited from Equals
Inherited from AnyRef
Inherited from Any
Inherited by implicit conversion any2stringadd from
Group to any2stringadd[Group]
Inherited by implicit conversion StringFormat from
Group to StringFormat[Group]
Inherited by implicit conversion Ensuring from
Group to Ensuring[Group]
Inherited by implicit conversion ArrowAssoc from
Group to ArrowAssoc[Group]
Groups documents together to calulate aggregates on document collections. This command aggregates on arbitrary identifiers. Document fields identifier must be prefixed with
$
. http://docs.mongodb.org/manual/reference/aggregation/group/#_S_groupany BSON value acceptable by mongodb as identifier
the sequence of operators specifying aggregate calculation