Posts tagged:

aggregation framework

Operations in the New Aggregation Framework

Jan 17 • Posted 2 years ago

Available in 2.1 development release. Will be stable for production in the 2.2 release

Built by Chris Westin (@cwestin63)

MongoDB has built-in MapReduce functionality that can be used for complex analytics tasks. However, we’ve found that most of the time, users need the kind of group-by functionality that SQL implementations have. This can be implemented using map/reduce, but doing so is more work than it was in SQL. In version 2.1, MongoDB is introducing a new aggregation framework that will make it much easier to obtain the kind of results SQL group-by is used for, without having to write custom JavaScript.

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