September 2014
Beginner to intermediate
544 pages
14h 45m
English
Content preview from Sams Teach Yourself NoSQL with MongoDB in 24 Hours
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Hour 9. Utilizing the Power of Grouping, Aggregation, and Map Reduce
What You’ll Learn in This Hour:
Grouping documents based on a field value
Creating an aggregation pipeline
Using aggregation pipelines to manipulate the results
Building map reduce operations with reduce and finalize functions
Using map reduce to reduce a set of documents into ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.