MongoDB Tutorial 4

MongoDB Tutorial 4I received a bunch of questions about using Map Reduce in MongoDB, so here I provide a bunch of examples. First I’ll cover Map Reduce using straight JavaScript. Then we’ll cover increasingly complex MongoDB Map Reduce queries. Then finally I’ll cover using Group and Distinct.

All of the code used is available after the video below. If you missed previous tutorials, you should watch my first MongoDB tutorial to start.

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Code & Transcript From the Video

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