June 2017
Beginner to intermediate
404 pages
8h 22m
English
Content preview from Learning Elasticsearch
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Sample data
Similar to the previous chapters, we will use examples to explain aggregations better. In this chapter, we are going to use aggregations that are useful to an e-commerce site. Our data will be about the products in an e-commerce site.
In the product mapping, we will use type keyword for fields we want to run aggregations on. Keywords are better for running aggregation, sorting and can advantage of doc values. We will discuss doc values further in sections below.
First, let's set the mapping for the chapter8 index:
#Delete existing index DELETE chapter8 #Chapter 8 Mappings PUT chapter8 { "settings": {}, "mappings": { "product": { "properties": { "product_name": { "type": "text" }, "manufacturer" : { "type": "keyword" }, "category" ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.